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Treatments for Early HS Range From Topical Therapies to Laser Hair Removal
This can be challenging because to date, no Food and Drug Administration–approved treatments exist for early-stage HS and only two biologics exist for moderate to severe disease.
“For someone with occasional nodules and abscesses, we often use antibiotics and topical antiseptics,” Christopher Sayed, MD, a dermatologist at the HS and Follicular Disorders Clinic at the University of North Carolina, Chapel Hill, told this news organization. “We may use these daily for weeks or months or just provide them to use for 1-2 weeks at a time for intermittent flares if a patient doesn’t want to take a pill every day,” he said. “For women, hormonal options like oral contraceptive pills and spironolactone can be a great option” if they don’t mind taking a daily pill.
Topical options that Jennifer L. Hsiao, MD, reaches for in her role as director of the HS clinic at the University of Southern California, Los Angeles, include chlorhexidine wash, topical clindamycin, and topical resorcinol. Systemic medications include oral antibiotics such as doxycycline or clindamycin, while hormonal options include oral contraceptives and/or spironolactone for women and finasteride for men.
Laser hair removal for both men and women can also help treat lesions and abscesses in the groin and axillae, since reducing hair follicles tends to result in fewer follicles that become inflamed and form nodules and abscesses over time, “but it requires multiple visits and not all patients have access to it,” Dr. Sayed said. “Once patients start to develop tunnels or scars or fail to respond to some of these other treatments, I am quick to open the conversation on biologics to help avoid progression and long-term need for surgery.”
Metformin Among Options to Consider
According to Dr. Hsiao, other treatment options to consider trying in patients with mild HS include metformin, “especially in patients who also have prediabetes, PCOS, or obesity;” isotretinoin if the patient has concomitant severe acne; botulinum toxin injections; apremilast or topical roflumilast, and antihyperhidrosis medications such as prescription aluminum chloride topicals, glycopyrronium wipes, and glycopyrrolate.
Recommending lifestyle modifications such as smoking cessation and weight loss for patients diagnosed with early-stage HS is “challenging,” Dr. Sayed said, “because the evidence on different triggers and lifestyle modifications isn’t very strong. There can also be a lot of stigmas around weight and smoking in HS, and it can alienate patients to go straight to these topics in the first visit.”
Many patients also ask what dietary changes they can make to improve their HS. “The most common things patients tend to bring up are dairy avoidance and reducing carbohydrates,” he said. “Supplements like zinc and turmeric are also frequently brought up by patients and some find them helpful. Once rapport is built, I may discuss smoking cessation as potentially helping prevent as much activity over time or weight loss as possibly helping improve response to treatments, but I don’t promise that these things always help since modifying them doesn’t always lead to improvement.”
Dr. Hsiao noted that existing research suggests that following a Mediterranean diet may benefit HS symptoms.
Early Data on Ruxolitinib Cream Promising
At the 2024 annual meeting of the American Academy of Dermatology, researchers reported on the results of a phase 2 study, which found that topical 1.5% ruxolitinib, a Janus kinase (JAK) inhibitor (currently FDA-approved for atopic dermatitis) was effective in reducing abscess and inflammatory nodule count in patients with mild HS. “There is a major need for this kind of option, and the early results are promising,” said Dr. Sayed, who was not involved with the study. “It’s very difficult to get this covered for patients currently since it is off label for HS. We’ve gotten it for a few patients, and one has really liked it, but it’s unclear how consistent the others were with their use, and their level of improvement was not clear to me.”
For mild HS, he added, “the most important area in which we’ve seen growing evidence is around hair removal lasers such as Nd:YAG and alexandrite lasers. Improving access for patients is a major priority in the coming years.”
According to Dr. Hsiao, other approaches being studied for treating mild HS include a topical aryl hydrocarbon receptor agonist known as AT193, and oral medications, such as phosphodiesterase-4 inhibitors. Laser therapies are also being studied, “such as fractional ablative CO2 laser therapy combined with topical triamcinolone,” she said. “However, the majority of ongoing HS trials are for moderate to severe disease, so there is certainly a need for more investigation into mild HS treatment approaches.”
Dr. Sayed disclosed that he is secretary of the HS Foundation and a member of the European HS Foundation. He has served as a consultant for AbbVie, Alumis, AstraZeneca, Incyte, InflaRx, Novartis, Sanofi, Sonoma Biotherapeutics, and UCB; as a speaker for AbbVie, Novartis, and UCB; and as an investigator for Chemocentryx, Incyte, InflaRx, Novartis, and UCB. Dr. Hsiao disclosed that she is a member of the board of directors for the HS Foundation and has served as a consultant for AbbVie, Aclaris, Boehringer Ingelheim, Incyte, Novartis, and UCB; as a speaker for AbbVie, Novartis, Sanofi Regeneron, and UCB; and as an investigator for Amgen, Boehringer Ingelheim, and Incyte.
A version of this article first appeared on Medscape.com.
This can be challenging because to date, no Food and Drug Administration–approved treatments exist for early-stage HS and only two biologics exist for moderate to severe disease.
“For someone with occasional nodules and abscesses, we often use antibiotics and topical antiseptics,” Christopher Sayed, MD, a dermatologist at the HS and Follicular Disorders Clinic at the University of North Carolina, Chapel Hill, told this news organization. “We may use these daily for weeks or months or just provide them to use for 1-2 weeks at a time for intermittent flares if a patient doesn’t want to take a pill every day,” he said. “For women, hormonal options like oral contraceptive pills and spironolactone can be a great option” if they don’t mind taking a daily pill.
Topical options that Jennifer L. Hsiao, MD, reaches for in her role as director of the HS clinic at the University of Southern California, Los Angeles, include chlorhexidine wash, topical clindamycin, and topical resorcinol. Systemic medications include oral antibiotics such as doxycycline or clindamycin, while hormonal options include oral contraceptives and/or spironolactone for women and finasteride for men.
Laser hair removal for both men and women can also help treat lesions and abscesses in the groin and axillae, since reducing hair follicles tends to result in fewer follicles that become inflamed and form nodules and abscesses over time, “but it requires multiple visits and not all patients have access to it,” Dr. Sayed said. “Once patients start to develop tunnels or scars or fail to respond to some of these other treatments, I am quick to open the conversation on biologics to help avoid progression and long-term need for surgery.”
Metformin Among Options to Consider
According to Dr. Hsiao, other treatment options to consider trying in patients with mild HS include metformin, “especially in patients who also have prediabetes, PCOS, or obesity;” isotretinoin if the patient has concomitant severe acne; botulinum toxin injections; apremilast or topical roflumilast, and antihyperhidrosis medications such as prescription aluminum chloride topicals, glycopyrronium wipes, and glycopyrrolate.
Recommending lifestyle modifications such as smoking cessation and weight loss for patients diagnosed with early-stage HS is “challenging,” Dr. Sayed said, “because the evidence on different triggers and lifestyle modifications isn’t very strong. There can also be a lot of stigmas around weight and smoking in HS, and it can alienate patients to go straight to these topics in the first visit.”
Many patients also ask what dietary changes they can make to improve their HS. “The most common things patients tend to bring up are dairy avoidance and reducing carbohydrates,” he said. “Supplements like zinc and turmeric are also frequently brought up by patients and some find them helpful. Once rapport is built, I may discuss smoking cessation as potentially helping prevent as much activity over time or weight loss as possibly helping improve response to treatments, but I don’t promise that these things always help since modifying them doesn’t always lead to improvement.”
Dr. Hsiao noted that existing research suggests that following a Mediterranean diet may benefit HS symptoms.
Early Data on Ruxolitinib Cream Promising
At the 2024 annual meeting of the American Academy of Dermatology, researchers reported on the results of a phase 2 study, which found that topical 1.5% ruxolitinib, a Janus kinase (JAK) inhibitor (currently FDA-approved for atopic dermatitis) was effective in reducing abscess and inflammatory nodule count in patients with mild HS. “There is a major need for this kind of option, and the early results are promising,” said Dr. Sayed, who was not involved with the study. “It’s very difficult to get this covered for patients currently since it is off label for HS. We’ve gotten it for a few patients, and one has really liked it, but it’s unclear how consistent the others were with their use, and their level of improvement was not clear to me.”
For mild HS, he added, “the most important area in which we’ve seen growing evidence is around hair removal lasers such as Nd:YAG and alexandrite lasers. Improving access for patients is a major priority in the coming years.”
According to Dr. Hsiao, other approaches being studied for treating mild HS include a topical aryl hydrocarbon receptor agonist known as AT193, and oral medications, such as phosphodiesterase-4 inhibitors. Laser therapies are also being studied, “such as fractional ablative CO2 laser therapy combined with topical triamcinolone,” she said. “However, the majority of ongoing HS trials are for moderate to severe disease, so there is certainly a need for more investigation into mild HS treatment approaches.”
Dr. Sayed disclosed that he is secretary of the HS Foundation and a member of the European HS Foundation. He has served as a consultant for AbbVie, Alumis, AstraZeneca, Incyte, InflaRx, Novartis, Sanofi, Sonoma Biotherapeutics, and UCB; as a speaker for AbbVie, Novartis, and UCB; and as an investigator for Chemocentryx, Incyte, InflaRx, Novartis, and UCB. Dr. Hsiao disclosed that she is a member of the board of directors for the HS Foundation and has served as a consultant for AbbVie, Aclaris, Boehringer Ingelheim, Incyte, Novartis, and UCB; as a speaker for AbbVie, Novartis, Sanofi Regeneron, and UCB; and as an investigator for Amgen, Boehringer Ingelheim, and Incyte.
A version of this article first appeared on Medscape.com.
This can be challenging because to date, no Food and Drug Administration–approved treatments exist for early-stage HS and only two biologics exist for moderate to severe disease.
“For someone with occasional nodules and abscesses, we often use antibiotics and topical antiseptics,” Christopher Sayed, MD, a dermatologist at the HS and Follicular Disorders Clinic at the University of North Carolina, Chapel Hill, told this news organization. “We may use these daily for weeks or months or just provide them to use for 1-2 weeks at a time for intermittent flares if a patient doesn’t want to take a pill every day,” he said. “For women, hormonal options like oral contraceptive pills and spironolactone can be a great option” if they don’t mind taking a daily pill.
Topical options that Jennifer L. Hsiao, MD, reaches for in her role as director of the HS clinic at the University of Southern California, Los Angeles, include chlorhexidine wash, topical clindamycin, and topical resorcinol. Systemic medications include oral antibiotics such as doxycycline or clindamycin, while hormonal options include oral contraceptives and/or spironolactone for women and finasteride for men.
Laser hair removal for both men and women can also help treat lesions and abscesses in the groin and axillae, since reducing hair follicles tends to result in fewer follicles that become inflamed and form nodules and abscesses over time, “but it requires multiple visits and not all patients have access to it,” Dr. Sayed said. “Once patients start to develop tunnels or scars or fail to respond to some of these other treatments, I am quick to open the conversation on biologics to help avoid progression and long-term need for surgery.”
Metformin Among Options to Consider
According to Dr. Hsiao, other treatment options to consider trying in patients with mild HS include metformin, “especially in patients who also have prediabetes, PCOS, or obesity;” isotretinoin if the patient has concomitant severe acne; botulinum toxin injections; apremilast or topical roflumilast, and antihyperhidrosis medications such as prescription aluminum chloride topicals, glycopyrronium wipes, and glycopyrrolate.
Recommending lifestyle modifications such as smoking cessation and weight loss for patients diagnosed with early-stage HS is “challenging,” Dr. Sayed said, “because the evidence on different triggers and lifestyle modifications isn’t very strong. There can also be a lot of stigmas around weight and smoking in HS, and it can alienate patients to go straight to these topics in the first visit.”
Many patients also ask what dietary changes they can make to improve their HS. “The most common things patients tend to bring up are dairy avoidance and reducing carbohydrates,” he said. “Supplements like zinc and turmeric are also frequently brought up by patients and some find them helpful. Once rapport is built, I may discuss smoking cessation as potentially helping prevent as much activity over time or weight loss as possibly helping improve response to treatments, but I don’t promise that these things always help since modifying them doesn’t always lead to improvement.”
Dr. Hsiao noted that existing research suggests that following a Mediterranean diet may benefit HS symptoms.
Early Data on Ruxolitinib Cream Promising
At the 2024 annual meeting of the American Academy of Dermatology, researchers reported on the results of a phase 2 study, which found that topical 1.5% ruxolitinib, a Janus kinase (JAK) inhibitor (currently FDA-approved for atopic dermatitis) was effective in reducing abscess and inflammatory nodule count in patients with mild HS. “There is a major need for this kind of option, and the early results are promising,” said Dr. Sayed, who was not involved with the study. “It’s very difficult to get this covered for patients currently since it is off label for HS. We’ve gotten it for a few patients, and one has really liked it, but it’s unclear how consistent the others were with their use, and their level of improvement was not clear to me.”
For mild HS, he added, “the most important area in which we’ve seen growing evidence is around hair removal lasers such as Nd:YAG and alexandrite lasers. Improving access for patients is a major priority in the coming years.”
According to Dr. Hsiao, other approaches being studied for treating mild HS include a topical aryl hydrocarbon receptor agonist known as AT193, and oral medications, such as phosphodiesterase-4 inhibitors. Laser therapies are also being studied, “such as fractional ablative CO2 laser therapy combined with topical triamcinolone,” she said. “However, the majority of ongoing HS trials are for moderate to severe disease, so there is certainly a need for more investigation into mild HS treatment approaches.”
Dr. Sayed disclosed that he is secretary of the HS Foundation and a member of the European HS Foundation. He has served as a consultant for AbbVie, Alumis, AstraZeneca, Incyte, InflaRx, Novartis, Sanofi, Sonoma Biotherapeutics, and UCB; as a speaker for AbbVie, Novartis, and UCB; and as an investigator for Chemocentryx, Incyte, InflaRx, Novartis, and UCB. Dr. Hsiao disclosed that she is a member of the board of directors for the HS Foundation and has served as a consultant for AbbVie, Aclaris, Boehringer Ingelheim, Incyte, Novartis, and UCB; as a speaker for AbbVie, Novartis, Sanofi Regeneron, and UCB; and as an investigator for Amgen, Boehringer Ingelheim, and Incyte.
A version of this article first appeared on Medscape.com.
Diagnosing Mild Hidradenitis Suppurativa: Early Stage Can Mimic Other Diseases
, such as an infection, folliculitis, and acne.
According to 2019 guidelines from the United States and Canadian hidradenitis suppurativa foundations, the diagnostic criteria for HS in general are the presence of typical lesions such as abscesses, nodules, and tunnels in classic locations such as underarms, groins, and buttocks that recur over the course of at least 6 months. “There is no need for additional testing or imaging to make the diagnosis,” said Dr. Sayed, co-chair of the 2019 guidelines work group, who sees patients at the HS and Follicular Disorders Clinic at the University of North Carolina, Chapel Hill. “In many ways, the diagnosis should be very simple since the presentation is classic in most cases, though it can be confusing in the first 6 months or so.”
Persistence, Recurrence Major Clues
Prior to being diagnosed with Hurley stage I HS — characterized by recurrent nodules and abscesses with minimal scars, according to the guidelines — most people figure they’ve been getting recurrent Staphylococcus aureus infections or are having trouble with ingrown hairs from shaving, he continued. They may also say they get “boils” without an understanding of what has been causing them.
“Early HS can mimic an intense folliculitis or furuncles that can sometimes be caused by Staphylococcus infections, but the history of persistence or recurrence for months, despite treatment that should cover something like a Staph infection is a major clue,” Dr. Sayed said. “Thanks to improved resources on the internet, more patients, compared to several years ago, come in asking about HS after they’ve done their own research. As public awareness improves, hopefully this trend will grow, and patients will be diagnosed and treated earlier.” Family history is also a strong predictor of HS, since about half of patients have first-degree relatives who have a history of HS, he noted.
Clinicians can use the Hurley staging system to characterize the extent of disease and the Dermatology Life Quality Index to measure the impact of HS on quality of life. “We perform these assessments in our specialty clinic at each visit, but they are not necessary for diagnosis,” Dr. Sayed told this news organization.
The ‘2-2-6 Rule’
When she sees a patient who might have HS, Jennifer L. Hsiao, MD, a dermatologist who directs the HS clinic at the University of Southern California, Los Angeles, follows the “2-2-6 rule,” which involves asking patients if they have had 2 episodes of 2 or more abscesses in 6 months. “If the patient answers yes, there’s a high likelihood that person has HS,” she said.
Hurley stage I HS is defined as nodules and abscesses without sinus tracts (tunnels) or scarring. But in Dr. Hsiao’s opinion, the Hurley staging system “is not the best way to characterize disease activity” because some patients meet criteria for Hurley stage I disease, meaning they do not have any scars or sinus tracts/tunnels, “but they have high disease activity with several inflammatory nodules and large painful abscesses that are limiting their quality of life and ability to function.”
Most cases of early-stage HS can be diagnosed in a single clinic visit, but some patients may present with a limited history of disease. For example, they may report having only had one episode of an axillary abscess or one episode of a few folliculitis-like papules in the groin. “In the absence of other physical exam findings suggestive of HS, such as open or double-headed comedones in flexural regions, I tell the patient that it is too early to call their condition HS, and I recommend that if they have another episode to call the office for an appointment for evaluation,” Dr. Hsiao said in an interview.
“What sets HS apart from an isolated incidence of a Staphylococcus aureus furuncle is the history of recurrence,” she added. To better characterize HS disease severity, she uses the six-point HS Physician Global Assessment score, a scale from 0 to 5, which classifies a patient as having moderate HS if they have five or more inflammatory nodules, or one abscess and one or more inflammatory nodule(s), without the requirement of demonstrating a scar or tunnel on a physical exam.
To help guide management decisions, Dr. Hsiao also considers asking patients with early-stage HS the following questions:
- Do you have a primary care provider (PCP)? PCPs are important care partners for patients with HS doctor to help screen for the comorbidities associated with the condition.
- What seems to make your HS worse? This can help identify potential triggers to avoid.
- What other medical conditions do you have?
- How would you describe the impact HS has on your quality of life?
- For women: Does your HS get worse around your period? “This can help to identify a potential hormonal trigger,” she said. “If the patient answers ‘yes,’ I would strongly consider a combined oral contraceptive pill and/or spironolactone as part of the patient’s treatment regimen.”
‘Window of Opportunity’ to Intervene
According to Dr. Hsiao, there has been a paradigm shift in the approach to HS management that emphasizes a “window of opportunity,” where earlier initiation of appropriate long-term immunomodulator therapy is recommended to try to mitigate disease progression. The development of tunnels and scars is a telltale sign that permanent tissue destruction is occurring, and the patient’s HS is no longer mild.
Ideally, a conversation about adalimumab, a tumor necrosis factor inhibitor, and secukinumab, an interleukin-17A antagonist (the two currently Food and Drug Administration–approved medications for HS, for moderate to severe disease/Hurley stage II/III) will have already been started with patients prior to development of a high tunnel or scar burden, signs of later-stage disease.
“Medications like this have the potential to slow and prevent that progression and reduce the surgical burden patients face over time, which is a major priority,” Dr. Sayed said. He noted that while comfort level with managing HS can vary among clinicians, “I’d encourage dermatologists to stay engaged with these patients because our training in the medical and surgical management of complex diseases like this is unmatched among other specialties,” he said. “Education of colleagues in other specialties should also be a big priority, especially for those in urgent care, emergency medicine, surgery, and ob.gyn. who often encounter these patients and may be less familiar” with HS.
Besides the North American clinical management guidelines for HS, which are expected to be updated in the next 18-24 months, as well as comorbidity screening recommendations for HS published in 2022, another resource Dr. Sayed and Dr. Hsiao recommend is the HS Foundation website, which features a link to Continuing Medical Education video lectures. The foundation also hosts an annual Symposium on HS Advances. This year’s event is scheduled in November in Austin, Texas.
Dr. Sayed disclosed that he is secretary of the HS Foundation and a member of the European HS Foundation. He has served as a consultant for AbbVie, Alumis, AstraZeneca, Incyte, InflaRx, Novartis, Sanofi, Sonoma Biotherapeutics, and UCB; as a speaker for AbbVie, Novartis, and UCB; and as an investigator for Chemocentryx, Incyte, InflaRx, Novartis, and UCB. Dr. Hsiao disclosed that she is a member of the board of directors for the HS Foundation and has served as a consultant for AbbVie, Aclaris, Boehringer Ingelheim, Incyte, Novartis, and UCB; as a speaker for AbbVie, Novartis, Sanofi Regeneron, and UCB; and as an investigator for Amgen, Boehringer Ingelheim, and Incyte.
A version of this article first appeared on Medscape.com.
, such as an infection, folliculitis, and acne.
According to 2019 guidelines from the United States and Canadian hidradenitis suppurativa foundations, the diagnostic criteria for HS in general are the presence of typical lesions such as abscesses, nodules, and tunnels in classic locations such as underarms, groins, and buttocks that recur over the course of at least 6 months. “There is no need for additional testing or imaging to make the diagnosis,” said Dr. Sayed, co-chair of the 2019 guidelines work group, who sees patients at the HS and Follicular Disorders Clinic at the University of North Carolina, Chapel Hill. “In many ways, the diagnosis should be very simple since the presentation is classic in most cases, though it can be confusing in the first 6 months or so.”
Persistence, Recurrence Major Clues
Prior to being diagnosed with Hurley stage I HS — characterized by recurrent nodules and abscesses with minimal scars, according to the guidelines — most people figure they’ve been getting recurrent Staphylococcus aureus infections or are having trouble with ingrown hairs from shaving, he continued. They may also say they get “boils” without an understanding of what has been causing them.
“Early HS can mimic an intense folliculitis or furuncles that can sometimes be caused by Staphylococcus infections, but the history of persistence or recurrence for months, despite treatment that should cover something like a Staph infection is a major clue,” Dr. Sayed said. “Thanks to improved resources on the internet, more patients, compared to several years ago, come in asking about HS after they’ve done their own research. As public awareness improves, hopefully this trend will grow, and patients will be diagnosed and treated earlier.” Family history is also a strong predictor of HS, since about half of patients have first-degree relatives who have a history of HS, he noted.
Clinicians can use the Hurley staging system to characterize the extent of disease and the Dermatology Life Quality Index to measure the impact of HS on quality of life. “We perform these assessments in our specialty clinic at each visit, but they are not necessary for diagnosis,” Dr. Sayed told this news organization.
The ‘2-2-6 Rule’
When she sees a patient who might have HS, Jennifer L. Hsiao, MD, a dermatologist who directs the HS clinic at the University of Southern California, Los Angeles, follows the “2-2-6 rule,” which involves asking patients if they have had 2 episodes of 2 or more abscesses in 6 months. “If the patient answers yes, there’s a high likelihood that person has HS,” she said.
Hurley stage I HS is defined as nodules and abscesses without sinus tracts (tunnels) or scarring. But in Dr. Hsiao’s opinion, the Hurley staging system “is not the best way to characterize disease activity” because some patients meet criteria for Hurley stage I disease, meaning they do not have any scars or sinus tracts/tunnels, “but they have high disease activity with several inflammatory nodules and large painful abscesses that are limiting their quality of life and ability to function.”
Most cases of early-stage HS can be diagnosed in a single clinic visit, but some patients may present with a limited history of disease. For example, they may report having only had one episode of an axillary abscess or one episode of a few folliculitis-like papules in the groin. “In the absence of other physical exam findings suggestive of HS, such as open or double-headed comedones in flexural regions, I tell the patient that it is too early to call their condition HS, and I recommend that if they have another episode to call the office for an appointment for evaluation,” Dr. Hsiao said in an interview.
“What sets HS apart from an isolated incidence of a Staphylococcus aureus furuncle is the history of recurrence,” she added. To better characterize HS disease severity, she uses the six-point HS Physician Global Assessment score, a scale from 0 to 5, which classifies a patient as having moderate HS if they have five or more inflammatory nodules, or one abscess and one or more inflammatory nodule(s), without the requirement of demonstrating a scar or tunnel on a physical exam.
To help guide management decisions, Dr. Hsiao also considers asking patients with early-stage HS the following questions:
- Do you have a primary care provider (PCP)? PCPs are important care partners for patients with HS doctor to help screen for the comorbidities associated with the condition.
- What seems to make your HS worse? This can help identify potential triggers to avoid.
- What other medical conditions do you have?
- How would you describe the impact HS has on your quality of life?
- For women: Does your HS get worse around your period? “This can help to identify a potential hormonal trigger,” she said. “If the patient answers ‘yes,’ I would strongly consider a combined oral contraceptive pill and/or spironolactone as part of the patient’s treatment regimen.”
‘Window of Opportunity’ to Intervene
According to Dr. Hsiao, there has been a paradigm shift in the approach to HS management that emphasizes a “window of opportunity,” where earlier initiation of appropriate long-term immunomodulator therapy is recommended to try to mitigate disease progression. The development of tunnels and scars is a telltale sign that permanent tissue destruction is occurring, and the patient’s HS is no longer mild.
Ideally, a conversation about adalimumab, a tumor necrosis factor inhibitor, and secukinumab, an interleukin-17A antagonist (the two currently Food and Drug Administration–approved medications for HS, for moderate to severe disease/Hurley stage II/III) will have already been started with patients prior to development of a high tunnel or scar burden, signs of later-stage disease.
“Medications like this have the potential to slow and prevent that progression and reduce the surgical burden patients face over time, which is a major priority,” Dr. Sayed said. He noted that while comfort level with managing HS can vary among clinicians, “I’d encourage dermatologists to stay engaged with these patients because our training in the medical and surgical management of complex diseases like this is unmatched among other specialties,” he said. “Education of colleagues in other specialties should also be a big priority, especially for those in urgent care, emergency medicine, surgery, and ob.gyn. who often encounter these patients and may be less familiar” with HS.
Besides the North American clinical management guidelines for HS, which are expected to be updated in the next 18-24 months, as well as comorbidity screening recommendations for HS published in 2022, another resource Dr. Sayed and Dr. Hsiao recommend is the HS Foundation website, which features a link to Continuing Medical Education video lectures. The foundation also hosts an annual Symposium on HS Advances. This year’s event is scheduled in November in Austin, Texas.
Dr. Sayed disclosed that he is secretary of the HS Foundation and a member of the European HS Foundation. He has served as a consultant for AbbVie, Alumis, AstraZeneca, Incyte, InflaRx, Novartis, Sanofi, Sonoma Biotherapeutics, and UCB; as a speaker for AbbVie, Novartis, and UCB; and as an investigator for Chemocentryx, Incyte, InflaRx, Novartis, and UCB. Dr. Hsiao disclosed that she is a member of the board of directors for the HS Foundation and has served as a consultant for AbbVie, Aclaris, Boehringer Ingelheim, Incyte, Novartis, and UCB; as a speaker for AbbVie, Novartis, Sanofi Regeneron, and UCB; and as an investigator for Amgen, Boehringer Ingelheim, and Incyte.
A version of this article first appeared on Medscape.com.
, such as an infection, folliculitis, and acne.
According to 2019 guidelines from the United States and Canadian hidradenitis suppurativa foundations, the diagnostic criteria for HS in general are the presence of typical lesions such as abscesses, nodules, and tunnels in classic locations such as underarms, groins, and buttocks that recur over the course of at least 6 months. “There is no need for additional testing or imaging to make the diagnosis,” said Dr. Sayed, co-chair of the 2019 guidelines work group, who sees patients at the HS and Follicular Disorders Clinic at the University of North Carolina, Chapel Hill. “In many ways, the diagnosis should be very simple since the presentation is classic in most cases, though it can be confusing in the first 6 months or so.”
Persistence, Recurrence Major Clues
Prior to being diagnosed with Hurley stage I HS — characterized by recurrent nodules and abscesses with minimal scars, according to the guidelines — most people figure they’ve been getting recurrent Staphylococcus aureus infections or are having trouble with ingrown hairs from shaving, he continued. They may also say they get “boils” without an understanding of what has been causing them.
“Early HS can mimic an intense folliculitis or furuncles that can sometimes be caused by Staphylococcus infections, but the history of persistence or recurrence for months, despite treatment that should cover something like a Staph infection is a major clue,” Dr. Sayed said. “Thanks to improved resources on the internet, more patients, compared to several years ago, come in asking about HS after they’ve done their own research. As public awareness improves, hopefully this trend will grow, and patients will be diagnosed and treated earlier.” Family history is also a strong predictor of HS, since about half of patients have first-degree relatives who have a history of HS, he noted.
Clinicians can use the Hurley staging system to characterize the extent of disease and the Dermatology Life Quality Index to measure the impact of HS on quality of life. “We perform these assessments in our specialty clinic at each visit, but they are not necessary for diagnosis,” Dr. Sayed told this news organization.
The ‘2-2-6 Rule’
When she sees a patient who might have HS, Jennifer L. Hsiao, MD, a dermatologist who directs the HS clinic at the University of Southern California, Los Angeles, follows the “2-2-6 rule,” which involves asking patients if they have had 2 episodes of 2 or more abscesses in 6 months. “If the patient answers yes, there’s a high likelihood that person has HS,” she said.
Hurley stage I HS is defined as nodules and abscesses without sinus tracts (tunnels) or scarring. But in Dr. Hsiao’s opinion, the Hurley staging system “is not the best way to characterize disease activity” because some patients meet criteria for Hurley stage I disease, meaning they do not have any scars or sinus tracts/tunnels, “but they have high disease activity with several inflammatory nodules and large painful abscesses that are limiting their quality of life and ability to function.”
Most cases of early-stage HS can be diagnosed in a single clinic visit, but some patients may present with a limited history of disease. For example, they may report having only had one episode of an axillary abscess or one episode of a few folliculitis-like papules in the groin. “In the absence of other physical exam findings suggestive of HS, such as open or double-headed comedones in flexural regions, I tell the patient that it is too early to call their condition HS, and I recommend that if they have another episode to call the office for an appointment for evaluation,” Dr. Hsiao said in an interview.
“What sets HS apart from an isolated incidence of a Staphylococcus aureus furuncle is the history of recurrence,” she added. To better characterize HS disease severity, she uses the six-point HS Physician Global Assessment score, a scale from 0 to 5, which classifies a patient as having moderate HS if they have five or more inflammatory nodules, or one abscess and one or more inflammatory nodule(s), without the requirement of demonstrating a scar or tunnel on a physical exam.
To help guide management decisions, Dr. Hsiao also considers asking patients with early-stage HS the following questions:
- Do you have a primary care provider (PCP)? PCPs are important care partners for patients with HS doctor to help screen for the comorbidities associated with the condition.
- What seems to make your HS worse? This can help identify potential triggers to avoid.
- What other medical conditions do you have?
- How would you describe the impact HS has on your quality of life?
- For women: Does your HS get worse around your period? “This can help to identify a potential hormonal trigger,” she said. “If the patient answers ‘yes,’ I would strongly consider a combined oral contraceptive pill and/or spironolactone as part of the patient’s treatment regimen.”
‘Window of Opportunity’ to Intervene
According to Dr. Hsiao, there has been a paradigm shift in the approach to HS management that emphasizes a “window of opportunity,” where earlier initiation of appropriate long-term immunomodulator therapy is recommended to try to mitigate disease progression. The development of tunnels and scars is a telltale sign that permanent tissue destruction is occurring, and the patient’s HS is no longer mild.
Ideally, a conversation about adalimumab, a tumor necrosis factor inhibitor, and secukinumab, an interleukin-17A antagonist (the two currently Food and Drug Administration–approved medications for HS, for moderate to severe disease/Hurley stage II/III) will have already been started with patients prior to development of a high tunnel or scar burden, signs of later-stage disease.
“Medications like this have the potential to slow and prevent that progression and reduce the surgical burden patients face over time, which is a major priority,” Dr. Sayed said. He noted that while comfort level with managing HS can vary among clinicians, “I’d encourage dermatologists to stay engaged with these patients because our training in the medical and surgical management of complex diseases like this is unmatched among other specialties,” he said. “Education of colleagues in other specialties should also be a big priority, especially for those in urgent care, emergency medicine, surgery, and ob.gyn. who often encounter these patients and may be less familiar” with HS.
Besides the North American clinical management guidelines for HS, which are expected to be updated in the next 18-24 months, as well as comorbidity screening recommendations for HS published in 2022, another resource Dr. Sayed and Dr. Hsiao recommend is the HS Foundation website, which features a link to Continuing Medical Education video lectures. The foundation also hosts an annual Symposium on HS Advances. This year’s event is scheduled in November in Austin, Texas.
Dr. Sayed disclosed that he is secretary of the HS Foundation and a member of the European HS Foundation. He has served as a consultant for AbbVie, Alumis, AstraZeneca, Incyte, InflaRx, Novartis, Sanofi, Sonoma Biotherapeutics, and UCB; as a speaker for AbbVie, Novartis, and UCB; and as an investigator for Chemocentryx, Incyte, InflaRx, Novartis, and UCB. Dr. Hsiao disclosed that she is a member of the board of directors for the HS Foundation and has served as a consultant for AbbVie, Aclaris, Boehringer Ingelheim, Incyte, Novartis, and UCB; as a speaker for AbbVie, Novartis, Sanofi Regeneron, and UCB; and as an investigator for Amgen, Boehringer Ingelheim, and Incyte.
A version of this article first appeared on Medscape.com.
The Lure of Specialty Medicine Pulls Nurse Practitioners From Primary Care
For many patients, seeing a nurse practitioner has become a routine part of primary care, in which these “NPs” often perform the same tasks that patients have relied on doctors for.
But NPs in specialty care? That’s not routine, at least not yet. Increasingly, though, nurse practitioners and physician assistants are joining cardiology, dermatology, and other specialty practices, broadening their skills and increasing their income.
This development worries some people who track the health workforce, because current trends suggest primary care, which has counted on nurse practitioners to backstop physician shortages, soon might not be able to rely on them to the same extent.
“They’re succumbing to the same challenges that we have with physicians,” said Atul Grover, MD, PhD, executive director of the Research and Action Institute at the Association of American Medical Colleges. The rates NPs can command in a specialty practice “are quite a bit higher” than practice salaries in primary care, he said.
When nurse practitioner programs began to proliferate in the 1970s, “at first it looked great, producing all these nurse practitioners that go to work with primary care physicians,” said Yalda Jabbarpour, MD, director of the American Academy of Family Physicians’ Robert Graham Center for Policy Studies. “But now only 30% are going into primary care.”
Dr. Jabbarpour was referring to the 2024 primary care scorecard by the Milbank Memorial Fund, which found that from 2016 to 2021 the proportion of nurse practitioners who worked in primary care practices hovered between 32% and 34%, even though their numbers grew rapidly. The proportion of physician assistants, also known as physician associates, in primary care ranged from 27% to 30%, the study found.
Both nurse practitioners and physician assistants are advanced practice clinicians who, in addition to graduate degrees, must complete distinct education, training, and certification steps. NPs can practice without a doctor’s supervision in more than two dozen states, while PAs have similar independence in only a handful of states.
About 88% of nurse practitioners are certified in an area of primary care, according to the American Association of Nurse Practitioners. But it is difficult to track exactly how many work in primary care or in specialty practices. Unlike physicians, they’re generally not required to be endorsed by a national standard-setting body to practice in specialties like oncology or cardiology, for example. The AANP declined to answer questions about its annual workforce survey or the extent to which primary care NPs are moving toward specialties.
Though data tracking the change is sparse, specialty practices are adding these advanced practice clinicians at almost the same rate as primary care practices, according to frequently cited research published in 2018.
The clearest evidence of the shift: From 2008 to 2016, there was a 22% increase in the number of specialty practices that employed nurse practitioners and physician assistants, according to that study. The increase in the number of primary care practices that employed these professionals was 24%.
Once more, the most recent projections by the Association of American Medical Colleges predict a dearth of at least 20,200 primary care physicians by 2036. There will also be a shortfall of non-primary care specialists, including a deficiency of at least 10,100 surgical physicians and up to 25,000 physicians in other specialties.
When it comes to the actual work performed, the lines between primary and specialty care are often blurred, said Candice Chen, MD, MPH, associate professor of health policy and management at George Washington University.
“You might be a nurse practitioner working in a gastroenterology clinic or cardiology clinic, but the scope of what you do is starting to overlap with primary care,” she said.
Nurse practitioners’ salaries vary widely by location, type of facility, and experience. Still, according to data from health care recruiter AMN Healthcare Physician Solutions, formerly known as Merritt Hawkins, the total annual average starting compensation, including signing bonus, for nurse practitioners and physician assistants in specialty practice was $172,544 in the year that ended March 31, slightly higher than the $166,544 for those in primary care.
According to forecasts from the federal Bureau of Labor Statistics, nurse practitioner jobs will increase faster than jobs in almost any other occupation in the decade leading up to 2032, growing by 123,600 jobs or 45%. (Wind turbine service technician is the only other occupation projected to grow as fast.) The growth rate for physician assistants is also much faster than average, at 27%. There are more than twice as many nurse practitioners as physician assistants, however: 323,900 versus 148,000, in 2022.
To Dr. Grover of the AAMC, numbers like this signal that there will probably be enough NPs, PAs, and physicians to meet primary care needs. At the same time, “expect more NPs and PAs to also flow out into other specialties,” he said.
When Pamela Ograbisz started working as a registered nurse 27 years ago, she worked in a cardiothoracic intensive care unit. After she became a family nurse practitioner a few years later, she found a job with a similar specialty practice, which trained her to take on a bigger role, first running their outpatient clinic, then working on the floor, and later in the intensive care unit.
If nurse practitioners want to specialize, often “the doctors mentor them just like they would with a physician residency,” said Ms. Ograbisz, now vice president of clinical operations at temporary placement recruiter LocumTenens.com.
If physician assistants want to specialize, they also can do so through mentoring, or they can receive “certificates of added qualifications” in 10 specialties to demonstrate their expertise. Most employers don’t “encourage or require” these certificates, however, said Jennifer Orozco, DMSc, PA-C, DFAAPA, chief medical officer at the American Academy of Physician Associates.
There are a number of training programs for family nurse practitioners who want to develop skills in other areas.
Raina Hoebelheinrich, 40, a family nurse practitioner at a regional medical center in Yankton, South Dakota, recently enrolled in a three-semester post-master’s endocrinology training program at Mount Marty University. She lives on a farm in nearby northeastern Nebraska with her husband and five sons.
Ms. Hoebelheinrich’s new skills could be helpful in her current hospital job, in which she sees a lot of patients with acute diabetes, or in a clinic setting like the one in Sioux Falls, South Dakota, where she is doing her clinical endocrinology training.
Lack of access to endocrinology care in rural areas is a real problem, and many people may travel hundreds of miles to see a specialist.
“There aren’t a lot of options,” she said.
A version of this article first appeared on Medscape.com.
For many patients, seeing a nurse practitioner has become a routine part of primary care, in which these “NPs” often perform the same tasks that patients have relied on doctors for.
But NPs in specialty care? That’s not routine, at least not yet. Increasingly, though, nurse practitioners and physician assistants are joining cardiology, dermatology, and other specialty practices, broadening their skills and increasing their income.
This development worries some people who track the health workforce, because current trends suggest primary care, which has counted on nurse practitioners to backstop physician shortages, soon might not be able to rely on them to the same extent.
“They’re succumbing to the same challenges that we have with physicians,” said Atul Grover, MD, PhD, executive director of the Research and Action Institute at the Association of American Medical Colleges. The rates NPs can command in a specialty practice “are quite a bit higher” than practice salaries in primary care, he said.
When nurse practitioner programs began to proliferate in the 1970s, “at first it looked great, producing all these nurse practitioners that go to work with primary care physicians,” said Yalda Jabbarpour, MD, director of the American Academy of Family Physicians’ Robert Graham Center for Policy Studies. “But now only 30% are going into primary care.”
Dr. Jabbarpour was referring to the 2024 primary care scorecard by the Milbank Memorial Fund, which found that from 2016 to 2021 the proportion of nurse practitioners who worked in primary care practices hovered between 32% and 34%, even though their numbers grew rapidly. The proportion of physician assistants, also known as physician associates, in primary care ranged from 27% to 30%, the study found.
Both nurse practitioners and physician assistants are advanced practice clinicians who, in addition to graduate degrees, must complete distinct education, training, and certification steps. NPs can practice without a doctor’s supervision in more than two dozen states, while PAs have similar independence in only a handful of states.
About 88% of nurse practitioners are certified in an area of primary care, according to the American Association of Nurse Practitioners. But it is difficult to track exactly how many work in primary care or in specialty practices. Unlike physicians, they’re generally not required to be endorsed by a national standard-setting body to practice in specialties like oncology or cardiology, for example. The AANP declined to answer questions about its annual workforce survey or the extent to which primary care NPs are moving toward specialties.
Though data tracking the change is sparse, specialty practices are adding these advanced practice clinicians at almost the same rate as primary care practices, according to frequently cited research published in 2018.
The clearest evidence of the shift: From 2008 to 2016, there was a 22% increase in the number of specialty practices that employed nurse practitioners and physician assistants, according to that study. The increase in the number of primary care practices that employed these professionals was 24%.
Once more, the most recent projections by the Association of American Medical Colleges predict a dearth of at least 20,200 primary care physicians by 2036. There will also be a shortfall of non-primary care specialists, including a deficiency of at least 10,100 surgical physicians and up to 25,000 physicians in other specialties.
When it comes to the actual work performed, the lines between primary and specialty care are often blurred, said Candice Chen, MD, MPH, associate professor of health policy and management at George Washington University.
“You might be a nurse practitioner working in a gastroenterology clinic or cardiology clinic, but the scope of what you do is starting to overlap with primary care,” she said.
Nurse practitioners’ salaries vary widely by location, type of facility, and experience. Still, according to data from health care recruiter AMN Healthcare Physician Solutions, formerly known as Merritt Hawkins, the total annual average starting compensation, including signing bonus, for nurse practitioners and physician assistants in specialty practice was $172,544 in the year that ended March 31, slightly higher than the $166,544 for those in primary care.
According to forecasts from the federal Bureau of Labor Statistics, nurse practitioner jobs will increase faster than jobs in almost any other occupation in the decade leading up to 2032, growing by 123,600 jobs or 45%. (Wind turbine service technician is the only other occupation projected to grow as fast.) The growth rate for physician assistants is also much faster than average, at 27%. There are more than twice as many nurse practitioners as physician assistants, however: 323,900 versus 148,000, in 2022.
To Dr. Grover of the AAMC, numbers like this signal that there will probably be enough NPs, PAs, and physicians to meet primary care needs. At the same time, “expect more NPs and PAs to also flow out into other specialties,” he said.
When Pamela Ograbisz started working as a registered nurse 27 years ago, she worked in a cardiothoracic intensive care unit. After she became a family nurse practitioner a few years later, she found a job with a similar specialty practice, which trained her to take on a bigger role, first running their outpatient clinic, then working on the floor, and later in the intensive care unit.
If nurse practitioners want to specialize, often “the doctors mentor them just like they would with a physician residency,” said Ms. Ograbisz, now vice president of clinical operations at temporary placement recruiter LocumTenens.com.
If physician assistants want to specialize, they also can do so through mentoring, or they can receive “certificates of added qualifications” in 10 specialties to demonstrate their expertise. Most employers don’t “encourage or require” these certificates, however, said Jennifer Orozco, DMSc, PA-C, DFAAPA, chief medical officer at the American Academy of Physician Associates.
There are a number of training programs for family nurse practitioners who want to develop skills in other areas.
Raina Hoebelheinrich, 40, a family nurse practitioner at a regional medical center in Yankton, South Dakota, recently enrolled in a three-semester post-master’s endocrinology training program at Mount Marty University. She lives on a farm in nearby northeastern Nebraska with her husband and five sons.
Ms. Hoebelheinrich’s new skills could be helpful in her current hospital job, in which she sees a lot of patients with acute diabetes, or in a clinic setting like the one in Sioux Falls, South Dakota, where she is doing her clinical endocrinology training.
Lack of access to endocrinology care in rural areas is a real problem, and many people may travel hundreds of miles to see a specialist.
“There aren’t a lot of options,” she said.
A version of this article first appeared on Medscape.com.
For many patients, seeing a nurse practitioner has become a routine part of primary care, in which these “NPs” often perform the same tasks that patients have relied on doctors for.
But NPs in specialty care? That’s not routine, at least not yet. Increasingly, though, nurse practitioners and physician assistants are joining cardiology, dermatology, and other specialty practices, broadening their skills and increasing their income.
This development worries some people who track the health workforce, because current trends suggest primary care, which has counted on nurse practitioners to backstop physician shortages, soon might not be able to rely on them to the same extent.
“They’re succumbing to the same challenges that we have with physicians,” said Atul Grover, MD, PhD, executive director of the Research and Action Institute at the Association of American Medical Colleges. The rates NPs can command in a specialty practice “are quite a bit higher” than practice salaries in primary care, he said.
When nurse practitioner programs began to proliferate in the 1970s, “at first it looked great, producing all these nurse practitioners that go to work with primary care physicians,” said Yalda Jabbarpour, MD, director of the American Academy of Family Physicians’ Robert Graham Center for Policy Studies. “But now only 30% are going into primary care.”
Dr. Jabbarpour was referring to the 2024 primary care scorecard by the Milbank Memorial Fund, which found that from 2016 to 2021 the proportion of nurse practitioners who worked in primary care practices hovered between 32% and 34%, even though their numbers grew rapidly. The proportion of physician assistants, also known as physician associates, in primary care ranged from 27% to 30%, the study found.
Both nurse practitioners and physician assistants are advanced practice clinicians who, in addition to graduate degrees, must complete distinct education, training, and certification steps. NPs can practice without a doctor’s supervision in more than two dozen states, while PAs have similar independence in only a handful of states.
About 88% of nurse practitioners are certified in an area of primary care, according to the American Association of Nurse Practitioners. But it is difficult to track exactly how many work in primary care or in specialty practices. Unlike physicians, they’re generally not required to be endorsed by a national standard-setting body to practice in specialties like oncology or cardiology, for example. The AANP declined to answer questions about its annual workforce survey or the extent to which primary care NPs are moving toward specialties.
Though data tracking the change is sparse, specialty practices are adding these advanced practice clinicians at almost the same rate as primary care practices, according to frequently cited research published in 2018.
The clearest evidence of the shift: From 2008 to 2016, there was a 22% increase in the number of specialty practices that employed nurse practitioners and physician assistants, according to that study. The increase in the number of primary care practices that employed these professionals was 24%.
Once more, the most recent projections by the Association of American Medical Colleges predict a dearth of at least 20,200 primary care physicians by 2036. There will also be a shortfall of non-primary care specialists, including a deficiency of at least 10,100 surgical physicians and up to 25,000 physicians in other specialties.
When it comes to the actual work performed, the lines between primary and specialty care are often blurred, said Candice Chen, MD, MPH, associate professor of health policy and management at George Washington University.
“You might be a nurse practitioner working in a gastroenterology clinic or cardiology clinic, but the scope of what you do is starting to overlap with primary care,” she said.
Nurse practitioners’ salaries vary widely by location, type of facility, and experience. Still, according to data from health care recruiter AMN Healthcare Physician Solutions, formerly known as Merritt Hawkins, the total annual average starting compensation, including signing bonus, for nurse practitioners and physician assistants in specialty practice was $172,544 in the year that ended March 31, slightly higher than the $166,544 for those in primary care.
According to forecasts from the federal Bureau of Labor Statistics, nurse practitioner jobs will increase faster than jobs in almost any other occupation in the decade leading up to 2032, growing by 123,600 jobs or 45%. (Wind turbine service technician is the only other occupation projected to grow as fast.) The growth rate for physician assistants is also much faster than average, at 27%. There are more than twice as many nurse practitioners as physician assistants, however: 323,900 versus 148,000, in 2022.
To Dr. Grover of the AAMC, numbers like this signal that there will probably be enough NPs, PAs, and physicians to meet primary care needs. At the same time, “expect more NPs and PAs to also flow out into other specialties,” he said.
When Pamela Ograbisz started working as a registered nurse 27 years ago, she worked in a cardiothoracic intensive care unit. After she became a family nurse practitioner a few years later, she found a job with a similar specialty practice, which trained her to take on a bigger role, first running their outpatient clinic, then working on the floor, and later in the intensive care unit.
If nurse practitioners want to specialize, often “the doctors mentor them just like they would with a physician residency,” said Ms. Ograbisz, now vice president of clinical operations at temporary placement recruiter LocumTenens.com.
If physician assistants want to specialize, they also can do so through mentoring, or they can receive “certificates of added qualifications” in 10 specialties to demonstrate their expertise. Most employers don’t “encourage or require” these certificates, however, said Jennifer Orozco, DMSc, PA-C, DFAAPA, chief medical officer at the American Academy of Physician Associates.
There are a number of training programs for family nurse practitioners who want to develop skills in other areas.
Raina Hoebelheinrich, 40, a family nurse practitioner at a regional medical center in Yankton, South Dakota, recently enrolled in a three-semester post-master’s endocrinology training program at Mount Marty University. She lives on a farm in nearby northeastern Nebraska with her husband and five sons.
Ms. Hoebelheinrich’s new skills could be helpful in her current hospital job, in which she sees a lot of patients with acute diabetes, or in a clinic setting like the one in Sioux Falls, South Dakota, where she is doing her clinical endocrinology training.
Lack of access to endocrinology care in rural areas is a real problem, and many people may travel hundreds of miles to see a specialist.
“There aren’t a lot of options,” she said.
A version of this article first appeared on Medscape.com.
Statin Use May Extend Life for Early Breast Cancer Patients
Previous research examining the association between cholesterol and breast cancer metabolism suggests that cholesterol-lowering medications such as statins may improve outcomes in breast cancer patients, Sixten Harborg, a medical student and PhD student at Aarhus University, Denmark, said in a presentation at the European Society for Medical Oncology (ESMO) Breast Cancer annual congress.
In addition, cardiovascular-related death is the second most common cause of death for breast cancer survivors, and given the survival rates in early breast cancer, there is a demand for cardioprotective initiatives and maintenance of cardioprotective drugs after diagnosis, he said in an interview.
What Is Known About Statins and Breast Cancer?
Statins are the most common drugs used to lower cholesterol and may deprive tumor cells of the cholesterol needed for cell membrane synthesis, Mr. Harborg said in his presentation.
Data from a randomized trial published in the Journal of Clinical Oncology in 2017 showed significantly improved disease-free survival, breast cancer–free interval, and distant recurrence–free interval in early stage breast cancer patients randomized to cholesterol-lowering medication vs. those who did not receive cholesterol-lowering medication.
The 2017 study prompted the creation of the MASTER study, a randomized, multicenter, double-blind, placebo-controlled trial comparing standard adjuvant therapy plus placebo to standard adjuvant therapy plus atorvastatin in patients with early breast cancer (NCT04601116), Mr. Harborg said. The MASTER trial is currently recruiting patients in Denmark.
How Was the Current Study Designed?
To provide preliminary analysis, Mr. Harborg and colleagues used an emulation trial design based on electronic health care data from 110,160 females with a diagnosis of stage I, II, or III breast cancer who were part of the Danish Breast Cancer Group, a national clinical registry in Denmark, between 2000 and 2020.
As defined in the European Journal of Epidemiology in 2017, target trial emulation involves application of randomized trial designs to observational data with the goal of improving the quality of observational epidemiology when a comparator trial is not yet available.
The researchers created a cohort of patients based on electronic health care data to simulate a target trial of the use of atorvastatin after breast cancer diagnosis. Patients were randomized to one of two treatment strategies: starting to use statins within 36 months of diagnosis, or not using statins. The primary outcome was death from breast cancer. The follow-up for the MASTER study starts with inclusion and ends with death, emigration from Denmark, end of clinical follow-up, or 10 years of follow-up (whichever comes first); the follow-up was the same in the current study.
The researchers calculated hazard ratios (HR) of breast cancer mortality in statin users vs. non–statin users and used a technique known as inverse-probability of censoring-weighting (IPCW) to estimate the effects of statin use based on prognostic factors.
What Did the Results Show?
The results favored statin use for improved survival in early breast cancer patients, Mr. Harborg said. Overall, the hazard ratio for breast cancer mortality was 0.96 in statin users compared with non–statin users, and was similar in both a Cox regression analysis (HR 0.81), and in a 10-year landmark analysis (HR 0.86).
The difference in mortality between statin and non–statin users was even stronger in patients who were receiving adjuvant chemotherapy (HR 0.94, 0.64, and 0.76 on the IPCW, Cox, and landmark analyses, respectively).
The results were in line with previous reports of statins’ effect on breast cancer survival, Mr. Harborg said in an interview.
“We believe the results encourage the continuous effort of the currently enrolling MASTER trial,” he said.
The results also suggest that deprescribing statins at the time of breast cancer diagnosis is not recommended, and that statin treatment can safely be prescribed to breast cancer patients with increased cardiovascular disease risk and/or dyslipidemia, Mr. Harborg said in the interview.
What Is the Takeaway Message for Clinical Practice?
“The clinical takeaway from our study is that statin use is associated with reduced risk of dying from breast cancer, but that it is not possible to determine the true effect of statins on breast cancer survival without a randomized, placebo-controlled trial,” Mr. Harborg told this publication. “Statins are inexpensive and well-tolerated drugs and may have a beneficial effect in terms of survival for breast cancer patients. However, with the current level of evidence [because the MASTER study is ongoing], we still cannot recommend that oncologists prescribe statins to prevent mortality from breast cancer,” he said.
What Are the Next Steps for Research?
The findings were limited by the study design, and real-world data are needed, Dr. Harborg said. Other limitations include the presence of residual bias, and the use of data based on prescription codes, but these were not considered to have an effect on the main conclusion of the study, Mr. Harborg said in the interview.
However, the results suggest that the addition of statins may improve outcomes for early breast cancer patients, especially when used with chemotherapy, and support the value of the ongoing MASTER study, he concluded.
Ultimately, the MASTER study will provide a more definitive answer to the question of whether statins should be added to the adjuvant treatment regimen of breast cancer to improve breast cancer outcomes, he said.
What Do Clinicians Think of the Study?
The current study is timely and highlights the need for phase 3 trials to examine the potential of statin use for breast cancer outcomes, Malinda T. West, MD, a medical oncologist and breast oncologist at the University of Wisconsin Carbone Cancer Center, Madison, said in an interview.
Questions for future research include whether statins can be used in combination with adjuvant abemaciclib if indicated, or how to best sequence these agents, said Dr. West, who was not involved in the study. Other questions raised by the current study include whether other cholesterol-lowering agents have a potential adjuvant benefit in reducing breast cancer recurrent and/or mortality, and whether the addition of statins would benefit subgroups such as HER2+ and triple negative breast cancer, she said.
“I was not surprised to see another study reporting benefit with statins and reduced risk of breast cancer recurrence and/or mortality, but I think the larger question is defining the subgroups who benefit the most, and identifying predictors for benefit or resistance,” Dr. West said in an interview.
Previous studies have shown that cholesterol elevation, specifically LDL levels, can be linked to increased tumor growth in breast cancer, so the lower mortality risk associated with lipid-lowering therapies in the current study was consistent, Peyton L. Reves, MD, a hematology/oncology fellow, also at the University of Wisconsin, said in an interview. In practice, data from the current study and previous research could be especially useful for patients with elevated LDL levels, said Dr. Reves, who was not involved in the study.
“These results could impact clinical practice in many ways, including leading to routine cholesterol monitoring in breast cancer patients on adjuvant therapy as well as the addition of lipid-lowering therapy with statins in these patients,” Dr. Reves said.
The findings showing particular benefit for patients on adjuvant chemotherapy highlight the need for more research on this specific population and the effect of statins on overall breast cancer mortality, to explore the extent to which the results of the current study were driven by the benefit seen in patients receiving adjuvant chemotherapy, Dr. Reves said.
The study was supported by Director Michael Hermann Nielsen’s Memorial Grant, Manufacturer Einar Willumsen’s Memorial Grant, Astrid Thaysen’s Grant for Medical Basic Research, Eva and Henry Fraenkel’s Memorial Fund, and the Novo Nordisk Foundation.
The researchers had no financial conflicts to disclose. Dr. West and Dr. Reves had no financial conflicts to disclose.
Previous research examining the association between cholesterol and breast cancer metabolism suggests that cholesterol-lowering medications such as statins may improve outcomes in breast cancer patients, Sixten Harborg, a medical student and PhD student at Aarhus University, Denmark, said in a presentation at the European Society for Medical Oncology (ESMO) Breast Cancer annual congress.
In addition, cardiovascular-related death is the second most common cause of death for breast cancer survivors, and given the survival rates in early breast cancer, there is a demand for cardioprotective initiatives and maintenance of cardioprotective drugs after diagnosis, he said in an interview.
What Is Known About Statins and Breast Cancer?
Statins are the most common drugs used to lower cholesterol and may deprive tumor cells of the cholesterol needed for cell membrane synthesis, Mr. Harborg said in his presentation.
Data from a randomized trial published in the Journal of Clinical Oncology in 2017 showed significantly improved disease-free survival, breast cancer–free interval, and distant recurrence–free interval in early stage breast cancer patients randomized to cholesterol-lowering medication vs. those who did not receive cholesterol-lowering medication.
The 2017 study prompted the creation of the MASTER study, a randomized, multicenter, double-blind, placebo-controlled trial comparing standard adjuvant therapy plus placebo to standard adjuvant therapy plus atorvastatin in patients with early breast cancer (NCT04601116), Mr. Harborg said. The MASTER trial is currently recruiting patients in Denmark.
How Was the Current Study Designed?
To provide preliminary analysis, Mr. Harborg and colleagues used an emulation trial design based on electronic health care data from 110,160 females with a diagnosis of stage I, II, or III breast cancer who were part of the Danish Breast Cancer Group, a national clinical registry in Denmark, between 2000 and 2020.
As defined in the European Journal of Epidemiology in 2017, target trial emulation involves application of randomized trial designs to observational data with the goal of improving the quality of observational epidemiology when a comparator trial is not yet available.
The researchers created a cohort of patients based on electronic health care data to simulate a target trial of the use of atorvastatin after breast cancer diagnosis. Patients were randomized to one of two treatment strategies: starting to use statins within 36 months of diagnosis, or not using statins. The primary outcome was death from breast cancer. The follow-up for the MASTER study starts with inclusion and ends with death, emigration from Denmark, end of clinical follow-up, or 10 years of follow-up (whichever comes first); the follow-up was the same in the current study.
The researchers calculated hazard ratios (HR) of breast cancer mortality in statin users vs. non–statin users and used a technique known as inverse-probability of censoring-weighting (IPCW) to estimate the effects of statin use based on prognostic factors.
What Did the Results Show?
The results favored statin use for improved survival in early breast cancer patients, Mr. Harborg said. Overall, the hazard ratio for breast cancer mortality was 0.96 in statin users compared with non–statin users, and was similar in both a Cox regression analysis (HR 0.81), and in a 10-year landmark analysis (HR 0.86).
The difference in mortality between statin and non–statin users was even stronger in patients who were receiving adjuvant chemotherapy (HR 0.94, 0.64, and 0.76 on the IPCW, Cox, and landmark analyses, respectively).
The results were in line with previous reports of statins’ effect on breast cancer survival, Mr. Harborg said in an interview.
“We believe the results encourage the continuous effort of the currently enrolling MASTER trial,” he said.
The results also suggest that deprescribing statins at the time of breast cancer diagnosis is not recommended, and that statin treatment can safely be prescribed to breast cancer patients with increased cardiovascular disease risk and/or dyslipidemia, Mr. Harborg said in the interview.
What Is the Takeaway Message for Clinical Practice?
“The clinical takeaway from our study is that statin use is associated with reduced risk of dying from breast cancer, but that it is not possible to determine the true effect of statins on breast cancer survival without a randomized, placebo-controlled trial,” Mr. Harborg told this publication. “Statins are inexpensive and well-tolerated drugs and may have a beneficial effect in terms of survival for breast cancer patients. However, with the current level of evidence [because the MASTER study is ongoing], we still cannot recommend that oncologists prescribe statins to prevent mortality from breast cancer,” he said.
What Are the Next Steps for Research?
The findings were limited by the study design, and real-world data are needed, Dr. Harborg said. Other limitations include the presence of residual bias, and the use of data based on prescription codes, but these were not considered to have an effect on the main conclusion of the study, Mr. Harborg said in the interview.
However, the results suggest that the addition of statins may improve outcomes for early breast cancer patients, especially when used with chemotherapy, and support the value of the ongoing MASTER study, he concluded.
Ultimately, the MASTER study will provide a more definitive answer to the question of whether statins should be added to the adjuvant treatment regimen of breast cancer to improve breast cancer outcomes, he said.
What Do Clinicians Think of the Study?
The current study is timely and highlights the need for phase 3 trials to examine the potential of statin use for breast cancer outcomes, Malinda T. West, MD, a medical oncologist and breast oncologist at the University of Wisconsin Carbone Cancer Center, Madison, said in an interview.
Questions for future research include whether statins can be used in combination with adjuvant abemaciclib if indicated, or how to best sequence these agents, said Dr. West, who was not involved in the study. Other questions raised by the current study include whether other cholesterol-lowering agents have a potential adjuvant benefit in reducing breast cancer recurrent and/or mortality, and whether the addition of statins would benefit subgroups such as HER2+ and triple negative breast cancer, she said.
“I was not surprised to see another study reporting benefit with statins and reduced risk of breast cancer recurrence and/or mortality, but I think the larger question is defining the subgroups who benefit the most, and identifying predictors for benefit or resistance,” Dr. West said in an interview.
Previous studies have shown that cholesterol elevation, specifically LDL levels, can be linked to increased tumor growth in breast cancer, so the lower mortality risk associated with lipid-lowering therapies in the current study was consistent, Peyton L. Reves, MD, a hematology/oncology fellow, also at the University of Wisconsin, said in an interview. In practice, data from the current study and previous research could be especially useful for patients with elevated LDL levels, said Dr. Reves, who was not involved in the study.
“These results could impact clinical practice in many ways, including leading to routine cholesterol monitoring in breast cancer patients on adjuvant therapy as well as the addition of lipid-lowering therapy with statins in these patients,” Dr. Reves said.
The findings showing particular benefit for patients on adjuvant chemotherapy highlight the need for more research on this specific population and the effect of statins on overall breast cancer mortality, to explore the extent to which the results of the current study were driven by the benefit seen in patients receiving adjuvant chemotherapy, Dr. Reves said.
The study was supported by Director Michael Hermann Nielsen’s Memorial Grant, Manufacturer Einar Willumsen’s Memorial Grant, Astrid Thaysen’s Grant for Medical Basic Research, Eva and Henry Fraenkel’s Memorial Fund, and the Novo Nordisk Foundation.
The researchers had no financial conflicts to disclose. Dr. West and Dr. Reves had no financial conflicts to disclose.
Previous research examining the association between cholesterol and breast cancer metabolism suggests that cholesterol-lowering medications such as statins may improve outcomes in breast cancer patients, Sixten Harborg, a medical student and PhD student at Aarhus University, Denmark, said in a presentation at the European Society for Medical Oncology (ESMO) Breast Cancer annual congress.
In addition, cardiovascular-related death is the second most common cause of death for breast cancer survivors, and given the survival rates in early breast cancer, there is a demand for cardioprotective initiatives and maintenance of cardioprotective drugs after diagnosis, he said in an interview.
What Is Known About Statins and Breast Cancer?
Statins are the most common drugs used to lower cholesterol and may deprive tumor cells of the cholesterol needed for cell membrane synthesis, Mr. Harborg said in his presentation.
Data from a randomized trial published in the Journal of Clinical Oncology in 2017 showed significantly improved disease-free survival, breast cancer–free interval, and distant recurrence–free interval in early stage breast cancer patients randomized to cholesterol-lowering medication vs. those who did not receive cholesterol-lowering medication.
The 2017 study prompted the creation of the MASTER study, a randomized, multicenter, double-blind, placebo-controlled trial comparing standard adjuvant therapy plus placebo to standard adjuvant therapy plus atorvastatin in patients with early breast cancer (NCT04601116), Mr. Harborg said. The MASTER trial is currently recruiting patients in Denmark.
How Was the Current Study Designed?
To provide preliminary analysis, Mr. Harborg and colleagues used an emulation trial design based on electronic health care data from 110,160 females with a diagnosis of stage I, II, or III breast cancer who were part of the Danish Breast Cancer Group, a national clinical registry in Denmark, between 2000 and 2020.
As defined in the European Journal of Epidemiology in 2017, target trial emulation involves application of randomized trial designs to observational data with the goal of improving the quality of observational epidemiology when a comparator trial is not yet available.
The researchers created a cohort of patients based on electronic health care data to simulate a target trial of the use of atorvastatin after breast cancer diagnosis. Patients were randomized to one of two treatment strategies: starting to use statins within 36 months of diagnosis, or not using statins. The primary outcome was death from breast cancer. The follow-up for the MASTER study starts with inclusion and ends with death, emigration from Denmark, end of clinical follow-up, or 10 years of follow-up (whichever comes first); the follow-up was the same in the current study.
The researchers calculated hazard ratios (HR) of breast cancer mortality in statin users vs. non–statin users and used a technique known as inverse-probability of censoring-weighting (IPCW) to estimate the effects of statin use based on prognostic factors.
What Did the Results Show?
The results favored statin use for improved survival in early breast cancer patients, Mr. Harborg said. Overall, the hazard ratio for breast cancer mortality was 0.96 in statin users compared with non–statin users, and was similar in both a Cox regression analysis (HR 0.81), and in a 10-year landmark analysis (HR 0.86).
The difference in mortality between statin and non–statin users was even stronger in patients who were receiving adjuvant chemotherapy (HR 0.94, 0.64, and 0.76 on the IPCW, Cox, and landmark analyses, respectively).
The results were in line with previous reports of statins’ effect on breast cancer survival, Mr. Harborg said in an interview.
“We believe the results encourage the continuous effort of the currently enrolling MASTER trial,” he said.
The results also suggest that deprescribing statins at the time of breast cancer diagnosis is not recommended, and that statin treatment can safely be prescribed to breast cancer patients with increased cardiovascular disease risk and/or dyslipidemia, Mr. Harborg said in the interview.
What Is the Takeaway Message for Clinical Practice?
“The clinical takeaway from our study is that statin use is associated with reduced risk of dying from breast cancer, but that it is not possible to determine the true effect of statins on breast cancer survival without a randomized, placebo-controlled trial,” Mr. Harborg told this publication. “Statins are inexpensive and well-tolerated drugs and may have a beneficial effect in terms of survival for breast cancer patients. However, with the current level of evidence [because the MASTER study is ongoing], we still cannot recommend that oncologists prescribe statins to prevent mortality from breast cancer,” he said.
What Are the Next Steps for Research?
The findings were limited by the study design, and real-world data are needed, Dr. Harborg said. Other limitations include the presence of residual bias, and the use of data based on prescription codes, but these were not considered to have an effect on the main conclusion of the study, Mr. Harborg said in the interview.
However, the results suggest that the addition of statins may improve outcomes for early breast cancer patients, especially when used with chemotherapy, and support the value of the ongoing MASTER study, he concluded.
Ultimately, the MASTER study will provide a more definitive answer to the question of whether statins should be added to the adjuvant treatment regimen of breast cancer to improve breast cancer outcomes, he said.
What Do Clinicians Think of the Study?
The current study is timely and highlights the need for phase 3 trials to examine the potential of statin use for breast cancer outcomes, Malinda T. West, MD, a medical oncologist and breast oncologist at the University of Wisconsin Carbone Cancer Center, Madison, said in an interview.
Questions for future research include whether statins can be used in combination with adjuvant abemaciclib if indicated, or how to best sequence these agents, said Dr. West, who was not involved in the study. Other questions raised by the current study include whether other cholesterol-lowering agents have a potential adjuvant benefit in reducing breast cancer recurrent and/or mortality, and whether the addition of statins would benefit subgroups such as HER2+ and triple negative breast cancer, she said.
“I was not surprised to see another study reporting benefit with statins and reduced risk of breast cancer recurrence and/or mortality, but I think the larger question is defining the subgroups who benefit the most, and identifying predictors for benefit or resistance,” Dr. West said in an interview.
Previous studies have shown that cholesterol elevation, specifically LDL levels, can be linked to increased tumor growth in breast cancer, so the lower mortality risk associated with lipid-lowering therapies in the current study was consistent, Peyton L. Reves, MD, a hematology/oncology fellow, also at the University of Wisconsin, said in an interview. In practice, data from the current study and previous research could be especially useful for patients with elevated LDL levels, said Dr. Reves, who was not involved in the study.
“These results could impact clinical practice in many ways, including leading to routine cholesterol monitoring in breast cancer patients on adjuvant therapy as well as the addition of lipid-lowering therapy with statins in these patients,” Dr. Reves said.
The findings showing particular benefit for patients on adjuvant chemotherapy highlight the need for more research on this specific population and the effect of statins on overall breast cancer mortality, to explore the extent to which the results of the current study were driven by the benefit seen in patients receiving adjuvant chemotherapy, Dr. Reves said.
The study was supported by Director Michael Hermann Nielsen’s Memorial Grant, Manufacturer Einar Willumsen’s Memorial Grant, Astrid Thaysen’s Grant for Medical Basic Research, Eva and Henry Fraenkel’s Memorial Fund, and the Novo Nordisk Foundation.
The researchers had no financial conflicts to disclose. Dr. West and Dr. Reves had no financial conflicts to disclose.
FROM ESMO BREAST CANCER 2024
Follow-Up Outcomes Data Often Missing for FDA Drug Approvals Based on Surrogate Markers
Over the past few decades, the US Food and Drug Administration (FDA) has increasingly relied on surrogate measures such as blood tests instead of clinical outcomes for medication approvals. But critics say the agency lacks consistent standards to ensure the surrogate aligns with clinical outcomes that matter to patients — things like improvements in symptoms and gains in function.
Sometimes those decisions backfire. Consider: In July 2021, the FDA approved aducanumab for the treatment of Alzheimer’s disease, bucking the advice of an advisory panel for the agency that questioned the effectiveness of the medication. Regulators relied on data from the drugmaker, Biogen, showing the monoclonal antibody could reduce levels of amyloid beta plaques in blood — a surrogate marker officials hoped would translate to clinical benefit.
The FDA’s decision triggered significant controversy, and Biogen in January announced it is pulling it from the market this year, citing disappointing sales.
Although the case of aducanumab might seem extreme, given the stakes — Alzheimer’s remains a disease without an effective treatment — it’s far from unusual.
“When we prescribe a drug, there is an underlying assumption that the FDA has done its due diligence to confirm the drug is safe and of benefit,” said Reshma Ramachandran, MD, MPP, MHS, a researcher at Yale School of Medicine, New Haven, Connecticut, and a coauthor of a recent review of surrogate outcomes. “In fact, we found either no evidence or low-quality evidence.” Such markers are associated with clinical outcomes. “We just don’t know if they work meaningfully to treat the patient’s condition. The results were pretty shocking for us,” she said.
The FDA in 2018 released an Adult Surrogate Endpoint Table listing markers that can be used as substitutes for clinical outcomes to more quickly test, review, and approve new therapies. The analysis found the majority of these endpoints lacked subsequent confirmations, defined as published meta-analyses of clinical studies to validate the association between the marker and a clinical outcome important to patients.
In a paper published in JAMA, Dr. Ramachandran and her colleagues looked at 37 surrogate endpoints for nearly 3 dozen nononcologic diseases in the table.
Approval with surrogate markers implies responsibility for postapproval or validation studies — not just lab measures or imaging findings but mortality, morbidity, or improved quality of life, said Joshua D. Wallach, PhD, MS, assistant professor in the department of epidemiology at the Emory Rollins School of Public Health in Atlanta and lead author of the JAMA review.
Dr. Wallach said surrogate markers are easier to measure and do not require large and long trials. But the FDA has not provided clear rules for what makes a surrogate marker valid in clinical trials.
“They’ve said that at a minimum, it requires meta-analytical evidence from studies that have looked at the correlation or the association between the surrogate and the clinical outcome,” Dr. Wallach said. “Our understanding was that if that’s a minimum expectation, we should be able to find those studies in the literature. And the reality is that we were unable to find evidence from those types of studies supporting the association between the surrogate and the clinical outcome.”
Physicians generally do not receive training about the FDA approval process and the difference between biomarkers, surrogate markers, and clinical endpoints, Dr. Ramachandran said. “Our study shows that things are much more uncertain than we thought when it comes to the prescribing of new drugs,” she said.
Surrogate Markers on the Rise
Dr. Wallach’s group looked for published meta-analyses compiling randomized controlled trials reporting surrogate endpoints for more than 3 dozen chronic nononcologic conditions, including type 2 diabetes, Alzheimer’s, kidney disease, HIV, gout, and lupus. They found no meta-analyses at all for 59% of the surrogate markers, while for those that were studied, few reported high-strength evidence of an association with clinical outcomes.
The findings echo previous research. In a 2020 study in JAMA Network Open, researchers tallied primary endpoints for all FDA approvals of new drugs and therapies during three 3-year periods: 1995-1997, 2005-2007, and 2015-2017. The proportion of products whose approvals were based on the use of clinical endpoints decreased from 43.8% in 1995-1997 to 28.4% in 2005-2007 to 23.3% in 2015-2017. The share based on surrogate endpoints rose from 43.3% to roughly 60% over the same interval.
A 2017 study in the Journal of Health Economics found the use of “imperfect” surrogate endpoints helped support the approval of an average of 16 new drugs per year between 2010 and 2014 compared with six per year from 1998 to 2008.
Similar concerns about weak associations between surrogate markers and drugs used to treat cancer have been documented before, including in a 2020 study published in eClinicalMedicine. The researchers found the surrogate endpoints in the FDA table either were not tested or were tested but proven to be weak surrogates.
“And yet the FDA considered these as good enough not only for accelerated approval but also for regular approval,” said Bishal Gyawali, MD, PhD, associate professor in the department of oncology at Queen’s University, Kingston, Ontario, Canada, who led the group.
The use of surrogate endpoints is also increasing in Europe, said Huseyin Naci, MHS, PhD, associate professor of health policy at the London School of Economics and Political Science in England. He cited a cohort study of 298 randomized clinical trials (RCTs) in JAMA Oncology suggesting “contemporary oncology RCTs now largely measure putative surrogate endpoints.” Dr. Wallach called the FDA’s surrogate table “a great first step toward transparency. But a key column is missing from that table, telling us what is the basis for which the FDA allows drug companies to use the recognized surrogate markers. What is the evidence they are considering?”
If the agency allows companies the flexibility to validate surrogate endpoints, postmarketing studies designed to confirm the clinical utility of those endpoints should follow.
“We obviously want physicians to be guided by evidence when they’re selecting treatments, and they need to be able to interpret the clinical benefits of the drug that they’re prescribing,” he said. “This is really about having the research consumer, patients, and physicians, as well as industry, understand why certain markers are considered and not considered.”
Dr. Wallach reported receiving grants from the FDA (through the Yale University — Mayo Clinic Center of Excellence in Regulatory Science and Innovation), National Institute on Alcohol Abuse and Alcoholism (1K01AA028258), and Johnson & Johnson (through the Yale University Open Data Access Project); and consulting fees from Hagens Berman Sobol Shapiro LLP and Dugan Law Firm APLC outside the submitted work. Dr. Ramachandran reported receiving grants from the Stavros Niarchos Foundation and FDA; receiving consulting fees from ReAct Action on Antibiotic Resistance strategy policy program outside the submitted work; and serving in an unpaid capacity as chair of the FDA task force for the nonprofit organization Doctors for America and in an unpaid capacity as board president for Universities Allied for Essential Medicines North America.
A version of this article appeared on Medscape.com.
Over the past few decades, the US Food and Drug Administration (FDA) has increasingly relied on surrogate measures such as blood tests instead of clinical outcomes for medication approvals. But critics say the agency lacks consistent standards to ensure the surrogate aligns with clinical outcomes that matter to patients — things like improvements in symptoms and gains in function.
Sometimes those decisions backfire. Consider: In July 2021, the FDA approved aducanumab for the treatment of Alzheimer’s disease, bucking the advice of an advisory panel for the agency that questioned the effectiveness of the medication. Regulators relied on data from the drugmaker, Biogen, showing the monoclonal antibody could reduce levels of amyloid beta plaques in blood — a surrogate marker officials hoped would translate to clinical benefit.
The FDA’s decision triggered significant controversy, and Biogen in January announced it is pulling it from the market this year, citing disappointing sales.
Although the case of aducanumab might seem extreme, given the stakes — Alzheimer’s remains a disease without an effective treatment — it’s far from unusual.
“When we prescribe a drug, there is an underlying assumption that the FDA has done its due diligence to confirm the drug is safe and of benefit,” said Reshma Ramachandran, MD, MPP, MHS, a researcher at Yale School of Medicine, New Haven, Connecticut, and a coauthor of a recent review of surrogate outcomes. “In fact, we found either no evidence or low-quality evidence.” Such markers are associated with clinical outcomes. “We just don’t know if they work meaningfully to treat the patient’s condition. The results were pretty shocking for us,” she said.
The FDA in 2018 released an Adult Surrogate Endpoint Table listing markers that can be used as substitutes for clinical outcomes to more quickly test, review, and approve new therapies. The analysis found the majority of these endpoints lacked subsequent confirmations, defined as published meta-analyses of clinical studies to validate the association between the marker and a clinical outcome important to patients.
In a paper published in JAMA, Dr. Ramachandran and her colleagues looked at 37 surrogate endpoints for nearly 3 dozen nononcologic diseases in the table.
Approval with surrogate markers implies responsibility for postapproval or validation studies — not just lab measures or imaging findings but mortality, morbidity, or improved quality of life, said Joshua D. Wallach, PhD, MS, assistant professor in the department of epidemiology at the Emory Rollins School of Public Health in Atlanta and lead author of the JAMA review.
Dr. Wallach said surrogate markers are easier to measure and do not require large and long trials. But the FDA has not provided clear rules for what makes a surrogate marker valid in clinical trials.
“They’ve said that at a minimum, it requires meta-analytical evidence from studies that have looked at the correlation or the association between the surrogate and the clinical outcome,” Dr. Wallach said. “Our understanding was that if that’s a minimum expectation, we should be able to find those studies in the literature. And the reality is that we were unable to find evidence from those types of studies supporting the association between the surrogate and the clinical outcome.”
Physicians generally do not receive training about the FDA approval process and the difference between biomarkers, surrogate markers, and clinical endpoints, Dr. Ramachandran said. “Our study shows that things are much more uncertain than we thought when it comes to the prescribing of new drugs,” she said.
Surrogate Markers on the Rise
Dr. Wallach’s group looked for published meta-analyses compiling randomized controlled trials reporting surrogate endpoints for more than 3 dozen chronic nononcologic conditions, including type 2 diabetes, Alzheimer’s, kidney disease, HIV, gout, and lupus. They found no meta-analyses at all for 59% of the surrogate markers, while for those that were studied, few reported high-strength evidence of an association with clinical outcomes.
The findings echo previous research. In a 2020 study in JAMA Network Open, researchers tallied primary endpoints for all FDA approvals of new drugs and therapies during three 3-year periods: 1995-1997, 2005-2007, and 2015-2017. The proportion of products whose approvals were based on the use of clinical endpoints decreased from 43.8% in 1995-1997 to 28.4% in 2005-2007 to 23.3% in 2015-2017. The share based on surrogate endpoints rose from 43.3% to roughly 60% over the same interval.
A 2017 study in the Journal of Health Economics found the use of “imperfect” surrogate endpoints helped support the approval of an average of 16 new drugs per year between 2010 and 2014 compared with six per year from 1998 to 2008.
Similar concerns about weak associations between surrogate markers and drugs used to treat cancer have been documented before, including in a 2020 study published in eClinicalMedicine. The researchers found the surrogate endpoints in the FDA table either were not tested or were tested but proven to be weak surrogates.
“And yet the FDA considered these as good enough not only for accelerated approval but also for regular approval,” said Bishal Gyawali, MD, PhD, associate professor in the department of oncology at Queen’s University, Kingston, Ontario, Canada, who led the group.
The use of surrogate endpoints is also increasing in Europe, said Huseyin Naci, MHS, PhD, associate professor of health policy at the London School of Economics and Political Science in England. He cited a cohort study of 298 randomized clinical trials (RCTs) in JAMA Oncology suggesting “contemporary oncology RCTs now largely measure putative surrogate endpoints.” Dr. Wallach called the FDA’s surrogate table “a great first step toward transparency. But a key column is missing from that table, telling us what is the basis for which the FDA allows drug companies to use the recognized surrogate markers. What is the evidence they are considering?”
If the agency allows companies the flexibility to validate surrogate endpoints, postmarketing studies designed to confirm the clinical utility of those endpoints should follow.
“We obviously want physicians to be guided by evidence when they’re selecting treatments, and they need to be able to interpret the clinical benefits of the drug that they’re prescribing,” he said. “This is really about having the research consumer, patients, and physicians, as well as industry, understand why certain markers are considered and not considered.”
Dr. Wallach reported receiving grants from the FDA (through the Yale University — Mayo Clinic Center of Excellence in Regulatory Science and Innovation), National Institute on Alcohol Abuse and Alcoholism (1K01AA028258), and Johnson & Johnson (through the Yale University Open Data Access Project); and consulting fees from Hagens Berman Sobol Shapiro LLP and Dugan Law Firm APLC outside the submitted work. Dr. Ramachandran reported receiving grants from the Stavros Niarchos Foundation and FDA; receiving consulting fees from ReAct Action on Antibiotic Resistance strategy policy program outside the submitted work; and serving in an unpaid capacity as chair of the FDA task force for the nonprofit organization Doctors for America and in an unpaid capacity as board president for Universities Allied for Essential Medicines North America.
A version of this article appeared on Medscape.com.
Over the past few decades, the US Food and Drug Administration (FDA) has increasingly relied on surrogate measures such as blood tests instead of clinical outcomes for medication approvals. But critics say the agency lacks consistent standards to ensure the surrogate aligns with clinical outcomes that matter to patients — things like improvements in symptoms and gains in function.
Sometimes those decisions backfire. Consider: In July 2021, the FDA approved aducanumab for the treatment of Alzheimer’s disease, bucking the advice of an advisory panel for the agency that questioned the effectiveness of the medication. Regulators relied on data from the drugmaker, Biogen, showing the monoclonal antibody could reduce levels of amyloid beta plaques in blood — a surrogate marker officials hoped would translate to clinical benefit.
The FDA’s decision triggered significant controversy, and Biogen in January announced it is pulling it from the market this year, citing disappointing sales.
Although the case of aducanumab might seem extreme, given the stakes — Alzheimer’s remains a disease without an effective treatment — it’s far from unusual.
“When we prescribe a drug, there is an underlying assumption that the FDA has done its due diligence to confirm the drug is safe and of benefit,” said Reshma Ramachandran, MD, MPP, MHS, a researcher at Yale School of Medicine, New Haven, Connecticut, and a coauthor of a recent review of surrogate outcomes. “In fact, we found either no evidence or low-quality evidence.” Such markers are associated with clinical outcomes. “We just don’t know if they work meaningfully to treat the patient’s condition. The results were pretty shocking for us,” she said.
The FDA in 2018 released an Adult Surrogate Endpoint Table listing markers that can be used as substitutes for clinical outcomes to more quickly test, review, and approve new therapies. The analysis found the majority of these endpoints lacked subsequent confirmations, defined as published meta-analyses of clinical studies to validate the association between the marker and a clinical outcome important to patients.
In a paper published in JAMA, Dr. Ramachandran and her colleagues looked at 37 surrogate endpoints for nearly 3 dozen nononcologic diseases in the table.
Approval with surrogate markers implies responsibility for postapproval or validation studies — not just lab measures or imaging findings but mortality, morbidity, or improved quality of life, said Joshua D. Wallach, PhD, MS, assistant professor in the department of epidemiology at the Emory Rollins School of Public Health in Atlanta and lead author of the JAMA review.
Dr. Wallach said surrogate markers are easier to measure and do not require large and long trials. But the FDA has not provided clear rules for what makes a surrogate marker valid in clinical trials.
“They’ve said that at a minimum, it requires meta-analytical evidence from studies that have looked at the correlation or the association between the surrogate and the clinical outcome,” Dr. Wallach said. “Our understanding was that if that’s a minimum expectation, we should be able to find those studies in the literature. And the reality is that we were unable to find evidence from those types of studies supporting the association between the surrogate and the clinical outcome.”
Physicians generally do not receive training about the FDA approval process and the difference between biomarkers, surrogate markers, and clinical endpoints, Dr. Ramachandran said. “Our study shows that things are much more uncertain than we thought when it comes to the prescribing of new drugs,” she said.
Surrogate Markers on the Rise
Dr. Wallach’s group looked for published meta-analyses compiling randomized controlled trials reporting surrogate endpoints for more than 3 dozen chronic nononcologic conditions, including type 2 diabetes, Alzheimer’s, kidney disease, HIV, gout, and lupus. They found no meta-analyses at all for 59% of the surrogate markers, while for those that were studied, few reported high-strength evidence of an association with clinical outcomes.
The findings echo previous research. In a 2020 study in JAMA Network Open, researchers tallied primary endpoints for all FDA approvals of new drugs and therapies during three 3-year periods: 1995-1997, 2005-2007, and 2015-2017. The proportion of products whose approvals were based on the use of clinical endpoints decreased from 43.8% in 1995-1997 to 28.4% in 2005-2007 to 23.3% in 2015-2017. The share based on surrogate endpoints rose from 43.3% to roughly 60% over the same interval.
A 2017 study in the Journal of Health Economics found the use of “imperfect” surrogate endpoints helped support the approval of an average of 16 new drugs per year between 2010 and 2014 compared with six per year from 1998 to 2008.
Similar concerns about weak associations between surrogate markers and drugs used to treat cancer have been documented before, including in a 2020 study published in eClinicalMedicine. The researchers found the surrogate endpoints in the FDA table either were not tested or were tested but proven to be weak surrogates.
“And yet the FDA considered these as good enough not only for accelerated approval but also for regular approval,” said Bishal Gyawali, MD, PhD, associate professor in the department of oncology at Queen’s University, Kingston, Ontario, Canada, who led the group.
The use of surrogate endpoints is also increasing in Europe, said Huseyin Naci, MHS, PhD, associate professor of health policy at the London School of Economics and Political Science in England. He cited a cohort study of 298 randomized clinical trials (RCTs) in JAMA Oncology suggesting “contemporary oncology RCTs now largely measure putative surrogate endpoints.” Dr. Wallach called the FDA’s surrogate table “a great first step toward transparency. But a key column is missing from that table, telling us what is the basis for which the FDA allows drug companies to use the recognized surrogate markers. What is the evidence they are considering?”
If the agency allows companies the flexibility to validate surrogate endpoints, postmarketing studies designed to confirm the clinical utility of those endpoints should follow.
“We obviously want physicians to be guided by evidence when they’re selecting treatments, and they need to be able to interpret the clinical benefits of the drug that they’re prescribing,” he said. “This is really about having the research consumer, patients, and physicians, as well as industry, understand why certain markers are considered and not considered.”
Dr. Wallach reported receiving grants from the FDA (through the Yale University — Mayo Clinic Center of Excellence in Regulatory Science and Innovation), National Institute on Alcohol Abuse and Alcoholism (1K01AA028258), and Johnson & Johnson (through the Yale University Open Data Access Project); and consulting fees from Hagens Berman Sobol Shapiro LLP and Dugan Law Firm APLC outside the submitted work. Dr. Ramachandran reported receiving grants from the Stavros Niarchos Foundation and FDA; receiving consulting fees from ReAct Action on Antibiotic Resistance strategy policy program outside the submitted work; and serving in an unpaid capacity as chair of the FDA task force for the nonprofit organization Doctors for America and in an unpaid capacity as board president for Universities Allied for Essential Medicines North America.
A version of this article appeared on Medscape.com.
FROM JAMA
What Health Risks Do Microplastics Pose?
The annual production of plastic worldwide has increased exponentially from about 2 million tons in 1950 to 460 million tons in 2019, and current levels are expected to triple by 2060.
Plastic contains more than 10,000 chemicals, including carcinogenic substances and endocrine disruptors. Plastic and associated chemicals are responsible for widespread pollution, contaminating aquatic (marine and freshwater), terrestrial, and atmospheric environments globally.
Atmospheric concentrations of plastic particles are on the rise, to the extent that in a remote station in the Eastern Alps in Austria, the contribution of micro- and nanoplastics (MNPs) to organic matter was comparable to data collected at an urban site.
The ocean is the ultimate destination for much of the plastic. All oceans, on the surface and in the depths, contain plastic, which is even found in polar sea ice. Many plastics seem to resist decomposition in the ocean and could persist in the environment for decades. Macro- and microplastic (MP) particles have been identified in hundreds of marine species, including species consumed by humans.
The quantity and fate of MP particles (> 10 µm) and smaller nanoplastics (< 10 µm) in aquatic environments are poorly understood, but what is most concerning is their ability to cross biologic barriers and the potential harm associated with their mobility in biologic systems.
MNP Exposure
MNPs can originate from a wide variety of sources, including food, beverages, and food product packaging. Water bottles represent a significant source of ingestible MNPs for people in their daily lives. Recent estimates, using stimulated Raman scattering imaging, documented a concentration of MNP of approximately 2.4 ± 1.3 × 105 particles per liter of bottled water. Around 90% are nanoplastics, which is two to three orders of magnitude higher than previously reported results for larger MPs.
MNPs enter the body primarily through ingestion or inhalation. For example, MNPs can be ingested by drinking liquids or eating food that has been stored or heated in plastic containers from which they have leaked or by using toothpaste that contains them. Infants are exposed to MPs from artificial milk preparation in polypropylene baby bottles, with higher levels than previously detected and ranging from 14,600 to 4,550,000 particles per capita per day.
MNP and Biologic Systems
The possible formation of hetero-aggregates between nanoplastics and natural organic matter has long been recognized as a potential challenge in the analysis of nanoplastics and can influence toxicologic results in biologic exposure. The direct visualization of such hetero-aggregates in real-world samples supports these concerns, but the analysis of MNPs with traditional techniques remains challenging. Unlike engineered nanoparticles (prepared in the laboratory as model systems), the nanoplastics in the environment are label-free and exhibit significant heterogeneity in chemical composition and morphology.
A systematic analysis of evidence on the toxic effects of MNPs on murine models, however, showed that 52.78% of biologic endpoints (related to glucose metabolism, reproduction, oxidative stress, and lipid metabolism) were significantly affected by MNP exposure.
Between Risk and Toxicity
MNP can enter the body in vivo through the digestive tract, respiratory tract, and skin contact. On average, humans could ingest from 0.1 to 5 g of MNP per week through various exposure routes.
MNPs are a potential risk factor for cardiovascular diseases, as suggested by a recent study on 257 patients with carotid atheromatous plaques. In 58.4% of cases, polyvinyl chloride was detected in the carotid artery plaque, with an average level of 5.2 ± 2.4 μg/mg of plaque. Patients with MNPs inside the atheroma had a higher risk (relative risk, 4.53) for a composite cardiovascular event of myocardial infarction, stroke, or death from any cause at 34 months of follow-up than participants where MNPs were not detectable inside the atheromatous plaque.
The potential link between inflammatory bowel disease (IBD) and MPs has been hypothesized by a study that reported a higher fecal MP concentration in patients with IBD than in healthy individuals. Fecal MP level was correlated with disease severity.
However, these studies have not demonstrated a causal relationship between MNPs and disease, and the way MNPs may influence cellular functions and induce stress responses is not yet well understood.
Future Scenarios
Current evidence confirms the fragmentation of plastic beyond the micrometer level and has unequivocally detected nanoplastics in real samples. As with many other particle distributions of the same size in the natural world, there are substantially more nanoplastics, despite their invisibility with conventional imaging techniques, than particles larger than the micron size.
The initial results of studies on MNPs in humans will stimulate future research on the amounts of MNPs that accumulate in tissue over a person’s lifetime. Researchers also will examine how the particles’ characteristics, including their chemical composition, size, and shape, can influence organs and tissues.
The way MNPs can cause harm, including through effects on the immune system and microbiome, will need to be clarified by investigating possible direct cytotoxic effects, consistent with the introductory statement of the Organization for Economic Cooperation and Development global policy forum on plastics, which states, “Plastic pollution is one of the great environmental challenges of the 21st century, causing wide-ranging damage to ecosystems and human health.”
This story was translated from Univadis Italy, which is part of the Medscape professional network, using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.
The annual production of plastic worldwide has increased exponentially from about 2 million tons in 1950 to 460 million tons in 2019, and current levels are expected to triple by 2060.
Plastic contains more than 10,000 chemicals, including carcinogenic substances and endocrine disruptors. Plastic and associated chemicals are responsible for widespread pollution, contaminating aquatic (marine and freshwater), terrestrial, and atmospheric environments globally.
Atmospheric concentrations of plastic particles are on the rise, to the extent that in a remote station in the Eastern Alps in Austria, the contribution of micro- and nanoplastics (MNPs) to organic matter was comparable to data collected at an urban site.
The ocean is the ultimate destination for much of the plastic. All oceans, on the surface and in the depths, contain plastic, which is even found in polar sea ice. Many plastics seem to resist decomposition in the ocean and could persist in the environment for decades. Macro- and microplastic (MP) particles have been identified in hundreds of marine species, including species consumed by humans.
The quantity and fate of MP particles (> 10 µm) and smaller nanoplastics (< 10 µm) in aquatic environments are poorly understood, but what is most concerning is their ability to cross biologic barriers and the potential harm associated with their mobility in biologic systems.
MNP Exposure
MNPs can originate from a wide variety of sources, including food, beverages, and food product packaging. Water bottles represent a significant source of ingestible MNPs for people in their daily lives. Recent estimates, using stimulated Raman scattering imaging, documented a concentration of MNP of approximately 2.4 ± 1.3 × 105 particles per liter of bottled water. Around 90% are nanoplastics, which is two to three orders of magnitude higher than previously reported results for larger MPs.
MNPs enter the body primarily through ingestion or inhalation. For example, MNPs can be ingested by drinking liquids or eating food that has been stored or heated in plastic containers from which they have leaked or by using toothpaste that contains them. Infants are exposed to MPs from artificial milk preparation in polypropylene baby bottles, with higher levels than previously detected and ranging from 14,600 to 4,550,000 particles per capita per day.
MNP and Biologic Systems
The possible formation of hetero-aggregates between nanoplastics and natural organic matter has long been recognized as a potential challenge in the analysis of nanoplastics and can influence toxicologic results in biologic exposure. The direct visualization of such hetero-aggregates in real-world samples supports these concerns, but the analysis of MNPs with traditional techniques remains challenging. Unlike engineered nanoparticles (prepared in the laboratory as model systems), the nanoplastics in the environment are label-free and exhibit significant heterogeneity in chemical composition and morphology.
A systematic analysis of evidence on the toxic effects of MNPs on murine models, however, showed that 52.78% of biologic endpoints (related to glucose metabolism, reproduction, oxidative stress, and lipid metabolism) were significantly affected by MNP exposure.
Between Risk and Toxicity
MNP can enter the body in vivo through the digestive tract, respiratory tract, and skin contact. On average, humans could ingest from 0.1 to 5 g of MNP per week through various exposure routes.
MNPs are a potential risk factor for cardiovascular diseases, as suggested by a recent study on 257 patients with carotid atheromatous plaques. In 58.4% of cases, polyvinyl chloride was detected in the carotid artery plaque, with an average level of 5.2 ± 2.4 μg/mg of plaque. Patients with MNPs inside the atheroma had a higher risk (relative risk, 4.53) for a composite cardiovascular event of myocardial infarction, stroke, or death from any cause at 34 months of follow-up than participants where MNPs were not detectable inside the atheromatous plaque.
The potential link between inflammatory bowel disease (IBD) and MPs has been hypothesized by a study that reported a higher fecal MP concentration in patients with IBD than in healthy individuals. Fecal MP level was correlated with disease severity.
However, these studies have not demonstrated a causal relationship between MNPs and disease, and the way MNPs may influence cellular functions and induce stress responses is not yet well understood.
Future Scenarios
Current evidence confirms the fragmentation of plastic beyond the micrometer level and has unequivocally detected nanoplastics in real samples. As with many other particle distributions of the same size in the natural world, there are substantially more nanoplastics, despite their invisibility with conventional imaging techniques, than particles larger than the micron size.
The initial results of studies on MNPs in humans will stimulate future research on the amounts of MNPs that accumulate in tissue over a person’s lifetime. Researchers also will examine how the particles’ characteristics, including their chemical composition, size, and shape, can influence organs and tissues.
The way MNPs can cause harm, including through effects on the immune system and microbiome, will need to be clarified by investigating possible direct cytotoxic effects, consistent with the introductory statement of the Organization for Economic Cooperation and Development global policy forum on plastics, which states, “Plastic pollution is one of the great environmental challenges of the 21st century, causing wide-ranging damage to ecosystems and human health.”
This story was translated from Univadis Italy, which is part of the Medscape professional network, using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.
The annual production of plastic worldwide has increased exponentially from about 2 million tons in 1950 to 460 million tons in 2019, and current levels are expected to triple by 2060.
Plastic contains more than 10,000 chemicals, including carcinogenic substances and endocrine disruptors. Plastic and associated chemicals are responsible for widespread pollution, contaminating aquatic (marine and freshwater), terrestrial, and atmospheric environments globally.
Atmospheric concentrations of plastic particles are on the rise, to the extent that in a remote station in the Eastern Alps in Austria, the contribution of micro- and nanoplastics (MNPs) to organic matter was comparable to data collected at an urban site.
The ocean is the ultimate destination for much of the plastic. All oceans, on the surface and in the depths, contain plastic, which is even found in polar sea ice. Many plastics seem to resist decomposition in the ocean and could persist in the environment for decades. Macro- and microplastic (MP) particles have been identified in hundreds of marine species, including species consumed by humans.
The quantity and fate of MP particles (> 10 µm) and smaller nanoplastics (< 10 µm) in aquatic environments are poorly understood, but what is most concerning is their ability to cross biologic barriers and the potential harm associated with their mobility in biologic systems.
MNP Exposure
MNPs can originate from a wide variety of sources, including food, beverages, and food product packaging. Water bottles represent a significant source of ingestible MNPs for people in their daily lives. Recent estimates, using stimulated Raman scattering imaging, documented a concentration of MNP of approximately 2.4 ± 1.3 × 105 particles per liter of bottled water. Around 90% are nanoplastics, which is two to three orders of magnitude higher than previously reported results for larger MPs.
MNPs enter the body primarily through ingestion or inhalation. For example, MNPs can be ingested by drinking liquids or eating food that has been stored or heated in plastic containers from which they have leaked or by using toothpaste that contains them. Infants are exposed to MPs from artificial milk preparation in polypropylene baby bottles, with higher levels than previously detected and ranging from 14,600 to 4,550,000 particles per capita per day.
MNP and Biologic Systems
The possible formation of hetero-aggregates between nanoplastics and natural organic matter has long been recognized as a potential challenge in the analysis of nanoplastics and can influence toxicologic results in biologic exposure. The direct visualization of such hetero-aggregates in real-world samples supports these concerns, but the analysis of MNPs with traditional techniques remains challenging. Unlike engineered nanoparticles (prepared in the laboratory as model systems), the nanoplastics in the environment are label-free and exhibit significant heterogeneity in chemical composition and morphology.
A systematic analysis of evidence on the toxic effects of MNPs on murine models, however, showed that 52.78% of biologic endpoints (related to glucose metabolism, reproduction, oxidative stress, and lipid metabolism) were significantly affected by MNP exposure.
Between Risk and Toxicity
MNP can enter the body in vivo through the digestive tract, respiratory tract, and skin contact. On average, humans could ingest from 0.1 to 5 g of MNP per week through various exposure routes.
MNPs are a potential risk factor for cardiovascular diseases, as suggested by a recent study on 257 patients with carotid atheromatous plaques. In 58.4% of cases, polyvinyl chloride was detected in the carotid artery plaque, with an average level of 5.2 ± 2.4 μg/mg of plaque. Patients with MNPs inside the atheroma had a higher risk (relative risk, 4.53) for a composite cardiovascular event of myocardial infarction, stroke, or death from any cause at 34 months of follow-up than participants where MNPs were not detectable inside the atheromatous plaque.
The potential link between inflammatory bowel disease (IBD) and MPs has been hypothesized by a study that reported a higher fecal MP concentration in patients with IBD than in healthy individuals. Fecal MP level was correlated with disease severity.
However, these studies have not demonstrated a causal relationship between MNPs and disease, and the way MNPs may influence cellular functions and induce stress responses is not yet well understood.
Future Scenarios
Current evidence confirms the fragmentation of plastic beyond the micrometer level and has unequivocally detected nanoplastics in real samples. As with many other particle distributions of the same size in the natural world, there are substantially more nanoplastics, despite their invisibility with conventional imaging techniques, than particles larger than the micron size.
The initial results of studies on MNPs in humans will stimulate future research on the amounts of MNPs that accumulate in tissue over a person’s lifetime. Researchers also will examine how the particles’ characteristics, including their chemical composition, size, and shape, can influence organs and tissues.
The way MNPs can cause harm, including through effects on the immune system and microbiome, will need to be clarified by investigating possible direct cytotoxic effects, consistent with the introductory statement of the Organization for Economic Cooperation and Development global policy forum on plastics, which states, “Plastic pollution is one of the great environmental challenges of the 21st century, causing wide-ranging damage to ecosystems and human health.”
This story was translated from Univadis Italy, which is part of the Medscape professional network, using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.
New Immunotherapy Combo Shows Promise for Triple-Negative Breast Cancer
MORPHEUS-pan BC (NCT03424005) is evaluating multiple treatment combinations in patients with locally advanced or metastatic TNBC.
The trial’s interim clinical data was presented at the European Society for Medical Oncology (ESMO) Breast Cancer annual congress.
Rationale for Combining Antibody-Drug Conjugates with Immunotherapy
Peter Schmid, MD, PhD, professor at the Centre for Experimental Cancer Medicine in London, England, presented interim findings from one study arm of MORPHEUS-pan BC at the meeting. The arm consisted of patients with TNBC who were treated with a combination of atezolizumab, a PD-L1 inhibitor, and sacituzumab govitecan, an antibody-drug conjugate targeting the Trop-2 protein commonly expressed in TNBC.
TNBC is one of the most challenging subtypes of breast cancer to treat because of its aggressive characteristics and innate resistance to hormonal therapy and HER2-targeted treatments. However, the recent approval of immunotherapy for TNBC has provided renewed hope for patients, according to Dr. Schmid.
Atezolizumab, in combination with nab-paclitaxel, has already been approved as a first-line treatment for PD-L1–positive, unresectable locally advanced or metastatic TNBC; however, not all patients respond to this combination treatment. Sacituzumab govitecan is approved for second-line and subsequent-line treatment of metastatic TNBC.
“Cancer immunotherapy in combination with chemotherapy has transformed the TNBC treatment landscape, but new combinations are needed to further improve survival outcomes,” Dr. Schmid said during his presentation. “We hoped that combining immunotherapy with an antibody-drug conjugate would not only improve safety but also increase efficacy through enhanced immune activation.”
Study Design
The MORPHEUS-pan BC trial enrolled patients with previously untreated, PD-L1–positive, inoperable, locally advanced or metastatic TNBC. Patients were randomized to receive experimental treatment consisting of atezolizumab plus the antibody-drug conjugate sacituzumab govitecan. Patients in the second arm received a control regimen of atezolizumab plus nab-paclitaxel chemotherapy.
“The control regimen is part of the current standard of care for patients with PD-L1–positive TNBC,” Dr. Schmid explained in his presentation. As of the data cut-off, 11 patients were enrolled in the control arm and 31 in the atezolizumab plus sacituzumab govitecan arm.
During the discussion session after his talk, Dr. Schmid commented on the use of PD-L1 expression to select patients for enrollment, acknowledging that PD-L1 is not the best biomarker.
“Its expression is very dynamic and can change rapidly,” he said. He added, however, that it is currently the most suitable biomarker for patient selection for treatment with anti–PD-1/PD-L1 agents.
Sara M. Tolaney, MD, MPH, added that, because patients were selected based on PD-L1 expression, it is unclear whether this combination therapy would show anti-tumor activity in patients with PD-L1–negative tumors. Dr. Tolaney, a medical oncologist at the Dana-Farber Cancer Institute who was not involved in the study, served as a discussant, providing her expert opinion on the findings presented by Dr. Schmid.
Promising Anti-tumor Activity
The combination of atezolizumab and sacituzumab govitecan demonstrated promising anti-tumor activity as initial treatment for this patient population. The interim analysis at 18 weeks showed an objective response rate of 76.7% (95% CI, 57.7-90.1; n = 23, including five complete responses) in the atezolizumab plus sacituzumab govitecan arm, versus 66.7% (95% CI, 29.9-92.5; n = 6, all of which were partial responses) in the control arm.
“The 66% response rate in the control arm aligns with what we see in historical data from patients treated with immunotherapy plus chemotherapy,” noted Dr. Schmid during his talk.
The clinical benefit rate, which includes complete and partial responses as well as stable disease, was also encouraging at 83.3% (95% CI, 65.3-94.4) with the dual immunotherapy regimen versus 66.7% (95% CI, 29.9-92.5) with standard therapy.
Commenting on the potential mechanisms of the synergistic effect of this combination therapy, Dr. Tolaney said, “In addition to delivering chemotherapy payloads to cancer cells, antibody-drug conjugates can lead to dendritic cell activation, T-cell activation, and immune cell infiltration.”
She added that antibody-drug conjugates can cause Fc activation in NK cells, thereby enhancing antibody-dependent cytotoxicity.
Encouraging survival trends
Interim survival data showed trends favoring atezolizumab plus sacituzumab govitecan over the control arm of atezolizumab plus nab-paclitaxel chemotherapy. The median progression-free survival (PFS) was 12.2 months (95% CI, 7.4-not estimable) in the immunotherapy combination group versus 5.9 months (95% CI, 4.1-8.7) in the control group, yielding a hazard ratio of 0.29 (95% CI, 0.11-0.70). The overall survival data are still immature.
During the discussion session, Dr. Schmid cautioned that, although the benefit of this combination therapy in terms of PFS seems promising, the validity of the hazard ratio is limited because of the small cohort size. He added, “The survival data is still immature, and longer follow-up is needed.”
These encouraging response and PFS rates need to be confirmed in larger studies of this immunotherapy combination as a potential new first-line standard for PD-L1–positive TNBC, according to Dr. Schmid.
Relationship between biomarker expression and response
The MORPHEUS-pan BC trial enrolled only patients with PD-L1–positive tumors at baseline, defined as PD-L1 expression in at least 1% of immune cells infiltrating the tumor. Tumors at baseline were also tested for Trop-2 expression, CD8 immune phenotype, and stromal tumor-infiltrating lymphocytes (TILs).
“We wanted to get an idea of whether these biomarkers are associated with treatment response,” Dr. Schmid explained during his talk.
Although the benefit of sacituzumab govitecan treatment was observed across all Trop-2 expression levels, preliminary analyses suggest that high Trop-2 expression, CD8 immune phenotype, and stromal TILs may be associated with response to atezolizumab plus sacituzumab govitecan. However, Dr. Schmid noted that validation of these associations in larger cohorts is required.
Safety of combination treatment
The side effect profile of atezolizumab plus sacituzumab govitecan appeared consistent with that expected from the two individual drugs, with no new toxicity signals.
All patients in both treatment arms experienced at least one adverse event; however, there were no fatal adverse events. Grade 3-4 adverse events were more common in the experimental arm (70.0%) than in the control arm (44.4%), while serious adverse events were more common in the control group (44.4% versus 23.3%). Immune-related adverse events were considerably more common in the atezolizumab plus sacituzumab govitecan group than in the control group (80.0% versus 55.6%).
The most common adverse events in patients treated with atezolizumab plus sacituzumab govitecan were nausea, alopecia, diarrhea, and neutropenia. Dr. Schmid emphasized in his presentation that this toxicity profile was dominated by adverse events that are common in patients treated with chemotherapy.
“These safety data are significant as they suggest that the combination therapy does not introduce additional risks beyond those already associated with each drug,” he added.
Looking Ahead
Dr. Tolaney highlighted that the cohort size of this study was small and the follow-up time was insufficient to draw conclusions about survival outcomes. Larger studies with long-term follow-up are needed to confirm the efficacy of first-line atezolizumab plus sacituzumab govitecan, she said.
“While this was a small study, the response data is very intriguing, with 17% of patients experiencing complete responses. The PFS data are also impressive, and there seems to be an interesting trend towards better response in patients with high Trop-2 expression and those with high levels of stromal TILs,” she added.
Dr. Tolaney also noted that the response rates and PFS data presented are similar to those of one of the treatment arms in the BEGONIA trial (NCT03742102), which investigated different combinations of immunotherapy in patients with metastatic TNBC. Like MORPHEUS-pan BC (NCT03424005), this study evaluated the efficacy of a different antibody-drug conjugate with chemotherapy. Patients in the study arm of the BEGONIA trial she was referring to received durvalumab (an anti-PD-L1 agent) and datopotamab deruxtecan (an antibody-drug conjugate).
Dr. Schmid said that biomarker analyses are ongoing to assess whether there is a correlation between Trop-2 expression levels and the benefits of sacituzumab govitecan. Studies are also needed to determine whether this combination can improve pathologic complete response rates in early-stage TNBC.
Dr. Tolaney echoed the importance of evaluating the efficacy of antibody-drug conjugates plus immune checkpoint inhibitors in different settings, including patients with PD-L1–negative or immunologically cold tumors and those with early-stage disease. “Ultimately, we want this combination treatment to move forward to early-stage TNBC to see if we could cure more patients,” she said, during the discussion.
Dr. Schmid reported financial relationships with Pfizer, AstraZeneca, Novartis, Gilead, Roche, Merck, MSD, BI, Seagen, Amgen, Bayer, Eisai, Celgene, Lilly, and Puma (consulting or advisory roles); Pfizer, AstraZeneca, Novartis, Gilead, Roche, Merck, MSD, BI, Seagen, Amgen, Bayer, Eisai, Celgene, Lilly, and Puma (honoraria); and AstraZeneca, Genentech, Roche, Oncogenex, Novartis, Astellas, and Medivation (research funding). Dr. Tolaney reported financial relationships with Novartis, Pfizer, Merck, Eli Lilly, AstraZeneca, Genentech/Roche, Eisai, Sanofi, Bristol Myers Squibb, Seattle Genetics, CytomX Therapeutics, Daiichi Sankyo, Gilead, Ellipses Pharma, 4D Pharma, OncoSec Medical Inc., Beyond Spring Pharmaceuticals, OncXerna, Zymeworks, Zentalis, Blueprint Medicines, Reveal Genomics, ARC Therapeutics, Infinity Therapeutics, Myovant, Zetagen, Umoja Biopharma, Menarini/Stemline, Aadi Biopharma, Bayer, and Jazz Pharmaceuticals (consulting or advisory roles); Genentech/Roche, Merck, Exelixis, Pfizer, Lilly, Novartis, Nanostring, Bristol Myers Squibb, Eisai, AstraZeneca, Gilead, Cyclacel, Sanofi, and Seattle Genetics (research funding).
MORPHEUS-pan BC (NCT03424005) is evaluating multiple treatment combinations in patients with locally advanced or metastatic TNBC.
The trial’s interim clinical data was presented at the European Society for Medical Oncology (ESMO) Breast Cancer annual congress.
Rationale for Combining Antibody-Drug Conjugates with Immunotherapy
Peter Schmid, MD, PhD, professor at the Centre for Experimental Cancer Medicine in London, England, presented interim findings from one study arm of MORPHEUS-pan BC at the meeting. The arm consisted of patients with TNBC who were treated with a combination of atezolizumab, a PD-L1 inhibitor, and sacituzumab govitecan, an antibody-drug conjugate targeting the Trop-2 protein commonly expressed in TNBC.
TNBC is one of the most challenging subtypes of breast cancer to treat because of its aggressive characteristics and innate resistance to hormonal therapy and HER2-targeted treatments. However, the recent approval of immunotherapy for TNBC has provided renewed hope for patients, according to Dr. Schmid.
Atezolizumab, in combination with nab-paclitaxel, has already been approved as a first-line treatment for PD-L1–positive, unresectable locally advanced or metastatic TNBC; however, not all patients respond to this combination treatment. Sacituzumab govitecan is approved for second-line and subsequent-line treatment of metastatic TNBC.
“Cancer immunotherapy in combination with chemotherapy has transformed the TNBC treatment landscape, but new combinations are needed to further improve survival outcomes,” Dr. Schmid said during his presentation. “We hoped that combining immunotherapy with an antibody-drug conjugate would not only improve safety but also increase efficacy through enhanced immune activation.”
Study Design
The MORPHEUS-pan BC trial enrolled patients with previously untreated, PD-L1–positive, inoperable, locally advanced or metastatic TNBC. Patients were randomized to receive experimental treatment consisting of atezolizumab plus the antibody-drug conjugate sacituzumab govitecan. Patients in the second arm received a control regimen of atezolizumab plus nab-paclitaxel chemotherapy.
“The control regimen is part of the current standard of care for patients with PD-L1–positive TNBC,” Dr. Schmid explained in his presentation. As of the data cut-off, 11 patients were enrolled in the control arm and 31 in the atezolizumab plus sacituzumab govitecan arm.
During the discussion session after his talk, Dr. Schmid commented on the use of PD-L1 expression to select patients for enrollment, acknowledging that PD-L1 is not the best biomarker.
“Its expression is very dynamic and can change rapidly,” he said. He added, however, that it is currently the most suitable biomarker for patient selection for treatment with anti–PD-1/PD-L1 agents.
Sara M. Tolaney, MD, MPH, added that, because patients were selected based on PD-L1 expression, it is unclear whether this combination therapy would show anti-tumor activity in patients with PD-L1–negative tumors. Dr. Tolaney, a medical oncologist at the Dana-Farber Cancer Institute who was not involved in the study, served as a discussant, providing her expert opinion on the findings presented by Dr. Schmid.
Promising Anti-tumor Activity
The combination of atezolizumab and sacituzumab govitecan demonstrated promising anti-tumor activity as initial treatment for this patient population. The interim analysis at 18 weeks showed an objective response rate of 76.7% (95% CI, 57.7-90.1; n = 23, including five complete responses) in the atezolizumab plus sacituzumab govitecan arm, versus 66.7% (95% CI, 29.9-92.5; n = 6, all of which were partial responses) in the control arm.
“The 66% response rate in the control arm aligns with what we see in historical data from patients treated with immunotherapy plus chemotherapy,” noted Dr. Schmid during his talk.
The clinical benefit rate, which includes complete and partial responses as well as stable disease, was also encouraging at 83.3% (95% CI, 65.3-94.4) with the dual immunotherapy regimen versus 66.7% (95% CI, 29.9-92.5) with standard therapy.
Commenting on the potential mechanisms of the synergistic effect of this combination therapy, Dr. Tolaney said, “In addition to delivering chemotherapy payloads to cancer cells, antibody-drug conjugates can lead to dendritic cell activation, T-cell activation, and immune cell infiltration.”
She added that antibody-drug conjugates can cause Fc activation in NK cells, thereby enhancing antibody-dependent cytotoxicity.
Encouraging survival trends
Interim survival data showed trends favoring atezolizumab plus sacituzumab govitecan over the control arm of atezolizumab plus nab-paclitaxel chemotherapy. The median progression-free survival (PFS) was 12.2 months (95% CI, 7.4-not estimable) in the immunotherapy combination group versus 5.9 months (95% CI, 4.1-8.7) in the control group, yielding a hazard ratio of 0.29 (95% CI, 0.11-0.70). The overall survival data are still immature.
During the discussion session, Dr. Schmid cautioned that, although the benefit of this combination therapy in terms of PFS seems promising, the validity of the hazard ratio is limited because of the small cohort size. He added, “The survival data is still immature, and longer follow-up is needed.”
These encouraging response and PFS rates need to be confirmed in larger studies of this immunotherapy combination as a potential new first-line standard for PD-L1–positive TNBC, according to Dr. Schmid.
Relationship between biomarker expression and response
The MORPHEUS-pan BC trial enrolled only patients with PD-L1–positive tumors at baseline, defined as PD-L1 expression in at least 1% of immune cells infiltrating the tumor. Tumors at baseline were also tested for Trop-2 expression, CD8 immune phenotype, and stromal tumor-infiltrating lymphocytes (TILs).
“We wanted to get an idea of whether these biomarkers are associated with treatment response,” Dr. Schmid explained during his talk.
Although the benefit of sacituzumab govitecan treatment was observed across all Trop-2 expression levels, preliminary analyses suggest that high Trop-2 expression, CD8 immune phenotype, and stromal TILs may be associated with response to atezolizumab plus sacituzumab govitecan. However, Dr. Schmid noted that validation of these associations in larger cohorts is required.
Safety of combination treatment
The side effect profile of atezolizumab plus sacituzumab govitecan appeared consistent with that expected from the two individual drugs, with no new toxicity signals.
All patients in both treatment arms experienced at least one adverse event; however, there were no fatal adverse events. Grade 3-4 adverse events were more common in the experimental arm (70.0%) than in the control arm (44.4%), while serious adverse events were more common in the control group (44.4% versus 23.3%). Immune-related adverse events were considerably more common in the atezolizumab plus sacituzumab govitecan group than in the control group (80.0% versus 55.6%).
The most common adverse events in patients treated with atezolizumab plus sacituzumab govitecan were nausea, alopecia, diarrhea, and neutropenia. Dr. Schmid emphasized in his presentation that this toxicity profile was dominated by adverse events that are common in patients treated with chemotherapy.
“These safety data are significant as they suggest that the combination therapy does not introduce additional risks beyond those already associated with each drug,” he added.
Looking Ahead
Dr. Tolaney highlighted that the cohort size of this study was small and the follow-up time was insufficient to draw conclusions about survival outcomes. Larger studies with long-term follow-up are needed to confirm the efficacy of first-line atezolizumab plus sacituzumab govitecan, she said.
“While this was a small study, the response data is very intriguing, with 17% of patients experiencing complete responses. The PFS data are also impressive, and there seems to be an interesting trend towards better response in patients with high Trop-2 expression and those with high levels of stromal TILs,” she added.
Dr. Tolaney also noted that the response rates and PFS data presented are similar to those of one of the treatment arms in the BEGONIA trial (NCT03742102), which investigated different combinations of immunotherapy in patients with metastatic TNBC. Like MORPHEUS-pan BC (NCT03424005), this study evaluated the efficacy of a different antibody-drug conjugate with chemotherapy. Patients in the study arm of the BEGONIA trial she was referring to received durvalumab (an anti-PD-L1 agent) and datopotamab deruxtecan (an antibody-drug conjugate).
Dr. Schmid said that biomarker analyses are ongoing to assess whether there is a correlation between Trop-2 expression levels and the benefits of sacituzumab govitecan. Studies are also needed to determine whether this combination can improve pathologic complete response rates in early-stage TNBC.
Dr. Tolaney echoed the importance of evaluating the efficacy of antibody-drug conjugates plus immune checkpoint inhibitors in different settings, including patients with PD-L1–negative or immunologically cold tumors and those with early-stage disease. “Ultimately, we want this combination treatment to move forward to early-stage TNBC to see if we could cure more patients,” she said, during the discussion.
Dr. Schmid reported financial relationships with Pfizer, AstraZeneca, Novartis, Gilead, Roche, Merck, MSD, BI, Seagen, Amgen, Bayer, Eisai, Celgene, Lilly, and Puma (consulting or advisory roles); Pfizer, AstraZeneca, Novartis, Gilead, Roche, Merck, MSD, BI, Seagen, Amgen, Bayer, Eisai, Celgene, Lilly, and Puma (honoraria); and AstraZeneca, Genentech, Roche, Oncogenex, Novartis, Astellas, and Medivation (research funding). Dr. Tolaney reported financial relationships with Novartis, Pfizer, Merck, Eli Lilly, AstraZeneca, Genentech/Roche, Eisai, Sanofi, Bristol Myers Squibb, Seattle Genetics, CytomX Therapeutics, Daiichi Sankyo, Gilead, Ellipses Pharma, 4D Pharma, OncoSec Medical Inc., Beyond Spring Pharmaceuticals, OncXerna, Zymeworks, Zentalis, Blueprint Medicines, Reveal Genomics, ARC Therapeutics, Infinity Therapeutics, Myovant, Zetagen, Umoja Biopharma, Menarini/Stemline, Aadi Biopharma, Bayer, and Jazz Pharmaceuticals (consulting or advisory roles); Genentech/Roche, Merck, Exelixis, Pfizer, Lilly, Novartis, Nanostring, Bristol Myers Squibb, Eisai, AstraZeneca, Gilead, Cyclacel, Sanofi, and Seattle Genetics (research funding).
MORPHEUS-pan BC (NCT03424005) is evaluating multiple treatment combinations in patients with locally advanced or metastatic TNBC.
The trial’s interim clinical data was presented at the European Society for Medical Oncology (ESMO) Breast Cancer annual congress.
Rationale for Combining Antibody-Drug Conjugates with Immunotherapy
Peter Schmid, MD, PhD, professor at the Centre for Experimental Cancer Medicine in London, England, presented interim findings from one study arm of MORPHEUS-pan BC at the meeting. The arm consisted of patients with TNBC who were treated with a combination of atezolizumab, a PD-L1 inhibitor, and sacituzumab govitecan, an antibody-drug conjugate targeting the Trop-2 protein commonly expressed in TNBC.
TNBC is one of the most challenging subtypes of breast cancer to treat because of its aggressive characteristics and innate resistance to hormonal therapy and HER2-targeted treatments. However, the recent approval of immunotherapy for TNBC has provided renewed hope for patients, according to Dr. Schmid.
Atezolizumab, in combination with nab-paclitaxel, has already been approved as a first-line treatment for PD-L1–positive, unresectable locally advanced or metastatic TNBC; however, not all patients respond to this combination treatment. Sacituzumab govitecan is approved for second-line and subsequent-line treatment of metastatic TNBC.
“Cancer immunotherapy in combination with chemotherapy has transformed the TNBC treatment landscape, but new combinations are needed to further improve survival outcomes,” Dr. Schmid said during his presentation. “We hoped that combining immunotherapy with an antibody-drug conjugate would not only improve safety but also increase efficacy through enhanced immune activation.”
Study Design
The MORPHEUS-pan BC trial enrolled patients with previously untreated, PD-L1–positive, inoperable, locally advanced or metastatic TNBC. Patients were randomized to receive experimental treatment consisting of atezolizumab plus the antibody-drug conjugate sacituzumab govitecan. Patients in the second arm received a control regimen of atezolizumab plus nab-paclitaxel chemotherapy.
“The control regimen is part of the current standard of care for patients with PD-L1–positive TNBC,” Dr. Schmid explained in his presentation. As of the data cut-off, 11 patients were enrolled in the control arm and 31 in the atezolizumab plus sacituzumab govitecan arm.
During the discussion session after his talk, Dr. Schmid commented on the use of PD-L1 expression to select patients for enrollment, acknowledging that PD-L1 is not the best biomarker.
“Its expression is very dynamic and can change rapidly,” he said. He added, however, that it is currently the most suitable biomarker for patient selection for treatment with anti–PD-1/PD-L1 agents.
Sara M. Tolaney, MD, MPH, added that, because patients were selected based on PD-L1 expression, it is unclear whether this combination therapy would show anti-tumor activity in patients with PD-L1–negative tumors. Dr. Tolaney, a medical oncologist at the Dana-Farber Cancer Institute who was not involved in the study, served as a discussant, providing her expert opinion on the findings presented by Dr. Schmid.
Promising Anti-tumor Activity
The combination of atezolizumab and sacituzumab govitecan demonstrated promising anti-tumor activity as initial treatment for this patient population. The interim analysis at 18 weeks showed an objective response rate of 76.7% (95% CI, 57.7-90.1; n = 23, including five complete responses) in the atezolizumab plus sacituzumab govitecan arm, versus 66.7% (95% CI, 29.9-92.5; n = 6, all of which were partial responses) in the control arm.
“The 66% response rate in the control arm aligns with what we see in historical data from patients treated with immunotherapy plus chemotherapy,” noted Dr. Schmid during his talk.
The clinical benefit rate, which includes complete and partial responses as well as stable disease, was also encouraging at 83.3% (95% CI, 65.3-94.4) with the dual immunotherapy regimen versus 66.7% (95% CI, 29.9-92.5) with standard therapy.
Commenting on the potential mechanisms of the synergistic effect of this combination therapy, Dr. Tolaney said, “In addition to delivering chemotherapy payloads to cancer cells, antibody-drug conjugates can lead to dendritic cell activation, T-cell activation, and immune cell infiltration.”
She added that antibody-drug conjugates can cause Fc activation in NK cells, thereby enhancing antibody-dependent cytotoxicity.
Encouraging survival trends
Interim survival data showed trends favoring atezolizumab plus sacituzumab govitecan over the control arm of atezolizumab plus nab-paclitaxel chemotherapy. The median progression-free survival (PFS) was 12.2 months (95% CI, 7.4-not estimable) in the immunotherapy combination group versus 5.9 months (95% CI, 4.1-8.7) in the control group, yielding a hazard ratio of 0.29 (95% CI, 0.11-0.70). The overall survival data are still immature.
During the discussion session, Dr. Schmid cautioned that, although the benefit of this combination therapy in terms of PFS seems promising, the validity of the hazard ratio is limited because of the small cohort size. He added, “The survival data is still immature, and longer follow-up is needed.”
These encouraging response and PFS rates need to be confirmed in larger studies of this immunotherapy combination as a potential new first-line standard for PD-L1–positive TNBC, according to Dr. Schmid.
Relationship between biomarker expression and response
The MORPHEUS-pan BC trial enrolled only patients with PD-L1–positive tumors at baseline, defined as PD-L1 expression in at least 1% of immune cells infiltrating the tumor. Tumors at baseline were also tested for Trop-2 expression, CD8 immune phenotype, and stromal tumor-infiltrating lymphocytes (TILs).
“We wanted to get an idea of whether these biomarkers are associated with treatment response,” Dr. Schmid explained during his talk.
Although the benefit of sacituzumab govitecan treatment was observed across all Trop-2 expression levels, preliminary analyses suggest that high Trop-2 expression, CD8 immune phenotype, and stromal TILs may be associated with response to atezolizumab plus sacituzumab govitecan. However, Dr. Schmid noted that validation of these associations in larger cohorts is required.
Safety of combination treatment
The side effect profile of atezolizumab plus sacituzumab govitecan appeared consistent with that expected from the two individual drugs, with no new toxicity signals.
All patients in both treatment arms experienced at least one adverse event; however, there were no fatal adverse events. Grade 3-4 adverse events were more common in the experimental arm (70.0%) than in the control arm (44.4%), while serious adverse events were more common in the control group (44.4% versus 23.3%). Immune-related adverse events were considerably more common in the atezolizumab plus sacituzumab govitecan group than in the control group (80.0% versus 55.6%).
The most common adverse events in patients treated with atezolizumab plus sacituzumab govitecan were nausea, alopecia, diarrhea, and neutropenia. Dr. Schmid emphasized in his presentation that this toxicity profile was dominated by adverse events that are common in patients treated with chemotherapy.
“These safety data are significant as they suggest that the combination therapy does not introduce additional risks beyond those already associated with each drug,” he added.
Looking Ahead
Dr. Tolaney highlighted that the cohort size of this study was small and the follow-up time was insufficient to draw conclusions about survival outcomes. Larger studies with long-term follow-up are needed to confirm the efficacy of first-line atezolizumab plus sacituzumab govitecan, she said.
“While this was a small study, the response data is very intriguing, with 17% of patients experiencing complete responses. The PFS data are also impressive, and there seems to be an interesting trend towards better response in patients with high Trop-2 expression and those with high levels of stromal TILs,” she added.
Dr. Tolaney also noted that the response rates and PFS data presented are similar to those of one of the treatment arms in the BEGONIA trial (NCT03742102), which investigated different combinations of immunotherapy in patients with metastatic TNBC. Like MORPHEUS-pan BC (NCT03424005), this study evaluated the efficacy of a different antibody-drug conjugate with chemotherapy. Patients in the study arm of the BEGONIA trial she was referring to received durvalumab (an anti-PD-L1 agent) and datopotamab deruxtecan (an antibody-drug conjugate).
Dr. Schmid said that biomarker analyses are ongoing to assess whether there is a correlation between Trop-2 expression levels and the benefits of sacituzumab govitecan. Studies are also needed to determine whether this combination can improve pathologic complete response rates in early-stage TNBC.
Dr. Tolaney echoed the importance of evaluating the efficacy of antibody-drug conjugates plus immune checkpoint inhibitors in different settings, including patients with PD-L1–negative or immunologically cold tumors and those with early-stage disease. “Ultimately, we want this combination treatment to move forward to early-stage TNBC to see if we could cure more patients,” she said, during the discussion.
Dr. Schmid reported financial relationships with Pfizer, AstraZeneca, Novartis, Gilead, Roche, Merck, MSD, BI, Seagen, Amgen, Bayer, Eisai, Celgene, Lilly, and Puma (consulting or advisory roles); Pfizer, AstraZeneca, Novartis, Gilead, Roche, Merck, MSD, BI, Seagen, Amgen, Bayer, Eisai, Celgene, Lilly, and Puma (honoraria); and AstraZeneca, Genentech, Roche, Oncogenex, Novartis, Astellas, and Medivation (research funding). Dr. Tolaney reported financial relationships with Novartis, Pfizer, Merck, Eli Lilly, AstraZeneca, Genentech/Roche, Eisai, Sanofi, Bristol Myers Squibb, Seattle Genetics, CytomX Therapeutics, Daiichi Sankyo, Gilead, Ellipses Pharma, 4D Pharma, OncoSec Medical Inc., Beyond Spring Pharmaceuticals, OncXerna, Zymeworks, Zentalis, Blueprint Medicines, Reveal Genomics, ARC Therapeutics, Infinity Therapeutics, Myovant, Zetagen, Umoja Biopharma, Menarini/Stemline, Aadi Biopharma, Bayer, and Jazz Pharmaceuticals (consulting or advisory roles); Genentech/Roche, Merck, Exelixis, Pfizer, Lilly, Novartis, Nanostring, Bristol Myers Squibb, Eisai, AstraZeneca, Gilead, Cyclacel, Sanofi, and Seattle Genetics (research funding).
FROM ESMO BREAST CANCER 2024
ART Safe for Breast Cancer Survivors with BRCA1/2 Mutations
For breast cancer survivors harboring BRCA1/2 gene mutations, the prospect of future pregnancy often raises concerns because of limited data on the safety of assisted reproductive techniques (ART) in this population. However,
“Our primary aim was to evaluate the safety profile of ART in this high-risk population by comparing maternal and fetal outcomes between those who conceived spontaneously versus those using ART,” explained Matteo Lambertini, MD, PhD, during his talk at the conference. “We found no statistically significant differences in pregnancy complications or fetal abnormalities.” Dr. Lambertini is an associate professor and medical oncologist at the University of Genova and IRCCS Policlinico San Martino Hospital, Genova, Italy.
Unmet Fertility Needs for Women With Breast Cancer
With the rising rates of early-onset breast cancer and improved survival outcomes with new therapies, the number of long-term breast cancer survivors is increasing. Fertility preservation and future reproductive choices are important considerations for young patients with breast cancer, especially for high-risk patients carrying pathogenic BRCA1/2 mutations. During his talk, Dr. Lambertini explained that defects in DNA damage repair due to BRCA1/2 mutations, in addition to chemotherapy after breast cancer diagnosis, can lead to premature menopause.
According to Dr. Lambertini, physicians face challenges in counseling these patients regarding the potential risks and benefits of pursuing pregnancy after cancer treatment because of the limited evidence available on the safety of ART in BRCA1/2 mutation carriers.
“Clinicians have to counsel BRCA carriers based on very limited data about the safety of pursuing pregnancy with ART after a breast cancer diagnosis,” he said during his presentation.
Study Design and Patient Population
The retrospective cohort study pooled data from 78 centers worldwide to explore ART outcomes in BRCA1/2 mutation carriers. The analysis included 4732 women diagnosed with stage I-III breast cancer at age 40 years or younger, all harboring a pathogenic BRCA1 or BRCA2 variant.
Among these high-risk patients, 543 became pregnant after completing cancer treatment; of these, 436 conceived naturally and 107 used ART. In the ART group, 45.5% underwent oocyte or embryo cryopreservation at breast cancer diagnosis, 33.3% underwent ovarian stimulation for in vitro fertilization after cancer treatment, and 21.2% underwent embryo transfer following oocyte donation.
Dr. Janice Tsang, MD, a clinical oncology specialist and assistant professor at the University of Hong Kong who was not involved in this study, highlighted that this is the largest study focusing on ART safety in young patients with BRCA1/2 mutations. “With over 500 BRCA1/2 mutation carriers studied across nearly 80 sites, the cohort analysis had sufficient statistical power and global representation to detect potential safety signals with ART utilization, unlike prior smaller studies,” she said. Dr. Tsang, a clinical oncology specialist and assistant professor at the University of Hong Kong who was not involved in this study, served as a discussant, providing her expert opinion on the findings presented by Dr. Lambertini.
No Increased Risks for Pregnancy and Fetal Outcomes
Although women using ART had slightly higher miscarriage rates (11.3% versus 8.8%) and lower rates of induced abortion (0.9% versus 8.3%) than women with spontaneous conceptions, the analysis revealed no statistically significant differences in the frequency of pregnancy complications, delivery complications, or congenital abnormalities between those who received ART and those who conceived naturally.
Dr. Lambertini explained that variations in baseline characteristics, such as age, may have contributed to differences in miscarriage rates.
“Patients in the ART group tended to be older at the time of conception, with a median age of 37.1 years, compared with 34.3 years in the spontaneous pregnancy group,” he said, during his presentation. Women in the ART group also more frequently had hormone receptor–positive breast cancer (43.4% versus 30.8%) and longer median time from diagnosis to conception (4.2 versus 3.3 years).
No Adverse Effects on Breast Cancer Prognosis
At a median follow-up of 5.2 years from conception, there was no detrimental effect of ART on disease-free survival for carriers of pathogenic BRCA1/2 variants who were treated for breast cancer. The ART group showed 13 (13.1%) recurrence events, compared with 118 (27.1%) recurrences in the spontaneous pregnancy group (adjusted hazard ratio, 0.72; 95% CI, 0.38-1.33; P = .147).
“The risk of cancer recurrence was comparable between those using and not using ART to become pregnant after their breast cancer diagnosis and treatment, and the small number of recurrence events in the ART group mostly involved locoregional recurrences,” Dr. Lambertini noted during his talk.
Moreover, breast cancer–specific survival and overall survival appeared to be similar between the two groups, although the small number of deaths precluded the conduction of formal analysis.
“These survival data suggest that utilizing ART does not appear to negatively impact the prognosis or course of the underlying breast cancer,” Dr. Lambertini said during the discussion.
Clinical Implications and Future Work
According to Dr. Lambertini, these results are incredibly valuable for clinicians counseling young breast cancer survivors with pathogenic BRCA1/2 mutations who wish to have biological children.
“Given the interest of patients in having their own family and for some of them in avoiding the transmission of the BRCA1/2 pathogenic variants, our results are critical in improving the oncofertility counseling of young women with breast cancer,” said Dr. Lambertini during his presentation. “We can reassure patients that pursuing ART does not appear to worsen their cancer prognosis or compromise pregnancy outcomes compared to spontaneous conceptions.”
During her discussion session, Dr. Tsang echoed the clinical implications of these findings, emphasizing that, by incorporating this evidence into clinical practice, healthcare providers can better support patients in making informed choices regarding fertility preservation and family planning after cancer treatment.
“Though this study is [retrospective] with a relatively small number, these real-world findings make a major contribution to our limited evidence base on ART safety for cancer survivors carrying BRCA1/2 mutations,” she said.
She cautioned, however, that there remain several unanswered questions and uncertainties. “We need prospective data with a larger sample size to confirm the safety of ART in this population, as well as studies to assess whether different types of ART have different safety profiles.”
Dr. Lambertini concluded his talk by saying, “While waiting for prospective studies to confirm our results, fertility preservation at diagnosis of early breast cancer should be offered to all women interested in future fertility, including BRCA carriers.”
Dr. Lambertini reported financial relationships with Roche, AstraZeneca, Lilly, Novartis, Pfizer, Exact Sciences, MSD, Seagen, Gilead, Pierre Fabre, and Menarini (consulting or advisory roles); Takeda, Roche, Lilly, Novartis, Pfizer, AstraZeneca, Sandoz, Ipsen, Libbs, Knight, Dalichi Sankyo, Gilead, Menarini (honoraria); Gilead, Daiichi Sankyo, and Roche (travel support); and Gilead (research funding to the institution). Dr. Tsang reported financial relationships with AstraZeneca, Amgen, Daichi Sankyo, Eisai, Gilead, Lilly, Lucence, Novartis, Pfizer, and Veracyte (honoraria); De Novo (consulting or advisory roles); and Pfizer (grant panel reviewer).
For breast cancer survivors harboring BRCA1/2 gene mutations, the prospect of future pregnancy often raises concerns because of limited data on the safety of assisted reproductive techniques (ART) in this population. However,
“Our primary aim was to evaluate the safety profile of ART in this high-risk population by comparing maternal and fetal outcomes between those who conceived spontaneously versus those using ART,” explained Matteo Lambertini, MD, PhD, during his talk at the conference. “We found no statistically significant differences in pregnancy complications or fetal abnormalities.” Dr. Lambertini is an associate professor and medical oncologist at the University of Genova and IRCCS Policlinico San Martino Hospital, Genova, Italy.
Unmet Fertility Needs for Women With Breast Cancer
With the rising rates of early-onset breast cancer and improved survival outcomes with new therapies, the number of long-term breast cancer survivors is increasing. Fertility preservation and future reproductive choices are important considerations for young patients with breast cancer, especially for high-risk patients carrying pathogenic BRCA1/2 mutations. During his talk, Dr. Lambertini explained that defects in DNA damage repair due to BRCA1/2 mutations, in addition to chemotherapy after breast cancer diagnosis, can lead to premature menopause.
According to Dr. Lambertini, physicians face challenges in counseling these patients regarding the potential risks and benefits of pursuing pregnancy after cancer treatment because of the limited evidence available on the safety of ART in BRCA1/2 mutation carriers.
“Clinicians have to counsel BRCA carriers based on very limited data about the safety of pursuing pregnancy with ART after a breast cancer diagnosis,” he said during his presentation.
Study Design and Patient Population
The retrospective cohort study pooled data from 78 centers worldwide to explore ART outcomes in BRCA1/2 mutation carriers. The analysis included 4732 women diagnosed with stage I-III breast cancer at age 40 years or younger, all harboring a pathogenic BRCA1 or BRCA2 variant.
Among these high-risk patients, 543 became pregnant after completing cancer treatment; of these, 436 conceived naturally and 107 used ART. In the ART group, 45.5% underwent oocyte or embryo cryopreservation at breast cancer diagnosis, 33.3% underwent ovarian stimulation for in vitro fertilization after cancer treatment, and 21.2% underwent embryo transfer following oocyte donation.
Dr. Janice Tsang, MD, a clinical oncology specialist and assistant professor at the University of Hong Kong who was not involved in this study, highlighted that this is the largest study focusing on ART safety in young patients with BRCA1/2 mutations. “With over 500 BRCA1/2 mutation carriers studied across nearly 80 sites, the cohort analysis had sufficient statistical power and global representation to detect potential safety signals with ART utilization, unlike prior smaller studies,” she said. Dr. Tsang, a clinical oncology specialist and assistant professor at the University of Hong Kong who was not involved in this study, served as a discussant, providing her expert opinion on the findings presented by Dr. Lambertini.
No Increased Risks for Pregnancy and Fetal Outcomes
Although women using ART had slightly higher miscarriage rates (11.3% versus 8.8%) and lower rates of induced abortion (0.9% versus 8.3%) than women with spontaneous conceptions, the analysis revealed no statistically significant differences in the frequency of pregnancy complications, delivery complications, or congenital abnormalities between those who received ART and those who conceived naturally.
Dr. Lambertini explained that variations in baseline characteristics, such as age, may have contributed to differences in miscarriage rates.
“Patients in the ART group tended to be older at the time of conception, with a median age of 37.1 years, compared with 34.3 years in the spontaneous pregnancy group,” he said, during his presentation. Women in the ART group also more frequently had hormone receptor–positive breast cancer (43.4% versus 30.8%) and longer median time from diagnosis to conception (4.2 versus 3.3 years).
No Adverse Effects on Breast Cancer Prognosis
At a median follow-up of 5.2 years from conception, there was no detrimental effect of ART on disease-free survival for carriers of pathogenic BRCA1/2 variants who were treated for breast cancer. The ART group showed 13 (13.1%) recurrence events, compared with 118 (27.1%) recurrences in the spontaneous pregnancy group (adjusted hazard ratio, 0.72; 95% CI, 0.38-1.33; P = .147).
“The risk of cancer recurrence was comparable between those using and not using ART to become pregnant after their breast cancer diagnosis and treatment, and the small number of recurrence events in the ART group mostly involved locoregional recurrences,” Dr. Lambertini noted during his talk.
Moreover, breast cancer–specific survival and overall survival appeared to be similar between the two groups, although the small number of deaths precluded the conduction of formal analysis.
“These survival data suggest that utilizing ART does not appear to negatively impact the prognosis or course of the underlying breast cancer,” Dr. Lambertini said during the discussion.
Clinical Implications and Future Work
According to Dr. Lambertini, these results are incredibly valuable for clinicians counseling young breast cancer survivors with pathogenic BRCA1/2 mutations who wish to have biological children.
“Given the interest of patients in having their own family and for some of them in avoiding the transmission of the BRCA1/2 pathogenic variants, our results are critical in improving the oncofertility counseling of young women with breast cancer,” said Dr. Lambertini during his presentation. “We can reassure patients that pursuing ART does not appear to worsen their cancer prognosis or compromise pregnancy outcomes compared to spontaneous conceptions.”
During her discussion session, Dr. Tsang echoed the clinical implications of these findings, emphasizing that, by incorporating this evidence into clinical practice, healthcare providers can better support patients in making informed choices regarding fertility preservation and family planning after cancer treatment.
“Though this study is [retrospective] with a relatively small number, these real-world findings make a major contribution to our limited evidence base on ART safety for cancer survivors carrying BRCA1/2 mutations,” she said.
She cautioned, however, that there remain several unanswered questions and uncertainties. “We need prospective data with a larger sample size to confirm the safety of ART in this population, as well as studies to assess whether different types of ART have different safety profiles.”
Dr. Lambertini concluded his talk by saying, “While waiting for prospective studies to confirm our results, fertility preservation at diagnosis of early breast cancer should be offered to all women interested in future fertility, including BRCA carriers.”
Dr. Lambertini reported financial relationships with Roche, AstraZeneca, Lilly, Novartis, Pfizer, Exact Sciences, MSD, Seagen, Gilead, Pierre Fabre, and Menarini (consulting or advisory roles); Takeda, Roche, Lilly, Novartis, Pfizer, AstraZeneca, Sandoz, Ipsen, Libbs, Knight, Dalichi Sankyo, Gilead, Menarini (honoraria); Gilead, Daiichi Sankyo, and Roche (travel support); and Gilead (research funding to the institution). Dr. Tsang reported financial relationships with AstraZeneca, Amgen, Daichi Sankyo, Eisai, Gilead, Lilly, Lucence, Novartis, Pfizer, and Veracyte (honoraria); De Novo (consulting or advisory roles); and Pfizer (grant panel reviewer).
For breast cancer survivors harboring BRCA1/2 gene mutations, the prospect of future pregnancy often raises concerns because of limited data on the safety of assisted reproductive techniques (ART) in this population. However,
“Our primary aim was to evaluate the safety profile of ART in this high-risk population by comparing maternal and fetal outcomes between those who conceived spontaneously versus those using ART,” explained Matteo Lambertini, MD, PhD, during his talk at the conference. “We found no statistically significant differences in pregnancy complications or fetal abnormalities.” Dr. Lambertini is an associate professor and medical oncologist at the University of Genova and IRCCS Policlinico San Martino Hospital, Genova, Italy.
Unmet Fertility Needs for Women With Breast Cancer
With the rising rates of early-onset breast cancer and improved survival outcomes with new therapies, the number of long-term breast cancer survivors is increasing. Fertility preservation and future reproductive choices are important considerations for young patients with breast cancer, especially for high-risk patients carrying pathogenic BRCA1/2 mutations. During his talk, Dr. Lambertini explained that defects in DNA damage repair due to BRCA1/2 mutations, in addition to chemotherapy after breast cancer diagnosis, can lead to premature menopause.
According to Dr. Lambertini, physicians face challenges in counseling these patients regarding the potential risks and benefits of pursuing pregnancy after cancer treatment because of the limited evidence available on the safety of ART in BRCA1/2 mutation carriers.
“Clinicians have to counsel BRCA carriers based on very limited data about the safety of pursuing pregnancy with ART after a breast cancer diagnosis,” he said during his presentation.
Study Design and Patient Population
The retrospective cohort study pooled data from 78 centers worldwide to explore ART outcomes in BRCA1/2 mutation carriers. The analysis included 4732 women diagnosed with stage I-III breast cancer at age 40 years or younger, all harboring a pathogenic BRCA1 or BRCA2 variant.
Among these high-risk patients, 543 became pregnant after completing cancer treatment; of these, 436 conceived naturally and 107 used ART. In the ART group, 45.5% underwent oocyte or embryo cryopreservation at breast cancer diagnosis, 33.3% underwent ovarian stimulation for in vitro fertilization after cancer treatment, and 21.2% underwent embryo transfer following oocyte donation.
Dr. Janice Tsang, MD, a clinical oncology specialist and assistant professor at the University of Hong Kong who was not involved in this study, highlighted that this is the largest study focusing on ART safety in young patients with BRCA1/2 mutations. “With over 500 BRCA1/2 mutation carriers studied across nearly 80 sites, the cohort analysis had sufficient statistical power and global representation to detect potential safety signals with ART utilization, unlike prior smaller studies,” she said. Dr. Tsang, a clinical oncology specialist and assistant professor at the University of Hong Kong who was not involved in this study, served as a discussant, providing her expert opinion on the findings presented by Dr. Lambertini.
No Increased Risks for Pregnancy and Fetal Outcomes
Although women using ART had slightly higher miscarriage rates (11.3% versus 8.8%) and lower rates of induced abortion (0.9% versus 8.3%) than women with spontaneous conceptions, the analysis revealed no statistically significant differences in the frequency of pregnancy complications, delivery complications, or congenital abnormalities between those who received ART and those who conceived naturally.
Dr. Lambertini explained that variations in baseline characteristics, such as age, may have contributed to differences in miscarriage rates.
“Patients in the ART group tended to be older at the time of conception, with a median age of 37.1 years, compared with 34.3 years in the spontaneous pregnancy group,” he said, during his presentation. Women in the ART group also more frequently had hormone receptor–positive breast cancer (43.4% versus 30.8%) and longer median time from diagnosis to conception (4.2 versus 3.3 years).
No Adverse Effects on Breast Cancer Prognosis
At a median follow-up of 5.2 years from conception, there was no detrimental effect of ART on disease-free survival for carriers of pathogenic BRCA1/2 variants who were treated for breast cancer. The ART group showed 13 (13.1%) recurrence events, compared with 118 (27.1%) recurrences in the spontaneous pregnancy group (adjusted hazard ratio, 0.72; 95% CI, 0.38-1.33; P = .147).
“The risk of cancer recurrence was comparable between those using and not using ART to become pregnant after their breast cancer diagnosis and treatment, and the small number of recurrence events in the ART group mostly involved locoregional recurrences,” Dr. Lambertini noted during his talk.
Moreover, breast cancer–specific survival and overall survival appeared to be similar between the two groups, although the small number of deaths precluded the conduction of formal analysis.
“These survival data suggest that utilizing ART does not appear to negatively impact the prognosis or course of the underlying breast cancer,” Dr. Lambertini said during the discussion.
Clinical Implications and Future Work
According to Dr. Lambertini, these results are incredibly valuable for clinicians counseling young breast cancer survivors with pathogenic BRCA1/2 mutations who wish to have biological children.
“Given the interest of patients in having their own family and for some of them in avoiding the transmission of the BRCA1/2 pathogenic variants, our results are critical in improving the oncofertility counseling of young women with breast cancer,” said Dr. Lambertini during his presentation. “We can reassure patients that pursuing ART does not appear to worsen their cancer prognosis or compromise pregnancy outcomes compared to spontaneous conceptions.”
During her discussion session, Dr. Tsang echoed the clinical implications of these findings, emphasizing that, by incorporating this evidence into clinical practice, healthcare providers can better support patients in making informed choices regarding fertility preservation and family planning after cancer treatment.
“Though this study is [retrospective] with a relatively small number, these real-world findings make a major contribution to our limited evidence base on ART safety for cancer survivors carrying BRCA1/2 mutations,” she said.
She cautioned, however, that there remain several unanswered questions and uncertainties. “We need prospective data with a larger sample size to confirm the safety of ART in this population, as well as studies to assess whether different types of ART have different safety profiles.”
Dr. Lambertini concluded his talk by saying, “While waiting for prospective studies to confirm our results, fertility preservation at diagnosis of early breast cancer should be offered to all women interested in future fertility, including BRCA carriers.”
Dr. Lambertini reported financial relationships with Roche, AstraZeneca, Lilly, Novartis, Pfizer, Exact Sciences, MSD, Seagen, Gilead, Pierre Fabre, and Menarini (consulting or advisory roles); Takeda, Roche, Lilly, Novartis, Pfizer, AstraZeneca, Sandoz, Ipsen, Libbs, Knight, Dalichi Sankyo, Gilead, Menarini (honoraria); Gilead, Daiichi Sankyo, and Roche (travel support); and Gilead (research funding to the institution). Dr. Tsang reported financial relationships with AstraZeneca, Amgen, Daichi Sankyo, Eisai, Gilead, Lilly, Lucence, Novartis, Pfizer, and Veracyte (honoraria); De Novo (consulting or advisory roles); and Pfizer (grant panel reviewer).
FROM ESMO BREAST CANCER 2024
FDA Approves Tarlatamab for Extensive-Stage Small Cell Lung Cancer
Tarlatamab is a first-in-class bispecific T-cell engager (BiTE) that binds delta-like ligand 3 on the surface of cells, including tumor cells, and CD3 expressed on the surface of T cells. It causes T-cell activation, release of inflammatory cytokines, and lysis of DLL3-expressing cells, according to labeling.
Approval was based on data from 99 patients in the DeLLphi-301 trial with relapsed/refractory extensive-stage SCLC who had progressed after platinum-based chemotherapy. Patients with symptomatic brain metastases, interstitial lung disease, noninfectious pneumonitis, and active immunodeficiency were excluded.
The overall response rate was 40%, and median duration of response 9.7 months. The overall response rate was 52% in 27 patients with platinum-resistant SCLC and 31% in 42 with platinum-sensitive disease.
Continued approval may depend on verification of clinical benefit in a confirmatory trial.
Labeling includes a box warning of serious or life-threatening cytokine release syndrome and neurologic toxicity, including immune effector cell–associated neurotoxicity syndrome.
The most common adverse events, occurring in 20% or more of patients, were cytokine release syndrome, fatigue, pyrexia, dysgeusia, decreased appetite, musculoskeletal pain, constipation, anemia, and nausea.
The most common grade 3 or 4 laboratory abnormalities included decreased lymphocytes, decreased sodium, increased uric acid, decreased total neutrophils, decreased hemoglobin, increased activated partial thromboplastin time, and decreased potassium.
The starting dose is 1 mg given intravenously over 1 hour on the first day of the first cycle followed by 10 mg on day 8 and day 15 of the first cycle, then every 2 weeks until disease progression or unacceptable toxicity.
M. Alexander Otto is a physician assistant with a master’s degree in medical science and a journalism degree from Newhouse. He is an award-winning medical journalist who worked for several major news outlets before joining Medscape. Alex is also an MIT Knight Science Journalism fellow. Email: [email protected]
A version of this article appeared on Medscape.com.
Tarlatamab is a first-in-class bispecific T-cell engager (BiTE) that binds delta-like ligand 3 on the surface of cells, including tumor cells, and CD3 expressed on the surface of T cells. It causes T-cell activation, release of inflammatory cytokines, and lysis of DLL3-expressing cells, according to labeling.
Approval was based on data from 99 patients in the DeLLphi-301 trial with relapsed/refractory extensive-stage SCLC who had progressed after platinum-based chemotherapy. Patients with symptomatic brain metastases, interstitial lung disease, noninfectious pneumonitis, and active immunodeficiency were excluded.
The overall response rate was 40%, and median duration of response 9.7 months. The overall response rate was 52% in 27 patients with platinum-resistant SCLC and 31% in 42 with platinum-sensitive disease.
Continued approval may depend on verification of clinical benefit in a confirmatory trial.
Labeling includes a box warning of serious or life-threatening cytokine release syndrome and neurologic toxicity, including immune effector cell–associated neurotoxicity syndrome.
The most common adverse events, occurring in 20% or more of patients, were cytokine release syndrome, fatigue, pyrexia, dysgeusia, decreased appetite, musculoskeletal pain, constipation, anemia, and nausea.
The most common grade 3 or 4 laboratory abnormalities included decreased lymphocytes, decreased sodium, increased uric acid, decreased total neutrophils, decreased hemoglobin, increased activated partial thromboplastin time, and decreased potassium.
The starting dose is 1 mg given intravenously over 1 hour on the first day of the first cycle followed by 10 mg on day 8 and day 15 of the first cycle, then every 2 weeks until disease progression or unacceptable toxicity.
M. Alexander Otto is a physician assistant with a master’s degree in medical science and a journalism degree from Newhouse. He is an award-winning medical journalist who worked for several major news outlets before joining Medscape. Alex is also an MIT Knight Science Journalism fellow. Email: [email protected]
A version of this article appeared on Medscape.com.
Tarlatamab is a first-in-class bispecific T-cell engager (BiTE) that binds delta-like ligand 3 on the surface of cells, including tumor cells, and CD3 expressed on the surface of T cells. It causes T-cell activation, release of inflammatory cytokines, and lysis of DLL3-expressing cells, according to labeling.
Approval was based on data from 99 patients in the DeLLphi-301 trial with relapsed/refractory extensive-stage SCLC who had progressed after platinum-based chemotherapy. Patients with symptomatic brain metastases, interstitial lung disease, noninfectious pneumonitis, and active immunodeficiency were excluded.
The overall response rate was 40%, and median duration of response 9.7 months. The overall response rate was 52% in 27 patients with platinum-resistant SCLC and 31% in 42 with platinum-sensitive disease.
Continued approval may depend on verification of clinical benefit in a confirmatory trial.
Labeling includes a box warning of serious or life-threatening cytokine release syndrome and neurologic toxicity, including immune effector cell–associated neurotoxicity syndrome.
The most common adverse events, occurring in 20% or more of patients, were cytokine release syndrome, fatigue, pyrexia, dysgeusia, decreased appetite, musculoskeletal pain, constipation, anemia, and nausea.
The most common grade 3 or 4 laboratory abnormalities included decreased lymphocytes, decreased sodium, increased uric acid, decreased total neutrophils, decreased hemoglobin, increased activated partial thromboplastin time, and decreased potassium.
The starting dose is 1 mg given intravenously over 1 hour on the first day of the first cycle followed by 10 mg on day 8 and day 15 of the first cycle, then every 2 weeks until disease progression or unacceptable toxicity.
M. Alexander Otto is a physician assistant with a master’s degree in medical science and a journalism degree from Newhouse. He is an award-winning medical journalist who worked for several major news outlets before joining Medscape. Alex is also an MIT Knight Science Journalism fellow. Email: [email protected]
A version of this article appeared on Medscape.com.
Chatbots Seem More Empathetic Than Docs in Cancer Discussions
Large language models (LLM) such as ChatGPT have shown mixed results in the quality of their responses to consumer questions about cancer.
One recent study found AI chatbots to churn out incomplete, inaccurate, or even nonsensical cancer treatment recommendations, while another found them to generate largely accurate — if technical — responses to the most common cancer questions.
While researchers have seen success with purpose-built chatbots created to address patient concerns about specific cancers, the consensus to date has been that the generalized models like ChatGPT remain works in progress and that physicians should avoid pointing patients to them, for now.
Yet new findings suggest that these chatbots may do better than individual physicians, at least on some measures, when it comes to answering queries about cancer. For research published May 16 in JAMA Oncology (doi: 10.1001/jamaoncol.2024.0836), David Chen, a medical student at the University of Toronto, and his colleagues, isolated a random sample of 200 questions related to cancer care addressed to doctors on the public online forum Reddit. They then compared responses from oncologists with responses generated by three different AI chatbots. The blinded responses were rated for quality, readability, and empathy by six physicians, including oncologists and palliative and supportive care specialists.
Mr. Chen and colleagues’ research was modeled after a 2023 study that measured the quality of physician responses compared with chatbots for general medicine questions addressed to doctors on Reddit. That study found that the chatbots produced more empathetic-sounding answers, something Mr. Chen’s study also found. : quality, empathy, and readability.
Q&A With Author of New Research
Mr. Chen discussed his new study’s implications during an interview with this news organization.
Question: What is novel about this study?
Mr. Chen: We’ve seen many evaluations of chatbots that test for medical accuracy, but this study occurs in the domain of oncology care, where there are unique psychosocial and emotional considerations that are not precisely reflected in a general medicine setting. In effect, this study is putting these chatbots through a harder challenge.
Question: Why would chatbot responses seem more empathetic than those of physicians?
Mr. Chen: With the physician responses that we observed in our sample data set, we saw that there was very high variation of amount of apparent effort [in the physician responses]. Some physicians would put in a lot of time and effort, thinking through their response, and others wouldn’t do so as much. These chatbots don’t face fatigue the way humans do, or burnout. So they’re able to consistently provide responses with less variation in empathy.
Question: Do chatbots just seem empathetic because they are chattier?
Mr. Chen: We did think of verbosity as a potential confounder in this study. So we set a word count limit for the chatbot responses to keep it in the range of the physician responses. That way, verbosity was no longer a significant factor.
Question: How were quality and empathy measured by the reviewers?
Mr. Chen: For our study we used two teams of readers, each team composed of three physicians. In terms of the actual metrics we used, they were pilot metrics. There are no well-defined measurement scales or checklists that we could use to measure empathy. This is an emerging field of research. So we came up by consensus with our own set of ratings, and we feel that this is an area for the research to define a standardized set of guidelines.
Another novel aspect of this study is that we separated out different dimensions of quality and empathy. A quality response didn’t just mean it was medically accurate — quality also had to do with the focus and completeness of the response.
With empathy there are cognitive and emotional dimensions. Cognitive empathy uses critical thinking to understand the person’s emotions and thoughts and then adjusting a response to fit that. A patient may not want the best medically indicated treatment for their condition, because they want to preserve their quality of life. The chatbot may be able to adjust its recommendation with consideration of some of those humanistic elements that the patient is presenting with.
Emotional empathy is more about being supportive of the patient’s emotions by using expressions like ‘I understand where you’re coming from.’ or, ‘I can see how that makes you feel.’
Question: Why would physicians, not patients, be the best evaluators of empathy?
Mr. Chen: We’re actually very interested in evaluating patient ratings of empathy. We are conducting a follow-up study that evaluates patient ratings of empathy to the same set of chatbot and physician responses,to see if there are differences.
Question: Should cancer patients go ahead and consult chatbots?
Mr. Chen: Although we did observe increases in all of the metrics compared with physicians, this is a very specialized evaluation scenario where we’re using these Reddit questions and responses.
Naturally, we would need to do a trial, a head to head randomized comparison of physicians versus chatbots.
This pilot study does highlight the promising potential of these chatbots to suggest responses. But we can’t fully recommend that they should be used as standalone clinical tools without physicians.
This Q&A was edited for clarity.
Large language models (LLM) such as ChatGPT have shown mixed results in the quality of their responses to consumer questions about cancer.
One recent study found AI chatbots to churn out incomplete, inaccurate, or even nonsensical cancer treatment recommendations, while another found them to generate largely accurate — if technical — responses to the most common cancer questions.
While researchers have seen success with purpose-built chatbots created to address patient concerns about specific cancers, the consensus to date has been that the generalized models like ChatGPT remain works in progress and that physicians should avoid pointing patients to them, for now.
Yet new findings suggest that these chatbots may do better than individual physicians, at least on some measures, when it comes to answering queries about cancer. For research published May 16 in JAMA Oncology (doi: 10.1001/jamaoncol.2024.0836), David Chen, a medical student at the University of Toronto, and his colleagues, isolated a random sample of 200 questions related to cancer care addressed to doctors on the public online forum Reddit. They then compared responses from oncologists with responses generated by three different AI chatbots. The blinded responses were rated for quality, readability, and empathy by six physicians, including oncologists and palliative and supportive care specialists.
Mr. Chen and colleagues’ research was modeled after a 2023 study that measured the quality of physician responses compared with chatbots for general medicine questions addressed to doctors on Reddit. That study found that the chatbots produced more empathetic-sounding answers, something Mr. Chen’s study also found. : quality, empathy, and readability.
Q&A With Author of New Research
Mr. Chen discussed his new study’s implications during an interview with this news organization.
Question: What is novel about this study?
Mr. Chen: We’ve seen many evaluations of chatbots that test for medical accuracy, but this study occurs in the domain of oncology care, where there are unique psychosocial and emotional considerations that are not precisely reflected in a general medicine setting. In effect, this study is putting these chatbots through a harder challenge.
Question: Why would chatbot responses seem more empathetic than those of physicians?
Mr. Chen: With the physician responses that we observed in our sample data set, we saw that there was very high variation of amount of apparent effort [in the physician responses]. Some physicians would put in a lot of time and effort, thinking through their response, and others wouldn’t do so as much. These chatbots don’t face fatigue the way humans do, or burnout. So they’re able to consistently provide responses with less variation in empathy.
Question: Do chatbots just seem empathetic because they are chattier?
Mr. Chen: We did think of verbosity as a potential confounder in this study. So we set a word count limit for the chatbot responses to keep it in the range of the physician responses. That way, verbosity was no longer a significant factor.
Question: How were quality and empathy measured by the reviewers?
Mr. Chen: For our study we used two teams of readers, each team composed of three physicians. In terms of the actual metrics we used, they were pilot metrics. There are no well-defined measurement scales or checklists that we could use to measure empathy. This is an emerging field of research. So we came up by consensus with our own set of ratings, and we feel that this is an area for the research to define a standardized set of guidelines.
Another novel aspect of this study is that we separated out different dimensions of quality and empathy. A quality response didn’t just mean it was medically accurate — quality also had to do with the focus and completeness of the response.
With empathy there are cognitive and emotional dimensions. Cognitive empathy uses critical thinking to understand the person’s emotions and thoughts and then adjusting a response to fit that. A patient may not want the best medically indicated treatment for their condition, because they want to preserve their quality of life. The chatbot may be able to adjust its recommendation with consideration of some of those humanistic elements that the patient is presenting with.
Emotional empathy is more about being supportive of the patient’s emotions by using expressions like ‘I understand where you’re coming from.’ or, ‘I can see how that makes you feel.’
Question: Why would physicians, not patients, be the best evaluators of empathy?
Mr. Chen: We’re actually very interested in evaluating patient ratings of empathy. We are conducting a follow-up study that evaluates patient ratings of empathy to the same set of chatbot and physician responses,to see if there are differences.
Question: Should cancer patients go ahead and consult chatbots?
Mr. Chen: Although we did observe increases in all of the metrics compared with physicians, this is a very specialized evaluation scenario where we’re using these Reddit questions and responses.
Naturally, we would need to do a trial, a head to head randomized comparison of physicians versus chatbots.
This pilot study does highlight the promising potential of these chatbots to suggest responses. But we can’t fully recommend that they should be used as standalone clinical tools without physicians.
This Q&A was edited for clarity.
Large language models (LLM) such as ChatGPT have shown mixed results in the quality of their responses to consumer questions about cancer.
One recent study found AI chatbots to churn out incomplete, inaccurate, or even nonsensical cancer treatment recommendations, while another found them to generate largely accurate — if technical — responses to the most common cancer questions.
While researchers have seen success with purpose-built chatbots created to address patient concerns about specific cancers, the consensus to date has been that the generalized models like ChatGPT remain works in progress and that physicians should avoid pointing patients to them, for now.
Yet new findings suggest that these chatbots may do better than individual physicians, at least on some measures, when it comes to answering queries about cancer. For research published May 16 in JAMA Oncology (doi: 10.1001/jamaoncol.2024.0836), David Chen, a medical student at the University of Toronto, and his colleagues, isolated a random sample of 200 questions related to cancer care addressed to doctors on the public online forum Reddit. They then compared responses from oncologists with responses generated by three different AI chatbots. The blinded responses were rated for quality, readability, and empathy by six physicians, including oncologists and palliative and supportive care specialists.
Mr. Chen and colleagues’ research was modeled after a 2023 study that measured the quality of physician responses compared with chatbots for general medicine questions addressed to doctors on Reddit. That study found that the chatbots produced more empathetic-sounding answers, something Mr. Chen’s study also found. : quality, empathy, and readability.
Q&A With Author of New Research
Mr. Chen discussed his new study’s implications during an interview with this news organization.
Question: What is novel about this study?
Mr. Chen: We’ve seen many evaluations of chatbots that test for medical accuracy, but this study occurs in the domain of oncology care, where there are unique psychosocial and emotional considerations that are not precisely reflected in a general medicine setting. In effect, this study is putting these chatbots through a harder challenge.
Question: Why would chatbot responses seem more empathetic than those of physicians?
Mr. Chen: With the physician responses that we observed in our sample data set, we saw that there was very high variation of amount of apparent effort [in the physician responses]. Some physicians would put in a lot of time and effort, thinking through their response, and others wouldn’t do so as much. These chatbots don’t face fatigue the way humans do, or burnout. So they’re able to consistently provide responses with less variation in empathy.
Question: Do chatbots just seem empathetic because they are chattier?
Mr. Chen: We did think of verbosity as a potential confounder in this study. So we set a word count limit for the chatbot responses to keep it in the range of the physician responses. That way, verbosity was no longer a significant factor.
Question: How were quality and empathy measured by the reviewers?
Mr. Chen: For our study we used two teams of readers, each team composed of three physicians. In terms of the actual metrics we used, they were pilot metrics. There are no well-defined measurement scales or checklists that we could use to measure empathy. This is an emerging field of research. So we came up by consensus with our own set of ratings, and we feel that this is an area for the research to define a standardized set of guidelines.
Another novel aspect of this study is that we separated out different dimensions of quality and empathy. A quality response didn’t just mean it was medically accurate — quality also had to do with the focus and completeness of the response.
With empathy there are cognitive and emotional dimensions. Cognitive empathy uses critical thinking to understand the person’s emotions and thoughts and then adjusting a response to fit that. A patient may not want the best medically indicated treatment for their condition, because they want to preserve their quality of life. The chatbot may be able to adjust its recommendation with consideration of some of those humanistic elements that the patient is presenting with.
Emotional empathy is more about being supportive of the patient’s emotions by using expressions like ‘I understand where you’re coming from.’ or, ‘I can see how that makes you feel.’
Question: Why would physicians, not patients, be the best evaluators of empathy?
Mr. Chen: We’re actually very interested in evaluating patient ratings of empathy. We are conducting a follow-up study that evaluates patient ratings of empathy to the same set of chatbot and physician responses,to see if there are differences.
Question: Should cancer patients go ahead and consult chatbots?
Mr. Chen: Although we did observe increases in all of the metrics compared with physicians, this is a very specialized evaluation scenario where we’re using these Reddit questions and responses.
Naturally, we would need to do a trial, a head to head randomized comparison of physicians versus chatbots.
This pilot study does highlight the promising potential of these chatbots to suggest responses. But we can’t fully recommend that they should be used as standalone clinical tools without physicians.
This Q&A was edited for clarity.
FROM JAMA ONCOLOGY