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largely because of the heterogeneous nature of the disease.
“Atopic dermatitis patients have different complaints,” Jacob P. Thyssen, MD, PhD, said during the Revolutionizing Atopic Dermatitis symposium. “Some of them have repeated infections. Some have psychiatric symptoms. Others have widespread eczema. When you talk about how well they work, it really depends on what aspects of AD, what subgroups of AD, and how well they work with comorbidities of AD.”
Baricitinib, a JAK1/JAK2 inhibitor in 2-mg and 4-mg tablets, is available in the European Union, and is under Food and Drug Administration review for AD in the United States. Two JAK1 inhibitors continue to be evaluated in AD clinical trials and are also under FDA review for AD: abrocitinib (100 mg and 200 mg) and upadacitinib (15 mg and 30 mg). None of these agents have been tested in head-to-head trials and only one (abrocitinib) has been compared with the interleukin-4 receptor–alpha antagonist dupilumab, which makes meaningful direct comparisons impossible. (Baricitinib and upadacitinib are approved for treating RA in the United States.)
In his informal assessment from clinical trial data of how these three JAK inhibitors compare with the biologic agents dupilumab and tralokinumab, with potency as an indication, Dr. Thyssen, professor of dermatology at the University of Copenhagen, observed that abrocitinib and dupilumab “are somewhere in the middle,” tralokinumab and baricitinib are “slightly weaker,” while upadacitinib is “very potent.” (Dupilumab is approved by the FDA for treating AD ages 6 and older, and tralokinumab, a fully human monoclonal antibody that binds to IL-13, is under FDA review for AD.)
However, he cautioned that making direct comparisons of these drugs is limited by differences in clinical trial designs, trial length, severity of disease at baseline, and demographics. “Placebo effects also differ between trials, and the speed of onset is different between JAK inhibitors and biologic agents. Because of this, efficacy can be difficult to assess over 12-16 weeks. That’s why long-term studies are necessary.”
It’s also tricky to compare safety signals with baricitinib, abrocitinib, and upadacitinib, “because some of them are JAK1 inhibitors; others are JAK1/JAK2 inhibitors,” he continued. “Even the molecules that inhibit JAK1 are different, so making a comparison between abrocitinib and upadacitinib requires studies that do this is in the best way and over a long period of time.”
Safety signals
Common safety signals in this drug class include nasopharyngitis, nausea, and headache. “Many of these are short lasting, meaning that patients will perhaps have a headache for a day or two and then it will be over,” said Dr. Thyssen, who is also a consultant dermatologist at Bispebjerg Hospital in Copenhagen. “This means that even though we see high proportions of safety signals, this is probably not going to limit the use of JAK inhibitors in most of our patients. Then we have an acne signal in higher proportions for abrocitinib and upadacitinib than for baricitinib, so perhaps this is related to the potency.”
There is also an increased risk for infections, including herpes zoster. “Is this a class effect?” he asked. “We see quite a bit for baricitinib, particularly when it’s used for rheumatoid arthritis. We also see it in AD patients, but we don’t know to what degree yet. We need the real-world evidence before we can make any conclusions.” Routine blood monitoring tests are also required in patients taking JAK inhibitors, because of the risk for leukopenia and effects on liver enzymes.
Then there’s the risk of deep vein thrombosis/pulmonary embolism. “This is mostly linked to baricitinib use, but is this a class effect or is it specific to baricitinib?” he asked. “We’ll have to wait and see, but I think overall, this is not something I have great fear of because we see that AD patients are young, usually with a normal [body mass index], at least in Europe. But we have to study this closely.”
From a clinical standpoint, JAK1/2 inhibitors work well on every measurable aspect of AD, he said, including eczema severity, itch, skin pain, sleep, and quality of life. “Based on conference abstracts and publications, they seem to work equally well independent of race, BMI, atopy status, age, and whether their AD is extrinsic or intrinsic,” Dr. Thyssen added. “One thing we haven’t learned from the companies is, what patients have the highest likelihood of getting a good treatment response? We don’t have good biomarkers yet, but anything the companies can do to help us identify the patients with the greatest chance of success would be so welcome.”
The best available data suggest that JAK inhibitors benefit AD patients with certain comorbidities, including inflammatory bowel disease (with upadacitinib), RA (with both baricitinib and upadacitinib), and alopecia areata (with baricitinib). “These drugs also have been shown to work well for the psychiatric symptoms of disease,” he said.
“As for patients with type 2 inflammation in the airways such as asthma and rhinitis, dupilumab works, but do the JAK inhibitors work? It’s possible from a mode of action standpoint, but we don’t know.” It also remains unclear how JAK inhibitors will fare in the treatment of chronic hand eczema and ocular surface disease, like allergic conjunctivitis, he said.
Despite the unknowns, Dr. Thyssen emphasized the promise that JAK inhibitors hold for AD patients. “We know they provide good AD control,” he said. “For some, like baricitinib, you may need to instruct the patient to use topical corticosteroids as well, but this does not seem to be necessary for upadacitinib and abrocitinib. You really have a single bullet here that will take away most of the problems for many patients, with very fast onset of action, which is important for our patients.”
Dr. Thyssen disclosed that he is a speaker, advisory board member, and/or investigator for Regeneron, Sanofi-Genzyme, Eli Lilly, Pfizer, LEO Pharma, AbbVie, and Almirall.
largely because of the heterogeneous nature of the disease.
“Atopic dermatitis patients have different complaints,” Jacob P. Thyssen, MD, PhD, said during the Revolutionizing Atopic Dermatitis symposium. “Some of them have repeated infections. Some have psychiatric symptoms. Others have widespread eczema. When you talk about how well they work, it really depends on what aspects of AD, what subgroups of AD, and how well they work with comorbidities of AD.”
Baricitinib, a JAK1/JAK2 inhibitor in 2-mg and 4-mg tablets, is available in the European Union, and is under Food and Drug Administration review for AD in the United States. Two JAK1 inhibitors continue to be evaluated in AD clinical trials and are also under FDA review for AD: abrocitinib (100 mg and 200 mg) and upadacitinib (15 mg and 30 mg). None of these agents have been tested in head-to-head trials and only one (abrocitinib) has been compared with the interleukin-4 receptor–alpha antagonist dupilumab, which makes meaningful direct comparisons impossible. (Baricitinib and upadacitinib are approved for treating RA in the United States.)
In his informal assessment from clinical trial data of how these three JAK inhibitors compare with the biologic agents dupilumab and tralokinumab, with potency as an indication, Dr. Thyssen, professor of dermatology at the University of Copenhagen, observed that abrocitinib and dupilumab “are somewhere in the middle,” tralokinumab and baricitinib are “slightly weaker,” while upadacitinib is “very potent.” (Dupilumab is approved by the FDA for treating AD ages 6 and older, and tralokinumab, a fully human monoclonal antibody that binds to IL-13, is under FDA review for AD.)
However, he cautioned that making direct comparisons of these drugs is limited by differences in clinical trial designs, trial length, severity of disease at baseline, and demographics. “Placebo effects also differ between trials, and the speed of onset is different between JAK inhibitors and biologic agents. Because of this, efficacy can be difficult to assess over 12-16 weeks. That’s why long-term studies are necessary.”
It’s also tricky to compare safety signals with baricitinib, abrocitinib, and upadacitinib, “because some of them are JAK1 inhibitors; others are JAK1/JAK2 inhibitors,” he continued. “Even the molecules that inhibit JAK1 are different, so making a comparison between abrocitinib and upadacitinib requires studies that do this is in the best way and over a long period of time.”
Safety signals
Common safety signals in this drug class include nasopharyngitis, nausea, and headache. “Many of these are short lasting, meaning that patients will perhaps have a headache for a day or two and then it will be over,” said Dr. Thyssen, who is also a consultant dermatologist at Bispebjerg Hospital in Copenhagen. “This means that even though we see high proportions of safety signals, this is probably not going to limit the use of JAK inhibitors in most of our patients. Then we have an acne signal in higher proportions for abrocitinib and upadacitinib than for baricitinib, so perhaps this is related to the potency.”
There is also an increased risk for infections, including herpes zoster. “Is this a class effect?” he asked. “We see quite a bit for baricitinib, particularly when it’s used for rheumatoid arthritis. We also see it in AD patients, but we don’t know to what degree yet. We need the real-world evidence before we can make any conclusions.” Routine blood monitoring tests are also required in patients taking JAK inhibitors, because of the risk for leukopenia and effects on liver enzymes.
Then there’s the risk of deep vein thrombosis/pulmonary embolism. “This is mostly linked to baricitinib use, but is this a class effect or is it specific to baricitinib?” he asked. “We’ll have to wait and see, but I think overall, this is not something I have great fear of because we see that AD patients are young, usually with a normal [body mass index], at least in Europe. But we have to study this closely.”
From a clinical standpoint, JAK1/2 inhibitors work well on every measurable aspect of AD, he said, including eczema severity, itch, skin pain, sleep, and quality of life. “Based on conference abstracts and publications, they seem to work equally well independent of race, BMI, atopy status, age, and whether their AD is extrinsic or intrinsic,” Dr. Thyssen added. “One thing we haven’t learned from the companies is, what patients have the highest likelihood of getting a good treatment response? We don’t have good biomarkers yet, but anything the companies can do to help us identify the patients with the greatest chance of success would be so welcome.”
The best available data suggest that JAK inhibitors benefit AD patients with certain comorbidities, including inflammatory bowel disease (with upadacitinib), RA (with both baricitinib and upadacitinib), and alopecia areata (with baricitinib). “These drugs also have been shown to work well for the psychiatric symptoms of disease,” he said.
“As for patients with type 2 inflammation in the airways such as asthma and rhinitis, dupilumab works, but do the JAK inhibitors work? It’s possible from a mode of action standpoint, but we don’t know.” It also remains unclear how JAK inhibitors will fare in the treatment of chronic hand eczema and ocular surface disease, like allergic conjunctivitis, he said.
Despite the unknowns, Dr. Thyssen emphasized the promise that JAK inhibitors hold for AD patients. “We know they provide good AD control,” he said. “For some, like baricitinib, you may need to instruct the patient to use topical corticosteroids as well, but this does not seem to be necessary for upadacitinib and abrocitinib. You really have a single bullet here that will take away most of the problems for many patients, with very fast onset of action, which is important for our patients.”
Dr. Thyssen disclosed that he is a speaker, advisory board member, and/or investigator for Regeneron, Sanofi-Genzyme, Eli Lilly, Pfizer, LEO Pharma, AbbVie, and Almirall.
largely because of the heterogeneous nature of the disease.
“Atopic dermatitis patients have different complaints,” Jacob P. Thyssen, MD, PhD, said during the Revolutionizing Atopic Dermatitis symposium. “Some of them have repeated infections. Some have psychiatric symptoms. Others have widespread eczema. When you talk about how well they work, it really depends on what aspects of AD, what subgroups of AD, and how well they work with comorbidities of AD.”
Baricitinib, a JAK1/JAK2 inhibitor in 2-mg and 4-mg tablets, is available in the European Union, and is under Food and Drug Administration review for AD in the United States. Two JAK1 inhibitors continue to be evaluated in AD clinical trials and are also under FDA review for AD: abrocitinib (100 mg and 200 mg) and upadacitinib (15 mg and 30 mg). None of these agents have been tested in head-to-head trials and only one (abrocitinib) has been compared with the interleukin-4 receptor–alpha antagonist dupilumab, which makes meaningful direct comparisons impossible. (Baricitinib and upadacitinib are approved for treating RA in the United States.)
In his informal assessment from clinical trial data of how these three JAK inhibitors compare with the biologic agents dupilumab and tralokinumab, with potency as an indication, Dr. Thyssen, professor of dermatology at the University of Copenhagen, observed that abrocitinib and dupilumab “are somewhere in the middle,” tralokinumab and baricitinib are “slightly weaker,” while upadacitinib is “very potent.” (Dupilumab is approved by the FDA for treating AD ages 6 and older, and tralokinumab, a fully human monoclonal antibody that binds to IL-13, is under FDA review for AD.)
However, he cautioned that making direct comparisons of these drugs is limited by differences in clinical trial designs, trial length, severity of disease at baseline, and demographics. “Placebo effects also differ between trials, and the speed of onset is different between JAK inhibitors and biologic agents. Because of this, efficacy can be difficult to assess over 12-16 weeks. That’s why long-term studies are necessary.”
It’s also tricky to compare safety signals with baricitinib, abrocitinib, and upadacitinib, “because some of them are JAK1 inhibitors; others are JAK1/JAK2 inhibitors,” he continued. “Even the molecules that inhibit JAK1 are different, so making a comparison between abrocitinib and upadacitinib requires studies that do this is in the best way and over a long period of time.”
Safety signals
Common safety signals in this drug class include nasopharyngitis, nausea, and headache. “Many of these are short lasting, meaning that patients will perhaps have a headache for a day or two and then it will be over,” said Dr. Thyssen, who is also a consultant dermatologist at Bispebjerg Hospital in Copenhagen. “This means that even though we see high proportions of safety signals, this is probably not going to limit the use of JAK inhibitors in most of our patients. Then we have an acne signal in higher proportions for abrocitinib and upadacitinib than for baricitinib, so perhaps this is related to the potency.”
There is also an increased risk for infections, including herpes zoster. “Is this a class effect?” he asked. “We see quite a bit for baricitinib, particularly when it’s used for rheumatoid arthritis. We also see it in AD patients, but we don’t know to what degree yet. We need the real-world evidence before we can make any conclusions.” Routine blood monitoring tests are also required in patients taking JAK inhibitors, because of the risk for leukopenia and effects on liver enzymes.
Then there’s the risk of deep vein thrombosis/pulmonary embolism. “This is mostly linked to baricitinib use, but is this a class effect or is it specific to baricitinib?” he asked. “We’ll have to wait and see, but I think overall, this is not something I have great fear of because we see that AD patients are young, usually with a normal [body mass index], at least in Europe. But we have to study this closely.”
From a clinical standpoint, JAK1/2 inhibitors work well on every measurable aspect of AD, he said, including eczema severity, itch, skin pain, sleep, and quality of life. “Based on conference abstracts and publications, they seem to work equally well independent of race, BMI, atopy status, age, and whether their AD is extrinsic or intrinsic,” Dr. Thyssen added. “One thing we haven’t learned from the companies is, what patients have the highest likelihood of getting a good treatment response? We don’t have good biomarkers yet, but anything the companies can do to help us identify the patients with the greatest chance of success would be so welcome.”
The best available data suggest that JAK inhibitors benefit AD patients with certain comorbidities, including inflammatory bowel disease (with upadacitinib), RA (with both baricitinib and upadacitinib), and alopecia areata (with baricitinib). “These drugs also have been shown to work well for the psychiatric symptoms of disease,” he said.
“As for patients with type 2 inflammation in the airways such as asthma and rhinitis, dupilumab works, but do the JAK inhibitors work? It’s possible from a mode of action standpoint, but we don’t know.” It also remains unclear how JAK inhibitors will fare in the treatment of chronic hand eczema and ocular surface disease, like allergic conjunctivitis, he said.
Despite the unknowns, Dr. Thyssen emphasized the promise that JAK inhibitors hold for AD patients. “We know they provide good AD control,” he said. “For some, like baricitinib, you may need to instruct the patient to use topical corticosteroids as well, but this does not seem to be necessary for upadacitinib and abrocitinib. You really have a single bullet here that will take away most of the problems for many patients, with very fast onset of action, which is important for our patients.”
Dr. Thyssen disclosed that he is a speaker, advisory board member, and/or investigator for Regeneron, Sanofi-Genzyme, Eli Lilly, Pfizer, LEO Pharma, AbbVie, and Almirall.
FROM REVOLUTIONIZING AD 2021