PHILADELPHIA – Structural and functional network MRI measures may predict long-term clinical worsening in patients with relapsing remitting multiple sclerosis (MS), according to a study described at the annual meeting of the American Academy of Neurology.

Neurologists do not have reliable biomarkers to predict disease evolution in the medium or long term for patients with MS. The ability to predict disease evolution accurately could aid in the choice of treatment.

Maria Assunta Rocca, MD, head of the Neuroimaging of CNS White Matter Unit, Department of Neurology, Institute of Experimental Neurology, Scientific Institute Ospedale, San Raffaele, Milan, Italy, and colleagues sought to evaluate structural and functional network MRI measures as predictors of clinical deterioration over 6.5 years. They obtained conventional, 3D, T1-weighted, diffusion-weighted MRI, and resting-state functional MRI images at baseline from 233 patients with MS and 77 healthy controls. Patients underwent a neurologic examination at baseline and after a median follow-up period of 6.5 years. At follow-up, the researchers classified patients as clinically stable or worsened, according to their change in Expanded Disability Status Scale (EDSS) score. They also evaluated conversion to secondary progressive MS among patients with relapsing remitting MS at baseline.

To identify the main large-scale resting state functional connectivity networks, Dr. Rocca and colleagues applied spatial independent component analysis to resting state functional MRI data. They applied the same technique to gray matter probability maps and fractional anisotropy maps to identify the corresponding structural gray matter and white matter networks.

At follow-up, 105 patients with MS (45%) had significant EDSS worsening. Of 157 patients with relapsing remitting MS, 26 (16%) converted to secondary progressive MS. The multivariable model, after adjustment for follow-up duration, identified baseline EDSS score (odds ratio, 1.59), normalized gray matter volume (OR, 0.99), and abnormally high baseline resting state functional connectivity of the left precentral gyrus in the sensorimotor network (OR, 1.67) as predictors of EDSS worsening. These variables remained significant after the researchers adjusted for treatment effect. Independent variables associated with conversion to secondary progressive MS included baseline EDSS score (OR, 2.8) and atrophy of gray matter networks associated with sensory (OR, 0.5) and motor (OR, 0.4) functions.

Dr. Rocca received personal compensation from Biogen Idec, Novartis, Genzyme, Sanofi-Aventis, Teva, Merck Serono, and Roche. Coauthors reported research support from Biogen, Merck Serono, Novartis, Teva, and Roche..
 

[email protected]

SOURCE: Filippi M et al. AAN 2019, Abstract S49.004.

PHILADELPHIA – Structural and functional network MRI measures may predict long-term clinical worsening in patients with relapsing remitting multiple sclerosis (MS), according to a study described at the annual meeting of the American Academy of Neurology.

Neurologists do not have reliable biomarkers to predict disease evolution in the medium or long term for patients with MS. The ability to predict disease evolution accurately could aid in the choice of treatment.

Maria Assunta Rocca, MD, head of the Neuroimaging of CNS White Matter Unit, Department of Neurology, Institute of Experimental Neurology, Scientific Institute Ospedale, San Raffaele, Milan, Italy, and colleagues sought to evaluate structural and functional network MRI measures as predictors of clinical deterioration over 6.5 years. They obtained conventional, 3D, T1-weighted, diffusion-weighted MRI, and resting-state functional MRI images at baseline from 233 patients with MS and 77 healthy controls. Patients underwent a neurologic examination at baseline and after a median follow-up period of 6.5 years. At follow-up, the researchers classified patients as clinically stable or worsened, according to their change in Expanded Disability Status Scale (EDSS) score. They also evaluated conversion to secondary progressive MS among patients with relapsing remitting MS at baseline.

To identify the main large-scale resting state functional connectivity networks, Dr. Rocca and colleagues applied spatial independent component analysis to resting state functional MRI data. They applied the same technique to gray matter probability maps and fractional anisotropy maps to identify the corresponding structural gray matter and white matter networks.

At follow-up, 105 patients with MS (45%) had significant EDSS worsening. Of 157 patients with relapsing remitting MS, 26 (16%) converted to secondary progressive MS. The multivariable model, after adjustment for follow-up duration, identified baseline EDSS score (odds ratio, 1.59), normalized gray matter volume (OR, 0.99), and abnormally high baseline resting state functional connectivity of the left precentral gyrus in the sensorimotor network (OR, 1.67) as predictors of EDSS worsening. These variables remained significant after the researchers adjusted for treatment effect. Independent variables associated with conversion to secondary progressive MS included baseline EDSS score (OR, 2.8) and atrophy of gray matter networks associated with sensory (OR, 0.5) and motor (OR, 0.4) functions.

Dr. Rocca received personal compensation from Biogen Idec, Novartis, Genzyme, Sanofi-Aventis, Teva, Merck Serono, and Roche. Coauthors reported research support from Biogen, Merck Serono, Novartis, Teva, and Roche..
 

[email protected]

SOURCE: Filippi M et al. AAN 2019, Abstract S49.004.

PHILADELPHIA – Structural and functional network MRI measures may predict long-term clinical worsening in patients with relapsing remitting multiple sclerosis (MS), according to a study described at the annual meeting of the American Academy of Neurology.

Neurologists do not have reliable biomarkers to predict disease evolution in the medium or long term for patients with MS. The ability to predict disease evolution accurately could aid in the choice of treatment.

Maria Assunta Rocca, MD, head of the Neuroimaging of CNS White Matter Unit, Department of Neurology, Institute of Experimental Neurology, Scientific Institute Ospedale, San Raffaele, Milan, Italy, and colleagues sought to evaluate structural and functional network MRI measures as predictors of clinical deterioration over 6.5 years. They obtained conventional, 3D, T1-weighted, diffusion-weighted MRI, and resting-state functional MRI images at baseline from 233 patients with MS and 77 healthy controls. Patients underwent a neurologic examination at baseline and after a median follow-up period of 6.5 years. At follow-up, the researchers classified patients as clinically stable or worsened, according to their change in Expanded Disability Status Scale (EDSS) score. They also evaluated conversion to secondary progressive MS among patients with relapsing remitting MS at baseline.

To identify the main large-scale resting state functional connectivity networks, Dr. Rocca and colleagues applied spatial independent component analysis to resting state functional MRI data. They applied the same technique to gray matter probability maps and fractional anisotropy maps to identify the corresponding structural gray matter and white matter networks.

At follow-up, 105 patients with MS (45%) had significant EDSS worsening. Of 157 patients with relapsing remitting MS, 26 (16%) converted to secondary progressive MS. The multivariable model, after adjustment for follow-up duration, identified baseline EDSS score (odds ratio, 1.59), normalized gray matter volume (OR, 0.99), and abnormally high baseline resting state functional connectivity of the left precentral gyrus in the sensorimotor network (OR, 1.67) as predictors of EDSS worsening. These variables remained significant after the researchers adjusted for treatment effect. Independent variables associated with conversion to secondary progressive MS included baseline EDSS score (OR, 2.8) and atrophy of gray matter networks associated with sensory (OR, 0.5) and motor (OR, 0.4) functions.

Dr. Rocca received personal compensation from Biogen Idec, Novartis, Genzyme, Sanofi-Aventis, Teva, Merck Serono, and Roche. Coauthors reported research support from Biogen, Merck Serono, Novartis, Teva, and Roche..
 

[email protected]

SOURCE: Filippi M et al. AAN 2019, Abstract S49.004.

NEW ORLEANS – A higher baseline average coronary peak flow velocity is an independent predictor of angina in women with symptomatic ischemia and nonobstructive coronary artery disease (INOCA), according to a new report from the WISE-CVD study.

Bruce Jancin/MDedge News

WISE-CVD (the Women’s Ischemia Syndrome Evaluation: Coronary Vascular Dysfunction) project is a National Institutes of Health–sponsored series of studies. WISE investigators have previously shown that higher baseline average peak flow velocity (BAPV) is correlated with volumetric flow and is an independent predictor of major adverse cardiovascular events. However, until now the relationship between BAPV and anginal symptoms hadn’t been investigated, Nissi S. Suppogu, MD, observed at the annual meeting of the American College of Cardiology.

She reported on 260 women with angiographically evaluated symptomatic INOCA who participated in WISE-CVD. They were divided into two groups based upon their BAPV: 123 had a BAPV of 22 cm/sec or more, and 137 had a BAPV of less than 22 cm/sec.


Women in the high BAPV group had more frequent angina as shown by their average score of 50 on that domain of the Seattle Angina Questionnaire, compared with 60 in the low-BAPV group. The high-BAPV group also had significantly worse angina-related quality of life as reflected in their lower score on that dimension of a related instrument, the Seattle Angina Questionnaire–7.

Further support for the notion that high-BAPV women with INOCA have more severe angina than those with low BAPV comes from the finding that they were significantly more likely to use nitrates (37.6% of them did so, compared with 22.6% of low-BAPV women) and ranolazine, or Ranexa (7.9% versus 1.7%). In addition, the high-BAPV patients had numerically greater usage of other antianginal agents – beta-blockers, calcium channel blockers, and ACE inhibitors or angiotensin receptor blockers – although these differences didn’t reach statistical significance, reported Dr. Suppogu of Cedars-Sinai Medical Center in Los Angeles.

She reported having no financial conflicts regarding her presentation.

[email protected]

NEW ORLEANS – A higher baseline average coronary peak flow velocity is an independent predictor of angina in women with symptomatic ischemia and nonobstructive coronary artery disease (INOCA), according to a new report from the WISE-CVD study.

Bruce Jancin/MDedge News

WISE-CVD (the Women’s Ischemia Syndrome Evaluation: Coronary Vascular Dysfunction) project is a National Institutes of Health–sponsored series of studies. WISE investigators have previously shown that higher baseline average peak flow velocity (BAPV) is correlated with volumetric flow and is an independent predictor of major adverse cardiovascular events. However, until now the relationship between BAPV and anginal symptoms hadn’t been investigated, Nissi S. Suppogu, MD, observed at the annual meeting of the American College of Cardiology.

She reported on 260 women with angiographically evaluated symptomatic INOCA who participated in WISE-CVD. They were divided into two groups based upon their BAPV: 123 had a BAPV of 22 cm/sec or more, and 137 had a BAPV of less than 22 cm/sec.


Women in the high BAPV group had more frequent angina as shown by their average score of 50 on that domain of the Seattle Angina Questionnaire, compared with 60 in the low-BAPV group. The high-BAPV group also had significantly worse angina-related quality of life as reflected in their lower score on that dimension of a related instrument, the Seattle Angina Questionnaire–7.

Further support for the notion that high-BAPV women with INOCA have more severe angina than those with low BAPV comes from the finding that they were significantly more likely to use nitrates (37.6% of them did so, compared with 22.6% of low-BAPV women) and ranolazine, or Ranexa (7.9% versus 1.7%). In addition, the high-BAPV patients had numerically greater usage of other antianginal agents – beta-blockers, calcium channel blockers, and ACE inhibitors or angiotensin receptor blockers – although these differences didn’t reach statistical significance, reported Dr. Suppogu of Cedars-Sinai Medical Center in Los Angeles.

She reported having no financial conflicts regarding her presentation.

[email protected]

NEW ORLEANS – A higher baseline average coronary peak flow velocity is an independent predictor of angina in women with symptomatic ischemia and nonobstructive coronary artery disease (INOCA), according to a new report from the WISE-CVD study.

Bruce Jancin/MDedge News

WISE-CVD (the Women’s Ischemia Syndrome Evaluation: Coronary Vascular Dysfunction) project is a National Institutes of Health–sponsored series of studies. WISE investigators have previously shown that higher baseline average peak flow velocity (BAPV) is correlated with volumetric flow and is an independent predictor of major adverse cardiovascular events. However, until now the relationship between BAPV and anginal symptoms hadn’t been investigated, Nissi S. Suppogu, MD, observed at the annual meeting of the American College of Cardiology.

She reported on 260 women with angiographically evaluated symptomatic INOCA who participated in WISE-CVD. They were divided into two groups based upon their BAPV: 123 had a BAPV of 22 cm/sec or more, and 137 had a BAPV of less than 22 cm/sec.


Women in the high BAPV group had more frequent angina as shown by their average score of 50 on that domain of the Seattle Angina Questionnaire, compared with 60 in the low-BAPV group. The high-BAPV group also had significantly worse angina-related quality of life as reflected in their lower score on that dimension of a related instrument, the Seattle Angina Questionnaire–7.

Further support for the notion that high-BAPV women with INOCA have more severe angina than those with low BAPV comes from the finding that they were significantly more likely to use nitrates (37.6% of them did so, compared with 22.6% of low-BAPV women) and ranolazine, or Ranexa (7.9% versus 1.7%). In addition, the high-BAPV patients had numerically greater usage of other antianginal agents – beta-blockers, calcium channel blockers, and ACE inhibitors or angiotensin receptor blockers – although these differences didn’t reach statistical significance, reported Dr. Suppogu of Cedars-Sinai Medical Center in Los Angeles.

She reported having no financial conflicts regarding her presentation.

[email protected]

The Diagnosis: Merkel Cell Carcinoma 

An excisional biopsy revealed that the dermis was mostly replaced by a malignant neoplastic infiltrate morphologically resembling small cell carcinoma (Figure 1). The cells had uniform hyperchromatic nuclei with fairly even chromatin and generally inconspicuous nucleoli. There was a tendency for smudgy artifacts at the periphery of the infiltrate, and the cells had relatively scant cytoplasm with slight streaming. Occasional apoptotic forms were present. Immunohistochemistry showed strong dotlike staining with cytokeratin 20 and moderate positivity with synaptophysin and chromogranin A (Figure 2). Unusually, there also was weak staining in a few tumor cells with thyroid transcription factor 1, a marker usually indicative of small cell carcinoma of the lungs that typically is negative in Merkel cell carcinoma (MCC). A second thyroid transcription factor 1 monoclonal antibody used in a double immunostain for lung adenocarcinomas was completely negative. This second antibody is more specific but less sensitive than the stand-alone version. The skin biopsy results confirmed the diagnosis of MCC. Given the patient's frailty and comorbidities, wide local excision was not performed and the patient was referred to radiation oncology. He died several months later from metastatic MCC. 

Merkel cell carcinoma is an uncommon skin malignancy that can be easily mistaken for other conditions if the clinician is not familiar with its typical presentation. It most commonly is found on the head and neck in elderly individuals, most often aged 60 to 80 years,¹ with a notable history of sun exposure and/or immunosuppression. It is an aggressive skin cancer that originally was thought to be due to pathogenic changes of Merkel cells,² which are specialized touch receptors located at the dermoepidermal junction of the skin; however, newer evidence has suggested that MCC arises from malignant changes to skin stem cells.³ It shares more characteristics with extracutaneous neuroendocrine tumors and is more aptly labeled by pathologists as a primary neuroendocrine carcinoma of the skin.⁴  

The frequency of MCC is highest in Australia, likely due to intense sun exposure, where the age-adjusted incidence rate reported in Queensland was 1.6 per 100,000 individuals from 2006 to 2010.⁵ The lowest incidence rates were reported in Finland (0.11 and 0.12 per 100,000 males and females, respectively)⁶ and Denmark (2.2 cases per million person-years).⁷ The clinical features of MCC are summarized by the mnemonic AEIOU: asymptomatic/lack of tenderness, expanding rapidly, immune suppression, older than 50 years, UV-exposed site on a person with fair skin.⁸ In a 2008 study of 195 patients, 89% of primary MCC lesions met 3 or more criteria, 32% met 4 or more criteria, and 7% met all 5 criteria.⁸  

The classic presentation of MCC is a pink-red to violaceous nodule on the head or neck in an elderly patient, but there is a need to maintain suspicion of malignancy when examining a presumed infected cystic lesion, especially when a round of antibiotics has not ameliorated the symptoms. According to Heath et al,⁸ of 106 patients treated for MCC, 56% of first clinical impressions were benign. A PubMed and Scopus search was performed with the MeSH headings Merkel cell carcinoma +/- presentation to uncover similar unusual presentations between 1970 and the present day. Merkel cell carcinoma has been misdiagnosed as seemingly benign lesions including lipoma,⁹ allergic contact dermatitis,¹⁰ and atheroma.¹¹ The differential diagnosis of MCC also includes cysts, amelanotic melanoma, basal cell carcinoma, dermatofibrosarcoma protuberans, squamous cell carcinoma, fungal kerion, leiomyosarcoma, neurothekeoma, abscesses, and cutaneous lymphoma.  

Merkel cell polyomavirus has been implicated in the malignant transformation of MCC. It is a small, human, nonenveloped, double-stranded DNA virus1 and is found in approximately 70% to 80% of MCC cases.¹² Merkel cell polyomavirus is a respiratory tract pathogen that is acquired by immunocompetent infants; it integrates itself into the host's genome and then enters a long latency period to later reactivate in immunocompromised adults.¹³ 

Wide local excision down to fascia is the mainstay of treatment of MCC, with recommended margins of 1 to 2 cm.¹⁴ Mohs micrographic surgery also can be considered.¹⁵ Similar to other neuroendocrine tumors, MCC is considered a radiosensitive tumor; radiation likely improves local control and is recommended in early-stage disease.^16,17 It also has been described as the sole treatment modality in patients who are not candidates for surgery. The role of chemotherapy is more controversial, as responses do not appear to be long-lasting but should be considered in patients with advanced disease.^14,18 There have been major advances in immunotherapy with the recent approvals of avelumab, an anti-PD-L1 inhibitor,¹⁹ and pembrolizumab,²⁰ an anti-PD-1 inhibitor, for metastatic MCC. Clinical trials for MCC using kinase inhibitors and somatostatin analogues currently are ongoing.²¹  

Several studies have demonstrated high rates of occult nodal disease in clinically node-negative patients, which has led to widespread use of sentinel lymph node biopsies^.22,23 A sentinel lymph node biopsy is recommended at the time of surgery to aid with treatment decisions and prognosis.²⁴  

Merkel cell carcinoma is highly aggressive, and more than one-third of patients die from their disease, making it twice as lethal as melanoma. Overall survival rates remain low (5-year overall survival, 0%-18%) for advanced disease.⁵ Unfortunately, progression to metastasis is common and most often occurs within 2 years of diagnosis.^17,25 Follow-up after treatment of MCC is crucial, with the 2019 National Comprehensive Cancer Network (NCCN) guidelines suggesting a physical examination with complete skin and complete lymph node examination every 3 to 6 months for 3 years and every 6 to 12 months thereafter.¹⁵ 

This case is an important reminder to include MCC in the differential diagnosis of presumed infected cysts, particularly on sun-exposed sites in elderly patients, as our patient was treated with antibiotics twice without improvement. An infected cyst with a lack of response to antibiotics should alert clinicians to the potential of malignancy.  

The Diagnosis: Merkel Cell Carcinoma 

An excisional biopsy revealed that the dermis was mostly replaced by a malignant neoplastic infiltrate morphologically resembling small cell carcinoma (Figure 1). The cells had uniform hyperchromatic nuclei with fairly even chromatin and generally inconspicuous nucleoli. There was a tendency for smudgy artifacts at the periphery of the infiltrate, and the cells had relatively scant cytoplasm with slight streaming. Occasional apoptotic forms were present. Immunohistochemistry showed strong dotlike staining with cytokeratin 20 and moderate positivity with synaptophysin and chromogranin A (Figure 2). Unusually, there also was weak staining in a few tumor cells with thyroid transcription factor 1, a marker usually indicative of small cell carcinoma of the lungs that typically is negative in Merkel cell carcinoma (MCC). A second thyroid transcription factor 1 monoclonal antibody used in a double immunostain for lung adenocarcinomas was completely negative. This second antibody is more specific but less sensitive than the stand-alone version. The skin biopsy results confirmed the diagnosis of MCC. Given the patient's frailty and comorbidities, wide local excision was not performed and the patient was referred to radiation oncology. He died several months later from metastatic MCC. 

Merkel cell carcinoma is an uncommon skin malignancy that can be easily mistaken for other conditions if the clinician is not familiar with its typical presentation. It most commonly is found on the head and neck in elderly individuals, most often aged 60 to 80 years,¹ with a notable history of sun exposure and/or immunosuppression. It is an aggressive skin cancer that originally was thought to be due to pathogenic changes of Merkel cells,² which are specialized touch receptors located at the dermoepidermal junction of the skin; however, newer evidence has suggested that MCC arises from malignant changes to skin stem cells.³ It shares more characteristics with extracutaneous neuroendocrine tumors and is more aptly labeled by pathologists as a primary neuroendocrine carcinoma of the skin.⁴  

The frequency of MCC is highest in Australia, likely due to intense sun exposure, where the age-adjusted incidence rate reported in Queensland was 1.6 per 100,000 individuals from 2006 to 2010.⁵ The lowest incidence rates were reported in Finland (0.11 and 0.12 per 100,000 males and females, respectively)⁶ and Denmark (2.2 cases per million person-years).⁷ The clinical features of MCC are summarized by the mnemonic AEIOU: asymptomatic/lack of tenderness, expanding rapidly, immune suppression, older than 50 years, UV-exposed site on a person with fair skin.⁸ In a 2008 study of 195 patients, 89% of primary MCC lesions met 3 or more criteria, 32% met 4 or more criteria, and 7% met all 5 criteria.⁸  

The classic presentation of MCC is a pink-red to violaceous nodule on the head or neck in an elderly patient, but there is a need to maintain suspicion of malignancy when examining a presumed infected cystic lesion, especially when a round of antibiotics has not ameliorated the symptoms. According to Heath et al,⁸ of 106 patients treated for MCC, 56% of first clinical impressions were benign. A PubMed and Scopus search was performed with the MeSH headings Merkel cell carcinoma +/- presentation to uncover similar unusual presentations between 1970 and the present day. Merkel cell carcinoma has been misdiagnosed as seemingly benign lesions including lipoma,⁹ allergic contact dermatitis,¹⁰ and atheroma.¹¹ The differential diagnosis of MCC also includes cysts, amelanotic melanoma, basal cell carcinoma, dermatofibrosarcoma protuberans, squamous cell carcinoma, fungal kerion, leiomyosarcoma, neurothekeoma, abscesses, and cutaneous lymphoma.  

Merkel cell polyomavirus has been implicated in the malignant transformation of MCC. It is a small, human, nonenveloped, double-stranded DNA virus1 and is found in approximately 70% to 80% of MCC cases.¹² Merkel cell polyomavirus is a respiratory tract pathogen that is acquired by immunocompetent infants; it integrates itself into the host's genome and then enters a long latency period to later reactivate in immunocompromised adults.¹³ 

Wide local excision down to fascia is the mainstay of treatment of MCC, with recommended margins of 1 to 2 cm.¹⁴ Mohs micrographic surgery also can be considered.¹⁵ Similar to other neuroendocrine tumors, MCC is considered a radiosensitive tumor; radiation likely improves local control and is recommended in early-stage disease.^16,17 It also has been described as the sole treatment modality in patients who are not candidates for surgery. The role of chemotherapy is more controversial, as responses do not appear to be long-lasting but should be considered in patients with advanced disease.^14,18 There have been major advances in immunotherapy with the recent approvals of avelumab, an anti-PD-L1 inhibitor,¹⁹ and pembrolizumab,²⁰ an anti-PD-1 inhibitor, for metastatic MCC. Clinical trials for MCC using kinase inhibitors and somatostatin analogues currently are ongoing.²¹  

Several studies have demonstrated high rates of occult nodal disease in clinically node-negative patients, which has led to widespread use of sentinel lymph node biopsies^.22,23 A sentinel lymph node biopsy is recommended at the time of surgery to aid with treatment decisions and prognosis.²⁴  

Merkel cell carcinoma is highly aggressive, and more than one-third of patients die from their disease, making it twice as lethal as melanoma. Overall survival rates remain low (5-year overall survival, 0%-18%) for advanced disease.⁵ Unfortunately, progression to metastasis is common and most often occurs within 2 years of diagnosis.^17,25 Follow-up after treatment of MCC is crucial, with the 2019 National Comprehensive Cancer Network (NCCN) guidelines suggesting a physical examination with complete skin and complete lymph node examination every 3 to 6 months for 3 years and every 6 to 12 months thereafter.¹⁵ 

This case is an important reminder to include MCC in the differential diagnosis of presumed infected cysts, particularly on sun-exposed sites in elderly patients, as our patient was treated with antibiotics twice without improvement. An infected cyst with a lack of response to antibiotics should alert clinicians to the potential of malignancy.  

The Diagnosis: Merkel Cell Carcinoma 

An excisional biopsy revealed that the dermis was mostly replaced by a malignant neoplastic infiltrate morphologically resembling small cell carcinoma (Figure 1). The cells had uniform hyperchromatic nuclei with fairly even chromatin and generally inconspicuous nucleoli. There was a tendency for smudgy artifacts at the periphery of the infiltrate, and the cells had relatively scant cytoplasm with slight streaming. Occasional apoptotic forms were present. Immunohistochemistry showed strong dotlike staining with cytokeratin 20 and moderate positivity with synaptophysin and chromogranin A (Figure 2). Unusually, there also was weak staining in a few tumor cells with thyroid transcription factor 1, a marker usually indicative of small cell carcinoma of the lungs that typically is negative in Merkel cell carcinoma (MCC). A second thyroid transcription factor 1 monoclonal antibody used in a double immunostain for lung adenocarcinomas was completely negative. This second antibody is more specific but less sensitive than the stand-alone version. The skin biopsy results confirmed the diagnosis of MCC. Given the patient's frailty and comorbidities, wide local excision was not performed and the patient was referred to radiation oncology. He died several months later from metastatic MCC. 

Merkel cell carcinoma is an uncommon skin malignancy that can be easily mistaken for other conditions if the clinician is not familiar with its typical presentation. It most commonly is found on the head and neck in elderly individuals, most often aged 60 to 80 years,¹ with a notable history of sun exposure and/or immunosuppression. It is an aggressive skin cancer that originally was thought to be due to pathogenic changes of Merkel cells,² which are specialized touch receptors located at the dermoepidermal junction of the skin; however, newer evidence has suggested that MCC arises from malignant changes to skin stem cells.³ It shares more characteristics with extracutaneous neuroendocrine tumors and is more aptly labeled by pathologists as a primary neuroendocrine carcinoma of the skin.⁴  

The frequency of MCC is highest in Australia, likely due to intense sun exposure, where the age-adjusted incidence rate reported in Queensland was 1.6 per 100,000 individuals from 2006 to 2010.⁵ The lowest incidence rates were reported in Finland (0.11 and 0.12 per 100,000 males and females, respectively)⁶ and Denmark (2.2 cases per million person-years).⁷ The clinical features of MCC are summarized by the mnemonic AEIOU: asymptomatic/lack of tenderness, expanding rapidly, immune suppression, older than 50 years, UV-exposed site on a person with fair skin.⁸ In a 2008 study of 195 patients, 89% of primary MCC lesions met 3 or more criteria, 32% met 4 or more criteria, and 7% met all 5 criteria.⁸  

The classic presentation of MCC is a pink-red to violaceous nodule on the head or neck in an elderly patient, but there is a need to maintain suspicion of malignancy when examining a presumed infected cystic lesion, especially when a round of antibiotics has not ameliorated the symptoms. According to Heath et al,⁸ of 106 patients treated for MCC, 56% of first clinical impressions were benign. A PubMed and Scopus search was performed with the MeSH headings Merkel cell carcinoma +/- presentation to uncover similar unusual presentations between 1970 and the present day. Merkel cell carcinoma has been misdiagnosed as seemingly benign lesions including lipoma,⁹ allergic contact dermatitis,¹⁰ and atheroma.¹¹ The differential diagnosis of MCC also includes cysts, amelanotic melanoma, basal cell carcinoma, dermatofibrosarcoma protuberans, squamous cell carcinoma, fungal kerion, leiomyosarcoma, neurothekeoma, abscesses, and cutaneous lymphoma.  

Merkel cell polyomavirus has been implicated in the malignant transformation of MCC. It is a small, human, nonenveloped, double-stranded DNA virus1 and is found in approximately 70% to 80% of MCC cases.¹² Merkel cell polyomavirus is a respiratory tract pathogen that is acquired by immunocompetent infants; it integrates itself into the host's genome and then enters a long latency period to later reactivate in immunocompromised adults.¹³ 

Wide local excision down to fascia is the mainstay of treatment of MCC, with recommended margins of 1 to 2 cm.¹⁴ Mohs micrographic surgery also can be considered.¹⁵ Similar to other neuroendocrine tumors, MCC is considered a radiosensitive tumor; radiation likely improves local control and is recommended in early-stage disease.^16,17 It also has been described as the sole treatment modality in patients who are not candidates for surgery. The role of chemotherapy is more controversial, as responses do not appear to be long-lasting but should be considered in patients with advanced disease.^14,18 There have been major advances in immunotherapy with the recent approvals of avelumab, an anti-PD-L1 inhibitor,¹⁹ and pembrolizumab,²⁰ an anti-PD-1 inhibitor, for metastatic MCC. Clinical trials for MCC using kinase inhibitors and somatostatin analogues currently are ongoing.²¹  

Several studies have demonstrated high rates of occult nodal disease in clinically node-negative patients, which has led to widespread use of sentinel lymph node biopsies^.22,23 A sentinel lymph node biopsy is recommended at the time of surgery to aid with treatment decisions and prognosis.²⁴  

Merkel cell carcinoma is highly aggressive, and more than one-third of patients die from their disease, making it twice as lethal as melanoma. Overall survival rates remain low (5-year overall survival, 0%-18%) for advanced disease.⁵ Unfortunately, progression to metastasis is common and most often occurs within 2 years of diagnosis.^17,25 Follow-up after treatment of MCC is crucial, with the 2019 National Comprehensive Cancer Network (NCCN) guidelines suggesting a physical examination with complete skin and complete lymph node examination every 3 to 6 months for 3 years and every 6 to 12 months thereafter.¹⁵ 

This case is an important reminder to include MCC in the differential diagnosis of presumed infected cysts, particularly on sun-exposed sites in elderly patients, as our patient was treated with antibiotics twice without improvement. An infected cyst with a lack of response to antibiotics should alert clinicians to the potential of malignancy.  

PHILADELPHIA – Ibudilast’s treatment effect in a phase 2 trial for progressive multiple sclerosis (MS) primarily was driven by patients with primary progressive MS, and not by patients with secondary progressive disease, researchers reported at the annual meeting of the American Academy of Neurology.

The difference may be related to faster atrophy rates among patients with primary progressive MS who received placebo, compared with those with secondary progressive MS who received placebo.

The finding was surprising, said Andrew Goodman, MD, professor of neurology, chief of the neuroimmunology unit, and director of the multiple sclerosis center at the University of Rochester (N.Y.). “Going into the trial, it was my bias and expectation that both primary and secondary progressive MS would behave more similarly than different.”

The trial, SPRINT-MS, included more than 250 patients with progressive MS at 28 sites. Patients were aged 18-65 years and were followed for 96 weeks. Patients had primary progressive MS (n = 134) or secondary progressive MS (n = 121) and were randomized 1:1 to ibudilast or placebo.

Ibudilast is an orally administered small molecule that has been used in Japan for approximately 30 years for asthma and other indications, Dr. Goodman said. Preclinical models suggested that the drug may have neuroprotective effects.

The trial’s primary result – a 48% slowing in the rate of whole brain atrophy as measured by brain parenchymal fraction with ibudilast – was reported last year (N Engl J Med. 2018 Aug 30;379[9]:846-55).

The present study examined whether the treatment effect of ibudilast was similar by progressive disease type using a linear mixed model analytic approach.

The group with primary progressive MS included a smaller percentage of women. Patients with secondary progressive MS had longer disease duration and more brain atrophy at baseline.

“The overall benefit which we previously reported appears to be driven by subjects with primary progressive rather than secondary progressive MS,” Dr. Goodman said. Accounting for baseline covariates did not affect this result.

Among patients who received placebo, brain atrophy in those with secondary progressive MS was 57% slower than in those with primary progressive MS. The rate of atrophy for untreated patients with primary progressive MS “was roughly twice as fast as that in the secondary progressive MS group, which we think may explain in part the differential in efficacy,” Dr. Goodman said. “These findings may impact future trial design for progressive MS.”

The SPRINT-MS trial was funded by the National Institute of Neurological Disorders and Stroke. The National Multiple Sclerosis Society and MediciNova also supported the study. Dr. Goodman reported receiving research support from pharmaceutical companies, as well as personal compensation from companies for consulting, serving on a scientific advisory board, and speaking.

[email protected]

SOURCE: Goodman A et al. AAN 2019, Abstract S12.007.

PHILADELPHIA – Ibudilast’s treatment effect in a phase 2 trial for progressive multiple sclerosis (MS) primarily was driven by patients with primary progressive MS, and not by patients with secondary progressive disease, researchers reported at the annual meeting of the American Academy of Neurology.

The difference may be related to faster atrophy rates among patients with primary progressive MS who received placebo, compared with those with secondary progressive MS who received placebo.

The finding was surprising, said Andrew Goodman, MD, professor of neurology, chief of the neuroimmunology unit, and director of the multiple sclerosis center at the University of Rochester (N.Y.). “Going into the trial, it was my bias and expectation that both primary and secondary progressive MS would behave more similarly than different.”

The trial, SPRINT-MS, included more than 250 patients with progressive MS at 28 sites. Patients were aged 18-65 years and were followed for 96 weeks. Patients had primary progressive MS (n = 134) or secondary progressive MS (n = 121) and were randomized 1:1 to ibudilast or placebo.

Ibudilast is an orally administered small molecule that has been used in Japan for approximately 30 years for asthma and other indications, Dr. Goodman said. Preclinical models suggested that the drug may have neuroprotective effects.

The trial’s primary result – a 48% slowing in the rate of whole brain atrophy as measured by brain parenchymal fraction with ibudilast – was reported last year (N Engl J Med. 2018 Aug 30;379[9]:846-55).

The present study examined whether the treatment effect of ibudilast was similar by progressive disease type using a linear mixed model analytic approach.

The group with primary progressive MS included a smaller percentage of women. Patients with secondary progressive MS had longer disease duration and more brain atrophy at baseline.

“The overall benefit which we previously reported appears to be driven by subjects with primary progressive rather than secondary progressive MS,” Dr. Goodman said. Accounting for baseline covariates did not affect this result.

Among patients who received placebo, brain atrophy in those with secondary progressive MS was 57% slower than in those with primary progressive MS. The rate of atrophy for untreated patients with primary progressive MS “was roughly twice as fast as that in the secondary progressive MS group, which we think may explain in part the differential in efficacy,” Dr. Goodman said. “These findings may impact future trial design for progressive MS.”

The SPRINT-MS trial was funded by the National Institute of Neurological Disorders and Stroke. The National Multiple Sclerosis Society and MediciNova also supported the study. Dr. Goodman reported receiving research support from pharmaceutical companies, as well as personal compensation from companies for consulting, serving on a scientific advisory board, and speaking.

[email protected]

SOURCE: Goodman A et al. AAN 2019, Abstract S12.007.

PHILADELPHIA – Ibudilast’s treatment effect in a phase 2 trial for progressive multiple sclerosis (MS) primarily was driven by patients with primary progressive MS, and not by patients with secondary progressive disease, researchers reported at the annual meeting of the American Academy of Neurology.

The difference may be related to faster atrophy rates among patients with primary progressive MS who received placebo, compared with those with secondary progressive MS who received placebo.

The finding was surprising, said Andrew Goodman, MD, professor of neurology, chief of the neuroimmunology unit, and director of the multiple sclerosis center at the University of Rochester (N.Y.). “Going into the trial, it was my bias and expectation that both primary and secondary progressive MS would behave more similarly than different.”

The trial, SPRINT-MS, included more than 250 patients with progressive MS at 28 sites. Patients were aged 18-65 years and were followed for 96 weeks. Patients had primary progressive MS (n = 134) or secondary progressive MS (n = 121) and were randomized 1:1 to ibudilast or placebo.

Ibudilast is an orally administered small molecule that has been used in Japan for approximately 30 years for asthma and other indications, Dr. Goodman said. Preclinical models suggested that the drug may have neuroprotective effects.

The trial’s primary result – a 48% slowing in the rate of whole brain atrophy as measured by brain parenchymal fraction with ibudilast – was reported last year (N Engl J Med. 2018 Aug 30;379[9]:846-55).

The present study examined whether the treatment effect of ibudilast was similar by progressive disease type using a linear mixed model analytic approach.

The group with primary progressive MS included a smaller percentage of women. Patients with secondary progressive MS had longer disease duration and more brain atrophy at baseline.

“The overall benefit which we previously reported appears to be driven by subjects with primary progressive rather than secondary progressive MS,” Dr. Goodman said. Accounting for baseline covariates did not affect this result.

Among patients who received placebo, brain atrophy in those with secondary progressive MS was 57% slower than in those with primary progressive MS. The rate of atrophy for untreated patients with primary progressive MS “was roughly twice as fast as that in the secondary progressive MS group, which we think may explain in part the differential in efficacy,” Dr. Goodman said. “These findings may impact future trial design for progressive MS.”

The SPRINT-MS trial was funded by the National Institute of Neurological Disorders and Stroke. The National Multiple Sclerosis Society and MediciNova also supported the study. Dr. Goodman reported receiving research support from pharmaceutical companies, as well as personal compensation from companies for consulting, serving on a scientific advisory board, and speaking.

[email protected]

SOURCE: Goodman A et al. AAN 2019, Abstract S12.007.

Medicare spending on pharmaceuticals is projected to increase if the Centers for Medicare & Medicaid Services finalizes changes to drug rebates in the Medicare program.

Kenishirotie/Thinkstock

The Congressional Budget Office is estimating that Medicare spending would increase by $170 billion from 2020-2029 if the rebate rule goes into effect, according to a report released May 2.

The proposed rule, issued Jan. 31, would make it illegal for drug manufacturers to pay rebates to health plans and pharmacy benefit managers in return for better formulary placement. Instead of rebates, manufacturers could offer discounts directly to beneficiaries by lowering list prices or making a payment to the pharmacy for the full amount of the negotiated discount – a chargeback. Under the proposal, a beneficiary’s cost sharing would be based on the lower list price or the price after the chargeback.

The CBO’s projected spending increases are based on the assumption that manufacturers will withhold 15% of current-law rebates, as well as increases in federal subsidies for premiums, changes in annual thresholds to beneficiary cost sharing, and the cost of implementing the chargeback system.

The agency expects premiums to rise, as many plans currently use the rebates they receive from drug companies to lower premiums across the board.

However, some beneficiaries “would pay lower prices on their prescription drugs, and for some beneficiaries, those reductions would be greater than their premium increases,” the CBO stated in its report. For beneficiaries who use few drugs or who use drugs that have no significant rebates, “the premium increase would outweigh the price reduction.”

Another reason federal spending would increase under this proposal is an expected increase in utilization that would come with the lowering of prices.

“In CBO’s estimate, the additional Part D utilization stemming from implementing the proposed rule would increase federal spending for beneficiaries who are not enrolled in the low-income subsidy program over the 2020-2029 period by a total of about 2% or $10 billion,” the report noted.

But the increase in utilization would have a net positive effect on Medicare spending for this population, as more beneficiaries followed their drug regimens resulting in lower spending for physician and hospital services under Medicare Part A and Part B by an estimated $20 billion over the same period, according to the CBO.

“On net, those effects are projected to reduce Medicare spending by $10 billion over the 2020-2029 period,” according to the report.

[email protected]

Medicare spending on pharmaceuticals is projected to increase if the Centers for Medicare & Medicaid Services finalizes changes to drug rebates in the Medicare program.

Kenishirotie/Thinkstock

The Congressional Budget Office is estimating that Medicare spending would increase by $170 billion from 2020-2029 if the rebate rule goes into effect, according to a report released May 2.

The proposed rule, issued Jan. 31, would make it illegal for drug manufacturers to pay rebates to health plans and pharmacy benefit managers in return for better formulary placement. Instead of rebates, manufacturers could offer discounts directly to beneficiaries by lowering list prices or making a payment to the pharmacy for the full amount of the negotiated discount – a chargeback. Under the proposal, a beneficiary’s cost sharing would be based on the lower list price or the price after the chargeback.

The CBO’s projected spending increases are based on the assumption that manufacturers will withhold 15% of current-law rebates, as well as increases in federal subsidies for premiums, changes in annual thresholds to beneficiary cost sharing, and the cost of implementing the chargeback system.

The agency expects premiums to rise, as many plans currently use the rebates they receive from drug companies to lower premiums across the board.

However, some beneficiaries “would pay lower prices on their prescription drugs, and for some beneficiaries, those reductions would be greater than their premium increases,” the CBO stated in its report. For beneficiaries who use few drugs or who use drugs that have no significant rebates, “the premium increase would outweigh the price reduction.”

Another reason federal spending would increase under this proposal is an expected increase in utilization that would come with the lowering of prices.

“In CBO’s estimate, the additional Part D utilization stemming from implementing the proposed rule would increase federal spending for beneficiaries who are not enrolled in the low-income subsidy program over the 2020-2029 period by a total of about 2% or $10 billion,” the report noted.

But the increase in utilization would have a net positive effect on Medicare spending for this population, as more beneficiaries followed their drug regimens resulting in lower spending for physician and hospital services under Medicare Part A and Part B by an estimated $20 billion over the same period, according to the CBO.

“On net, those effects are projected to reduce Medicare spending by $10 billion over the 2020-2029 period,” according to the report.

[email protected]

Medicare spending on pharmaceuticals is projected to increase if the Centers for Medicare & Medicaid Services finalizes changes to drug rebates in the Medicare program.

Kenishirotie/Thinkstock

The Congressional Budget Office is estimating that Medicare spending would increase by $170 billion from 2020-2029 if the rebate rule goes into effect, according to a report released May 2.

The proposed rule, issued Jan. 31, would make it illegal for drug manufacturers to pay rebates to health plans and pharmacy benefit managers in return for better formulary placement. Instead of rebates, manufacturers could offer discounts directly to beneficiaries by lowering list prices or making a payment to the pharmacy for the full amount of the negotiated discount – a chargeback. Under the proposal, a beneficiary’s cost sharing would be based on the lower list price or the price after the chargeback.

The CBO’s projected spending increases are based on the assumption that manufacturers will withhold 15% of current-law rebates, as well as increases in federal subsidies for premiums, changes in annual thresholds to beneficiary cost sharing, and the cost of implementing the chargeback system.

The agency expects premiums to rise, as many plans currently use the rebates they receive from drug companies to lower premiums across the board.

However, some beneficiaries “would pay lower prices on their prescription drugs, and for some beneficiaries, those reductions would be greater than their premium increases,” the CBO stated in its report. For beneficiaries who use few drugs or who use drugs that have no significant rebates, “the premium increase would outweigh the price reduction.”

Another reason federal spending would increase under this proposal is an expected increase in utilization that would come with the lowering of prices.

“In CBO’s estimate, the additional Part D utilization stemming from implementing the proposed rule would increase federal spending for beneficiaries who are not enrolled in the low-income subsidy program over the 2020-2029 period by a total of about 2% or $10 billion,” the report noted.

But the increase in utilization would have a net positive effect on Medicare spending for this population, as more beneficiaries followed their drug regimens resulting in lower spending for physician and hospital services under Medicare Part A and Part B by an estimated $20 billion over the same period, according to the CBO.

“On net, those effects are projected to reduce Medicare spending by $10 billion over the 2020-2029 period,” according to the report.

[email protected]

A Food and Drug Administration Advisory Committee voted that the benefit-risk profile of an inhaled treatment for cystic fibrosis merits approval of the drug – dry powder mannitol (DPM).

Mannitol is a naturally occurring sugar alcohol that is used as a low-calorie sweetener; it is generally recognized as safe when taken enterically. Inhaled DPM, marketed as Aridol, is currently approved as a bronchoprovocation agent. For the current indication, DPM is given as 10x40-mg capsules twice daily.

In a 9-7 vote, the FDA’s Pulmonary-Allergy Drugs Advisory Committee (PADAC) decided that DPM’s modest potential to improve pulmonary function in adults with cystic fibrosis (CF) outweighed a potential signal for increased exacerbations seen in clinical trials.

Chiesi USA Inc. is seeking approval of DPM for the management of cystic fibrosis to improve pulmonary function in patients 18 years of age and older in conjunction with standard therapies. It plans to market DPM as Bronchitol.

Some committee members who voted against approval, including PADAC chair David H. Au, MD, worried that DPM’s ease of use might prompt patients and caregivers to substitute it for inhaled hypertonic saline, a medication that’s more burdensome to use but has a longer track record for efficacy and safety. While hypertonic saline requires cumbersome equipment and cleaning regimens and takes 20-30 minutes to administer, DPM is administered over about 5 minutes via a series of capsules inserted into a small inhaler device.

“I was very impressed by conversations that we heard from the community that this will be viewed as a substitute drug [for hypertonic saline],” said Dr. Au, professor of medicine at the University of Washington, Seattle. “Before we make that leap of faith ... we have to better understand how it has to be used.” He also acknowledged that making the call for DPM was “challenging.”

Other committee members were reassured by the fact that DPM is approved for adult use in 35 countries; it’s been in use since 2011 in Australia for adults and children.

Some members also noted an unmet need in CF therapies and placed confidence in those treating CF patients to find ways to use DPM safely and effectively. “I’m really counting on the cystic fibrosis clinicians who do this for a living to figure out where to use this in their armamentarium,” said John M. Kelso, MD, an allergist at Scripps Clinic, San Diego.

In 2012, the initial new drug application submitted by Pharmaxis, which then held marketing rights to DPM, resulted in a “no” vote for approval from PADAC, and eventual FDA denial of approval. The initial submission was supported by two phase 3 clinical trials, 301 and 302, that included pediatric patients. In the pediatric population, there was concern for increased hemoptysis with DPM, so the FDA advised the drug’s marketers to consider seeking approval for an adult population only in its reapplication. The current submission followed a new double-blind, randomized, placebo-controlled trial, study 303, that included adults with CF aged 18 or over.

All three studies had similar designs, tracking change from baseline in forced expiratory volume in one second (FEV₁) from baseline to the end of the 26-week study period. In addition to this primary endpoint, secondary endpoints included other pulmonary function measures, as well as the number of protocol-defined pulmonary exacerbations (PDPEs). Participants also reported quality of life and symptom measures on the Cystic Fibrosis Questionnaire–Revised (CFQ-R).

In study 301, the dropout rate approached one in three participants with higher discontinuation in the intervention than the control arm, causing significant statistical problems in dealing with missing data. Thus, said the FDA’s Robert Lim, MD, though this study had positive results for FEV₁, it was not “statistically robust.”

The second study, 302, did not meet its primary endpoint, and there was “no support from secondary endpoints” for efficacy, said Dr. Lim, a clinical team leader in the FDA’s Division of Pulmonary, Allergy, and Rheumatology Products.

The current submission was also supported by a new post hoc subgroup analysis of adults in studies 301 and 302. A total of 414 patients receiving DPM and 347 receiving placebo (DPM at a nontherapeutic level) were included in the integrated analysis of patients from all three studies. Studies 301 and 302 both had open-label extension arms, allowing more patients to be included in safety data.

The problems caused by the missing data from study 301 were addressed in the design of study 303 by encouraging patients who discontinued the study drug to continue data collection efforts for the study. Dropout rates were lower overall in study 303 and balanced between arms.

Over the 26-week duration of study 303, investigators saw a statistically significant improvement in FEV₁ of about 50 mL, according to the FDA’s analysis. Post hoc analyses of studies 301 and 302 showed point estimate increases of approximately 80 mL, according to Dr. Lim.

In its presentations, Chiesi USA presented its integrated analysis of adult data from the three clinical trials. The analysis showed an increase in FEV₁ from baseline of 73 mL for the DPM group, compared with an increase of 7 mL for the control group, using an intention-to-treat population (P less than .001). The committee heard evidence that in adults with CF, pulmonary function typically decreases by 1%-3% annually.

The PDPE rate was slightly higher in the DPM group than in the control group in studies 302 and 303, but the differences were not statistically significant. These findings have a backdrop of an overall low rate of PDPEs ranging from 0.221 to 0.995 per year, according to Chiesi presenter Scott Donaldson, MD, a pulmonologist who directs the adult cystic fibrosis center at the University of North Carolina at Chapel Hill.

When looking at the subgroup of United States study participants, the DPM integrated cohort included more patients with a history of prior pulmonary exacerbations. In the DPM group, 45% of U.S. participants had at least one exacerbation in the prior year, and 20% had two or more exacerbations, compared with 38% and 14%, respectively, in the control group. Chiesi argued that this imbalance was likely responsible for the increased exacerbation rate.

The sponsor and the FDA used different imputation methods to account for missing data from the earlier studies, complicating interpretation of the potential signal for increased exacerbations.

Quality of life data were similar between groups across the studies.

In the end, the view of the “yes” voters was encapsulated by James M. Tracy, DO, an allergist in private practice in Omaha, Neb. “This is not a drug for everybody; but absolutely, it’s a drug for somebody. Ultimately we have to make that decision – I do think that we study populations, but we really take care of people.”

The FDA usually follows the recommendations of its advisory panels.

[email protected]

A Food and Drug Administration Advisory Committee voted that the benefit-risk profile of an inhaled treatment for cystic fibrosis merits approval of the drug – dry powder mannitol (DPM).

Mannitol is a naturally occurring sugar alcohol that is used as a low-calorie sweetener; it is generally recognized as safe when taken enterically. Inhaled DPM, marketed as Aridol, is currently approved as a bronchoprovocation agent. For the current indication, DPM is given as 10x40-mg capsules twice daily.

In a 9-7 vote, the FDA’s Pulmonary-Allergy Drugs Advisory Committee (PADAC) decided that DPM’s modest potential to improve pulmonary function in adults with cystic fibrosis (CF) outweighed a potential signal for increased exacerbations seen in clinical trials.

Chiesi USA Inc. is seeking approval of DPM for the management of cystic fibrosis to improve pulmonary function in patients 18 years of age and older in conjunction with standard therapies. It plans to market DPM as Bronchitol.

Some committee members who voted against approval, including PADAC chair David H. Au, MD, worried that DPM’s ease of use might prompt patients and caregivers to substitute it for inhaled hypertonic saline, a medication that’s more burdensome to use but has a longer track record for efficacy and safety. While hypertonic saline requires cumbersome equipment and cleaning regimens and takes 20-30 minutes to administer, DPM is administered over about 5 minutes via a series of capsules inserted into a small inhaler device.

“I was very impressed by conversations that we heard from the community that this will be viewed as a substitute drug [for hypertonic saline],” said Dr. Au, professor of medicine at the University of Washington, Seattle. “Before we make that leap of faith ... we have to better understand how it has to be used.” He also acknowledged that making the call for DPM was “challenging.”

Other committee members were reassured by the fact that DPM is approved for adult use in 35 countries; it’s been in use since 2011 in Australia for adults and children.

Some members also noted an unmet need in CF therapies and placed confidence in those treating CF patients to find ways to use DPM safely and effectively. “I’m really counting on the cystic fibrosis clinicians who do this for a living to figure out where to use this in their armamentarium,” said John M. Kelso, MD, an allergist at Scripps Clinic, San Diego.

In 2012, the initial new drug application submitted by Pharmaxis, which then held marketing rights to DPM, resulted in a “no” vote for approval from PADAC, and eventual FDA denial of approval. The initial submission was supported by two phase 3 clinical trials, 301 and 302, that included pediatric patients. In the pediatric population, there was concern for increased hemoptysis with DPM, so the FDA advised the drug’s marketers to consider seeking approval for an adult population only in its reapplication. The current submission followed a new double-blind, randomized, placebo-controlled trial, study 303, that included adults with CF aged 18 or over.

All three studies had similar designs, tracking change from baseline in forced expiratory volume in one second (FEV₁) from baseline to the end of the 26-week study period. In addition to this primary endpoint, secondary endpoints included other pulmonary function measures, as well as the number of protocol-defined pulmonary exacerbations (PDPEs). Participants also reported quality of life and symptom measures on the Cystic Fibrosis Questionnaire–Revised (CFQ-R).

In study 301, the dropout rate approached one in three participants with higher discontinuation in the intervention than the control arm, causing significant statistical problems in dealing with missing data. Thus, said the FDA’s Robert Lim, MD, though this study had positive results for FEV₁, it was not “statistically robust.”

The second study, 302, did not meet its primary endpoint, and there was “no support from secondary endpoints” for efficacy, said Dr. Lim, a clinical team leader in the FDA’s Division of Pulmonary, Allergy, and Rheumatology Products.

The current submission was also supported by a new post hoc subgroup analysis of adults in studies 301 and 302. A total of 414 patients receiving DPM and 347 receiving placebo (DPM at a nontherapeutic level) were included in the integrated analysis of patients from all three studies. Studies 301 and 302 both had open-label extension arms, allowing more patients to be included in safety data.

The problems caused by the missing data from study 301 were addressed in the design of study 303 by encouraging patients who discontinued the study drug to continue data collection efforts for the study. Dropout rates were lower overall in study 303 and balanced between arms.

Over the 26-week duration of study 303, investigators saw a statistically significant improvement in FEV₁ of about 50 mL, according to the FDA’s analysis. Post hoc analyses of studies 301 and 302 showed point estimate increases of approximately 80 mL, according to Dr. Lim.

In its presentations, Chiesi USA presented its integrated analysis of adult data from the three clinical trials. The analysis showed an increase in FEV₁ from baseline of 73 mL for the DPM group, compared with an increase of 7 mL for the control group, using an intention-to-treat population (P less than .001). The committee heard evidence that in adults with CF, pulmonary function typically decreases by 1%-3% annually.

The PDPE rate was slightly higher in the DPM group than in the control group in studies 302 and 303, but the differences were not statistically significant. These findings have a backdrop of an overall low rate of PDPEs ranging from 0.221 to 0.995 per year, according to Chiesi presenter Scott Donaldson, MD, a pulmonologist who directs the adult cystic fibrosis center at the University of North Carolina at Chapel Hill.

When looking at the subgroup of United States study participants, the DPM integrated cohort included more patients with a history of prior pulmonary exacerbations. In the DPM group, 45% of U.S. participants had at least one exacerbation in the prior year, and 20% had two or more exacerbations, compared with 38% and 14%, respectively, in the control group. Chiesi argued that this imbalance was likely responsible for the increased exacerbation rate.

The sponsor and the FDA used different imputation methods to account for missing data from the earlier studies, complicating interpretation of the potential signal for increased exacerbations.

Quality of life data were similar between groups across the studies.

In the end, the view of the “yes” voters was encapsulated by James M. Tracy, DO, an allergist in private practice in Omaha, Neb. “This is not a drug for everybody; but absolutely, it’s a drug for somebody. Ultimately we have to make that decision – I do think that we study populations, but we really take care of people.”

The FDA usually follows the recommendations of its advisory panels.

[email protected]

A Food and Drug Administration Advisory Committee voted that the benefit-risk profile of an inhaled treatment for cystic fibrosis merits approval of the drug – dry powder mannitol (DPM).

Mannitol is a naturally occurring sugar alcohol that is used as a low-calorie sweetener; it is generally recognized as safe when taken enterically. Inhaled DPM, marketed as Aridol, is currently approved as a bronchoprovocation agent. For the current indication, DPM is given as 10x40-mg capsules twice daily.

In a 9-7 vote, the FDA’s Pulmonary-Allergy Drugs Advisory Committee (PADAC) decided that DPM’s modest potential to improve pulmonary function in adults with cystic fibrosis (CF) outweighed a potential signal for increased exacerbations seen in clinical trials.

Chiesi USA Inc. is seeking approval of DPM for the management of cystic fibrosis to improve pulmonary function in patients 18 years of age and older in conjunction with standard therapies. It plans to market DPM as Bronchitol.

Some committee members who voted against approval, including PADAC chair David H. Au, MD, worried that DPM’s ease of use might prompt patients and caregivers to substitute it for inhaled hypertonic saline, a medication that’s more burdensome to use but has a longer track record for efficacy and safety. While hypertonic saline requires cumbersome equipment and cleaning regimens and takes 20-30 minutes to administer, DPM is administered over about 5 minutes via a series of capsules inserted into a small inhaler device.

“I was very impressed by conversations that we heard from the community that this will be viewed as a substitute drug [for hypertonic saline],” said Dr. Au, professor of medicine at the University of Washington, Seattle. “Before we make that leap of faith ... we have to better understand how it has to be used.” He also acknowledged that making the call for DPM was “challenging.”

Other committee members were reassured by the fact that DPM is approved for adult use in 35 countries; it’s been in use since 2011 in Australia for adults and children.

Some members also noted an unmet need in CF therapies and placed confidence in those treating CF patients to find ways to use DPM safely and effectively. “I’m really counting on the cystic fibrosis clinicians who do this for a living to figure out where to use this in their armamentarium,” said John M. Kelso, MD, an allergist at Scripps Clinic, San Diego.

In 2012, the initial new drug application submitted by Pharmaxis, which then held marketing rights to DPM, resulted in a “no” vote for approval from PADAC, and eventual FDA denial of approval. The initial submission was supported by two phase 3 clinical trials, 301 and 302, that included pediatric patients. In the pediatric population, there was concern for increased hemoptysis with DPM, so the FDA advised the drug’s marketers to consider seeking approval for an adult population only in its reapplication. The current submission followed a new double-blind, randomized, placebo-controlled trial, study 303, that included adults with CF aged 18 or over.

All three studies had similar designs, tracking change from baseline in forced expiratory volume in one second (FEV₁) from baseline to the end of the 26-week study period. In addition to this primary endpoint, secondary endpoints included other pulmonary function measures, as well as the number of protocol-defined pulmonary exacerbations (PDPEs). Participants also reported quality of life and symptom measures on the Cystic Fibrosis Questionnaire–Revised (CFQ-R).

In study 301, the dropout rate approached one in three participants with higher discontinuation in the intervention than the control arm, causing significant statistical problems in dealing with missing data. Thus, said the FDA’s Robert Lim, MD, though this study had positive results for FEV₁, it was not “statistically robust.”

The second study, 302, did not meet its primary endpoint, and there was “no support from secondary endpoints” for efficacy, said Dr. Lim, a clinical team leader in the FDA’s Division of Pulmonary, Allergy, and Rheumatology Products.

The current submission was also supported by a new post hoc subgroup analysis of adults in studies 301 and 302. A total of 414 patients receiving DPM and 347 receiving placebo (DPM at a nontherapeutic level) were included in the integrated analysis of patients from all three studies. Studies 301 and 302 both had open-label extension arms, allowing more patients to be included in safety data.

The problems caused by the missing data from study 301 were addressed in the design of study 303 by encouraging patients who discontinued the study drug to continue data collection efforts for the study. Dropout rates were lower overall in study 303 and balanced between arms.

Over the 26-week duration of study 303, investigators saw a statistically significant improvement in FEV₁ of about 50 mL, according to the FDA’s analysis. Post hoc analyses of studies 301 and 302 showed point estimate increases of approximately 80 mL, according to Dr. Lim.

In its presentations, Chiesi USA presented its integrated analysis of adult data from the three clinical trials. The analysis showed an increase in FEV₁ from baseline of 73 mL for the DPM group, compared with an increase of 7 mL for the control group, using an intention-to-treat population (P less than .001). The committee heard evidence that in adults with CF, pulmonary function typically decreases by 1%-3% annually.

The PDPE rate was slightly higher in the DPM group than in the control group in studies 302 and 303, but the differences were not statistically significant. These findings have a backdrop of an overall low rate of PDPEs ranging from 0.221 to 0.995 per year, according to Chiesi presenter Scott Donaldson, MD, a pulmonologist who directs the adult cystic fibrosis center at the University of North Carolina at Chapel Hill.

When looking at the subgroup of United States study participants, the DPM integrated cohort included more patients with a history of prior pulmonary exacerbations. In the DPM group, 45% of U.S. participants had at least one exacerbation in the prior year, and 20% had two or more exacerbations, compared with 38% and 14%, respectively, in the control group. Chiesi argued that this imbalance was likely responsible for the increased exacerbation rate.

The sponsor and the FDA used different imputation methods to account for missing data from the earlier studies, complicating interpretation of the potential signal for increased exacerbations.

Quality of life data were similar between groups across the studies.

In the end, the view of the “yes” voters was encapsulated by James M. Tracy, DO, an allergist in private practice in Omaha, Neb. “This is not a drug for everybody; but absolutely, it’s a drug for somebody. Ultimately we have to make that decision – I do think that we study populations, but we really take care of people.”

The FDA usually follows the recommendations of its advisory panels.

[email protected]

NEW ORLEANS – Patients who have type 2 diabetes and are taking a sodium-glucose cotransporter 2 (SGLT2) inhibitor have lower risks of heart failure hospitalization and all-cause mortality than patients on other glucose-lowering drugs regardless of whether their baseline left ventricular ejection fraction (LVEF) is preserved or reduced, based on data from a large real-world patient registry.

“The observed beneficial effects of SGLT2 inhibitors on heart failure may extend across the range of baseline ejection fractions,” Mikhail Kosiborod, MD, observed at the annual meeting of the American College of Cardiology.

This is an important new insight. The major randomized cardiovascular outcome trials that showed lower risks of heart failure hospitalization and all-cause mortality in type 2 diabetic patients on an SGLT2 inhibitor, such as EMPA-REG OUTCOME for empagliflozin (Jardiance) and CANVAS for canagliflozin (Invokana), didn’t include information on baseline LVEF. So until now it has been unclear whether the beneficial effects of the SGLT2 inhibitors preventing heart failure hospitalization vary depending upon LVEF, explained Dr. Kosiborod, a cardiologist at Saint Luke’s Mid America Heart Institute in Kansas City, Mo.

He presented an analysis drawn from the patient database kept by Maccabi Healthcare Services in Israel. The study included 5,307 patients with type 2 diabetes and an LVEF measurement recorded in their chart at the time they started on either empagliflozin or dapagliflozin (Farxiga) and an equal number of propensity-matched type 2 diabetic controls who started on other glucose-lowering drugs, most commonly an oral dipeptidyl peptidase-4 inhibitor.

During roughly 16,000 person-years of follow-up, 239 deaths occurred. Compared with patients on another glucose-lowering drug, the risk of death from all causes was reduced by 47% among patients who were on an SGLT2 inhibitor and had a baseline LVEF of 50% or greater and by 62% among the 9% of subjects who had a baseline LVEF less than 50%.

Similarly, the risk of heart failure hospitalization was reduced by 29% in SGLT2 inhibitor users with a preserved LVEF and by 27% if they had a reduced LVEF.

For the composite endpoint of heart failure hospitalization or all-cause mortality, the risk reductions associated with SGLT2 inhibitor therapy were 45% with preserved and 39% with reduced LVEF.

Session comoderator Prakash C. Deedwania, MD, noted that there are ongoing major randomized trials of various SGLT2 inhibitors in patients with known heart failure, with cardiovascular death and heart failure hospitalization as primary endpoints. He asked Dr. Kosiborod whether, given that the results of these studies aren’t in yet, he thinks clinicians should be prescribing SGLT2 inhibitors to diabetic or prediabetic patients who don’t have clinical symptoms of heart failure but may have a marker of increased risk, such as an elevated B-type natriuretic peptide.

“At least in my mind, we have more than enough evidence at this point to say that SGLT2 inhibitors are effective in preventing heart failure,” Dr. Kosiborod replied.

“Obviously, if your risk for developing a condition is higher at baseline, then the absolute benefit that you’re going to get from using an agent that’s effective in preventing that event is going to be higher and the number needed to treat is going to be lower. So if you have a patient at high risk for heart failure by whatever risk predictor you’re using and the patient doesn’t yet have heart failure but does have diabetes, which is already a risk factor for heart failure, I think we have pretty solid data now that SGLT2 inhibitors will likely be effective in preventing heart failure in that kind of patient population. But I don’t think we have definitive data at this point to say that the drugs are effective in treating heart failure in people who already have a manifest clinical syndrome of heart failure, which is why we’re doing all these clinical trials now,” he continued.

Dr. Deedwania urged audience members to make the effort to become comfortable in prescribing SGLT2 inhibitors for their patients with type 2 diabetes.

“Many different surveys show that these drugs are not being utilized effectively by cardiologists,” noted Dr. Deedwania, professor of medicine at the University of California, San Francisco, and director of the heart failure program at the university’s Fresno campus.

“As cardiologists, we may not want to own diabetes, but we at least have to feel that we have the ownership of treating the diabetic patient with cardiovascular disease with appropriate drugs. We don’t need to depend on endocrinologists because if we do these patients may become lost,” he said.

Dr. Kosiborod concurred, citing evidence that diabetic patients with cardiovascular disease are much more likely to see a cardiologist than an endocrinologist in the course of usual care.

“There’s definitely a golden opportunity here to intervene to reduce risk,” he said.

Dr. Kosiborod reported serving as a consultant to roughly a dozen pharmaceutical companies.
 

[email protected]

SOURCE: Kosiborod M. ACC 19, Abstract #1024-07.

NEW ORLEANS – Patients who have type 2 diabetes and are taking a sodium-glucose cotransporter 2 (SGLT2) inhibitor have lower risks of heart failure hospitalization and all-cause mortality than patients on other glucose-lowering drugs regardless of whether their baseline left ventricular ejection fraction (LVEF) is preserved or reduced, based on data from a large real-world patient registry.

“The observed beneficial effects of SGLT2 inhibitors on heart failure may extend across the range of baseline ejection fractions,” Mikhail Kosiborod, MD, observed at the annual meeting of the American College of Cardiology.

This is an important new insight. The major randomized cardiovascular outcome trials that showed lower risks of heart failure hospitalization and all-cause mortality in type 2 diabetic patients on an SGLT2 inhibitor, such as EMPA-REG OUTCOME for empagliflozin (Jardiance) and CANVAS for canagliflozin (Invokana), didn’t include information on baseline LVEF. So until now it has been unclear whether the beneficial effects of the SGLT2 inhibitors preventing heart failure hospitalization vary depending upon LVEF, explained Dr. Kosiborod, a cardiologist at Saint Luke’s Mid America Heart Institute in Kansas City, Mo.

He presented an analysis drawn from the patient database kept by Maccabi Healthcare Services in Israel. The study included 5,307 patients with type 2 diabetes and an LVEF measurement recorded in their chart at the time they started on either empagliflozin or dapagliflozin (Farxiga) and an equal number of propensity-matched type 2 diabetic controls who started on other glucose-lowering drugs, most commonly an oral dipeptidyl peptidase-4 inhibitor.

During roughly 16,000 person-years of follow-up, 239 deaths occurred. Compared with patients on another glucose-lowering drug, the risk of death from all causes was reduced by 47% among patients who were on an SGLT2 inhibitor and had a baseline LVEF of 50% or greater and by 62% among the 9% of subjects who had a baseline LVEF less than 50%.

Similarly, the risk of heart failure hospitalization was reduced by 29% in SGLT2 inhibitor users with a preserved LVEF and by 27% if they had a reduced LVEF.

For the composite endpoint of heart failure hospitalization or all-cause mortality, the risk reductions associated with SGLT2 inhibitor therapy were 45% with preserved and 39% with reduced LVEF.

Session comoderator Prakash C. Deedwania, MD, noted that there are ongoing major randomized trials of various SGLT2 inhibitors in patients with known heart failure, with cardiovascular death and heart failure hospitalization as primary endpoints. He asked Dr. Kosiborod whether, given that the results of these studies aren’t in yet, he thinks clinicians should be prescribing SGLT2 inhibitors to diabetic or prediabetic patients who don’t have clinical symptoms of heart failure but may have a marker of increased risk, such as an elevated B-type natriuretic peptide.

“At least in my mind, we have more than enough evidence at this point to say that SGLT2 inhibitors are effective in preventing heart failure,” Dr. Kosiborod replied.

“Obviously, if your risk for developing a condition is higher at baseline, then the absolute benefit that you’re going to get from using an agent that’s effective in preventing that event is going to be higher and the number needed to treat is going to be lower. So if you have a patient at high risk for heart failure by whatever risk predictor you’re using and the patient doesn’t yet have heart failure but does have diabetes, which is already a risk factor for heart failure, I think we have pretty solid data now that SGLT2 inhibitors will likely be effective in preventing heart failure in that kind of patient population. But I don’t think we have definitive data at this point to say that the drugs are effective in treating heart failure in people who already have a manifest clinical syndrome of heart failure, which is why we’re doing all these clinical trials now,” he continued.

Dr. Deedwania urged audience members to make the effort to become comfortable in prescribing SGLT2 inhibitors for their patients with type 2 diabetes.

“Many different surveys show that these drugs are not being utilized effectively by cardiologists,” noted Dr. Deedwania, professor of medicine at the University of California, San Francisco, and director of the heart failure program at the university’s Fresno campus.

“As cardiologists, we may not want to own diabetes, but we at least have to feel that we have the ownership of treating the diabetic patient with cardiovascular disease with appropriate drugs. We don’t need to depend on endocrinologists because if we do these patients may become lost,” he said.

Dr. Kosiborod concurred, citing evidence that diabetic patients with cardiovascular disease are much more likely to see a cardiologist than an endocrinologist in the course of usual care.

“There’s definitely a golden opportunity here to intervene to reduce risk,” he said.

Dr. Kosiborod reported serving as a consultant to roughly a dozen pharmaceutical companies.
 

[email protected]

SOURCE: Kosiborod M. ACC 19, Abstract #1024-07.

NEW ORLEANS – Patients who have type 2 diabetes and are taking a sodium-glucose cotransporter 2 (SGLT2) inhibitor have lower risks of heart failure hospitalization and all-cause mortality than patients on other glucose-lowering drugs regardless of whether their baseline left ventricular ejection fraction (LVEF) is preserved or reduced, based on data from a large real-world patient registry.

“The observed beneficial effects of SGLT2 inhibitors on heart failure may extend across the range of baseline ejection fractions,” Mikhail Kosiborod, MD, observed at the annual meeting of the American College of Cardiology.

This is an important new insight. The major randomized cardiovascular outcome trials that showed lower risks of heart failure hospitalization and all-cause mortality in type 2 diabetic patients on an SGLT2 inhibitor, such as EMPA-REG OUTCOME for empagliflozin (Jardiance) and CANVAS for canagliflozin (Invokana), didn’t include information on baseline LVEF. So until now it has been unclear whether the beneficial effects of the SGLT2 inhibitors preventing heart failure hospitalization vary depending upon LVEF, explained Dr. Kosiborod, a cardiologist at Saint Luke’s Mid America Heart Institute in Kansas City, Mo.

He presented an analysis drawn from the patient database kept by Maccabi Healthcare Services in Israel. The study included 5,307 patients with type 2 diabetes and an LVEF measurement recorded in their chart at the time they started on either empagliflozin or dapagliflozin (Farxiga) and an equal number of propensity-matched type 2 diabetic controls who started on other glucose-lowering drugs, most commonly an oral dipeptidyl peptidase-4 inhibitor.

During roughly 16,000 person-years of follow-up, 239 deaths occurred. Compared with patients on another glucose-lowering drug, the risk of death from all causes was reduced by 47% among patients who were on an SGLT2 inhibitor and had a baseline LVEF of 50% or greater and by 62% among the 9% of subjects who had a baseline LVEF less than 50%.

Similarly, the risk of heart failure hospitalization was reduced by 29% in SGLT2 inhibitor users with a preserved LVEF and by 27% if they had a reduced LVEF.

For the composite endpoint of heart failure hospitalization or all-cause mortality, the risk reductions associated with SGLT2 inhibitor therapy were 45% with preserved and 39% with reduced LVEF.

Session comoderator Prakash C. Deedwania, MD, noted that there are ongoing major randomized trials of various SGLT2 inhibitors in patients with known heart failure, with cardiovascular death and heart failure hospitalization as primary endpoints. He asked Dr. Kosiborod whether, given that the results of these studies aren’t in yet, he thinks clinicians should be prescribing SGLT2 inhibitors to diabetic or prediabetic patients who don’t have clinical symptoms of heart failure but may have a marker of increased risk, such as an elevated B-type natriuretic peptide.

“At least in my mind, we have more than enough evidence at this point to say that SGLT2 inhibitors are effective in preventing heart failure,” Dr. Kosiborod replied.

“Obviously, if your risk for developing a condition is higher at baseline, then the absolute benefit that you’re going to get from using an agent that’s effective in preventing that event is going to be higher and the number needed to treat is going to be lower. So if you have a patient at high risk for heart failure by whatever risk predictor you’re using and the patient doesn’t yet have heart failure but does have diabetes, which is already a risk factor for heart failure, I think we have pretty solid data now that SGLT2 inhibitors will likely be effective in preventing heart failure in that kind of patient population. But I don’t think we have definitive data at this point to say that the drugs are effective in treating heart failure in people who already have a manifest clinical syndrome of heart failure, which is why we’re doing all these clinical trials now,” he continued.

Dr. Deedwania urged audience members to make the effort to become comfortable in prescribing SGLT2 inhibitors for their patients with type 2 diabetes.

“Many different surveys show that these drugs are not being utilized effectively by cardiologists,” noted Dr. Deedwania, professor of medicine at the University of California, San Francisco, and director of the heart failure program at the university’s Fresno campus.

“As cardiologists, we may not want to own diabetes, but we at least have to feel that we have the ownership of treating the diabetic patient with cardiovascular disease with appropriate drugs. We don’t need to depend on endocrinologists because if we do these patients may become lost,” he said.

Dr. Kosiborod concurred, citing evidence that diabetic patients with cardiovascular disease are much more likely to see a cardiologist than an endocrinologist in the course of usual care.

“There’s definitely a golden opportunity here to intervene to reduce risk,” he said.

Dr. Kosiborod reported serving as a consultant to roughly a dozen pharmaceutical companies.
 

[email protected]

SOURCE: Kosiborod M. ACC 19, Abstract #1024-07.

LOS ANGELES – Cardiology patients can strap on a Holter monitor for a day or two to track their heart activity and get a brief but helpful glimpse at their cardiac health. Could patients with type 2 diabetes benefit by monitoring their blood sugar for a short period? Absolutely, according to an endocrinologist who says he’s had tremendous success with the temporary use of continuous glucose monitors (CGMs) in appropriate patients.

“There’s an actionable surprise with almost every patient,” said Daniel Einhorn, MD, FACP, FACE, medical director of Scripps Whittier Diabetes Institute and clinical professor of medicine at the University of California, San Diego.

The key is to use CGM data to pinpoint glucose spikes and then quickly make adjustments, typically over a period of 2 weeks. “This is about pattern recognition. We can do [CGM] over a week, see what the pattern is, and then try to fix something. Then they come back after the second week or send [the monitor] in, and they have the problem fixed. You have a happy patient and a happy family,” said Dr. Einhorn, who spoke in a presentation at the annual scientific and clinical congress of the American Association of Clinical Endocrinologists.

He highlighted how CGM data allow patients to track their blood sugar over extended periods of time and detect patterns. The data can uncover hidden hypoglycemia and hyperglycemia, he said, and is much more useful to patients than the self-monitoring of glucose levels or hemoglobin A_1c (HbA_1c) data.

Reading the patterns, adjusting behavior

Dr. Einhorn discussed several specific cases of patients who had changed their behavior in regard to food or medicine after CGM data disclosed certain blood sugar patterns.

Often, he said, patients say they’re surprised to find their well-being improves after they make adjustments, saying something along the lines of “I didn’t feel badly, but I feel better now.” According to Dr. Einhorn, “You hear that all the time.”

For example, he said, one patient knew his blood sugar occasionally topped 200 mg/dL, but he felt all right and didn’t want to take insulin. CGM monitoring over 6 days showed the patient had continuous glucose levels well over 200 mg/dL, especially at night. The patient accepted insulin, and a few months later his HbA_1c dropped from 10.4% to 6.6%, and his blood sugar level stayed near or below the target range of 154 mg/dL.

Dr. Einhorn said the CGM data can reveal a range of problems, including:

• The “breakfast bump” after carbohydrate-heavy breakfasts of cereal, toast, and juice. “Breakfast cereal is diabolical,” he said.
• Hypoglycemia hours after exercise.
• Nocturnal hypoglycemia.
• Hypoglycemia unawareness.

Insurance coverage of the CGM device varies widely, he said, and insurers may not cover it at all in type 2 diabetes or only pay if the patient takes insulin. Fortunately, he said, the devices can be inexpensive.
 

Temporary use is not for everyone

Dr. Einhorn cautioned that temporary use of CGM is not appropriate for every patient with type 2 diabetes. “There’s absolutely a place for [permanent] monitoring for those people who have to make decisions throughout the day, especially if they are taking insulin,” he said.

And anyone with type 1 diabetes should use CGM on an ongoing basis, he emphasized. “Type 1 is a different world, a different universe,” he said.

He also noted that some patients don’t fare well on CGM, even on a temporary basis. That would include patients who hate to wear devices (possibly out of embarrassment), those who can’t manage to switch over from self-monitoring, and those who can’t manage to understand the data.

Dr. Einhorn disclosed various types of relationships with a number of drug makers, including Abbott, Boehringer Ingelheim, Novo, Sanofi, Janssen, and others.

LOS ANGELES – Cardiology patients can strap on a Holter monitor for a day or two to track their heart activity and get a brief but helpful glimpse at their cardiac health. Could patients with type 2 diabetes benefit by monitoring their blood sugar for a short period? Absolutely, according to an endocrinologist who says he’s had tremendous success with the temporary use of continuous glucose monitors (CGMs) in appropriate patients.

“There’s an actionable surprise with almost every patient,” said Daniel Einhorn, MD, FACP, FACE, medical director of Scripps Whittier Diabetes Institute and clinical professor of medicine at the University of California, San Diego.

The key is to use CGM data to pinpoint glucose spikes and then quickly make adjustments, typically over a period of 2 weeks. “This is about pattern recognition. We can do [CGM] over a week, see what the pattern is, and then try to fix something. Then they come back after the second week or send [the monitor] in, and they have the problem fixed. You have a happy patient and a happy family,” said Dr. Einhorn, who spoke in a presentation at the annual scientific and clinical congress of the American Association of Clinical Endocrinologists.

He highlighted how CGM data allow patients to track their blood sugar over extended periods of time and detect patterns. The data can uncover hidden hypoglycemia and hyperglycemia, he said, and is much more useful to patients than the self-monitoring of glucose levels or hemoglobin A_1c (HbA_1c) data.

Reading the patterns, adjusting behavior

Dr. Einhorn discussed several specific cases of patients who had changed their behavior in regard to food or medicine after CGM data disclosed certain blood sugar patterns.

Often, he said, patients say they’re surprised to find their well-being improves after they make adjustments, saying something along the lines of “I didn’t feel badly, but I feel better now.” According to Dr. Einhorn, “You hear that all the time.”

For example, he said, one patient knew his blood sugar occasionally topped 200 mg/dL, but he felt all right and didn’t want to take insulin. CGM monitoring over 6 days showed the patient had continuous glucose levels well over 200 mg/dL, especially at night. The patient accepted insulin, and a few months later his HbA_1c dropped from 10.4% to 6.6%, and his blood sugar level stayed near or below the target range of 154 mg/dL.

Dr. Einhorn said the CGM data can reveal a range of problems, including:

• The “breakfast bump” after carbohydrate-heavy breakfasts of cereal, toast, and juice. “Breakfast cereal is diabolical,” he said.
• Hypoglycemia hours after exercise.
• Nocturnal hypoglycemia.
• Hypoglycemia unawareness.

Insurance coverage of the CGM device varies widely, he said, and insurers may not cover it at all in type 2 diabetes or only pay if the patient takes insulin. Fortunately, he said, the devices can be inexpensive.
 

Temporary use is not for everyone

Dr. Einhorn cautioned that temporary use of CGM is not appropriate for every patient with type 2 diabetes. “There’s absolutely a place for [permanent] monitoring for those people who have to make decisions throughout the day, especially if they are taking insulin,” he said.

And anyone with type 1 diabetes should use CGM on an ongoing basis, he emphasized. “Type 1 is a different world, a different universe,” he said.

He also noted that some patients don’t fare well on CGM, even on a temporary basis. That would include patients who hate to wear devices (possibly out of embarrassment), those who can’t manage to switch over from self-monitoring, and those who can’t manage to understand the data.

Dr. Einhorn disclosed various types of relationships with a number of drug makers, including Abbott, Boehringer Ingelheim, Novo, Sanofi, Janssen, and others.

LOS ANGELES – Cardiology patients can strap on a Holter monitor for a day or two to track their heart activity and get a brief but helpful glimpse at their cardiac health. Could patients with type 2 diabetes benefit by monitoring their blood sugar for a short period? Absolutely, according to an endocrinologist who says he’s had tremendous success with the temporary use of continuous glucose monitors (CGMs) in appropriate patients.

“There’s an actionable surprise with almost every patient,” said Daniel Einhorn, MD, FACP, FACE, medical director of Scripps Whittier Diabetes Institute and clinical professor of medicine at the University of California, San Diego.

The key is to use CGM data to pinpoint glucose spikes and then quickly make adjustments, typically over a period of 2 weeks. “This is about pattern recognition. We can do [CGM] over a week, see what the pattern is, and then try to fix something. Then they come back after the second week or send [the monitor] in, and they have the problem fixed. You have a happy patient and a happy family,” said Dr. Einhorn, who spoke in a presentation at the annual scientific and clinical congress of the American Association of Clinical Endocrinologists.

He highlighted how CGM data allow patients to track their blood sugar over extended periods of time and detect patterns. The data can uncover hidden hypoglycemia and hyperglycemia, he said, and is much more useful to patients than the self-monitoring of glucose levels or hemoglobin A_1c (HbA_1c) data.

Reading the patterns, adjusting behavior

Dr. Einhorn discussed several specific cases of patients who had changed their behavior in regard to food or medicine after CGM data disclosed certain blood sugar patterns.

Often, he said, patients say they’re surprised to find their well-being improves after they make adjustments, saying something along the lines of “I didn’t feel badly, but I feel better now.” According to Dr. Einhorn, “You hear that all the time.”

For example, he said, one patient knew his blood sugar occasionally topped 200 mg/dL, but he felt all right and didn’t want to take insulin. CGM monitoring over 6 days showed the patient had continuous glucose levels well over 200 mg/dL, especially at night. The patient accepted insulin, and a few months later his HbA_1c dropped from 10.4% to 6.6%, and his blood sugar level stayed near or below the target range of 154 mg/dL.

Dr. Einhorn said the CGM data can reveal a range of problems, including:

• The “breakfast bump” after carbohydrate-heavy breakfasts of cereal, toast, and juice. “Breakfast cereal is diabolical,” he said.
• Hypoglycemia hours after exercise.
• Nocturnal hypoglycemia.
• Hypoglycemia unawareness.

Insurance coverage of the CGM device varies widely, he said, and insurers may not cover it at all in type 2 diabetes or only pay if the patient takes insulin. Fortunately, he said, the devices can be inexpensive.
 

Temporary use is not for everyone

Dr. Einhorn cautioned that temporary use of CGM is not appropriate for every patient with type 2 diabetes. “There’s absolutely a place for [permanent] monitoring for those people who have to make decisions throughout the day, especially if they are taking insulin,” he said.

And anyone with type 1 diabetes should use CGM on an ongoing basis, he emphasized. “Type 1 is a different world, a different universe,” he said.

He also noted that some patients don’t fare well on CGM, even on a temporary basis. That would include patients who hate to wear devices (possibly out of embarrassment), those who can’t manage to switch over from self-monitoring, and those who can’t manage to understand the data.

Dr. Einhorn disclosed various types of relationships with a number of drug makers, including Abbott, Boehringer Ingelheim, Novo, Sanofi, Janssen, and others.

Presenters

Yemisi Jones, MD; Mirna Giordano, MD

Session title

Pediatric Clinical Conundrums

Session summary

Dr. Mirna Giordano of Columbia University Irving Medical Center, New York, and Dr. Yemisi Jones of Cincinnati Children’s Hospital Medical Center, moderated the Pediatric Clinical Conundrums session at HM19. After reviewing multiple submissions, they invited four trainees to present their interesting cases.

Malignancy or infection? Dr. Jeremy Brown, a resident at the University of Louisville, presented a case of a 15-year-old male with right upper quadrant abdominal pain with associated weight loss and intermittent fevers, over the course of several weeks. CT revealed multiple liver lesions, providing concern for possible malignancy, although liver biopsy proved otherwise, with mostly liquefactive tissue and benign liver parenchyma. After a large infectious work-up ensued, the patient was diagnosed with disseminated Bartonella. He was treated with a 10-day course of azithromycin, and his symptoms resolved.

Leg blisters as an uncommon manifestation of a common childhood disease. Dr. Stefan Mammele, a resident at Kapi’olani Medical Center in Honolulu, and the University of Hawaii, presented a case of an 11-year-old boy with a painful and pruritic rash associated with multiple 5- to 10-mm tense bullae located on the patient’s bilateral lower extremities with extension to the trunk. The patient was also found to have hematuria and proteinuria. The bullae drained both serosanguinous and purulent material. Fluid culture grew group A Streptococcus and skin biopsy confirmed IgA vasculitis. Bullae are a rare characteristic of Henoch Schönlein pupura in children, but are more commonly seen as a disease manifestation in adults. The patient was treated with cefazolin, and his lesions improved over the course of several weeks with resolution of his hematuria by 6 months.

Is she crying blood? Dr. Joshua Price, a resident at Baystate Children’s Hospital in Springfield, Mass., described a 12-year-old female who presented with 7 days of left-sided hemolacria with acute vision loss and unilateral eye pain. This patient did not respond to outpatient topical steroids and antibiotics, as prescribed by ophthalmology. For this reason, she underwent further work-up and imaging. MRI of the head and orbits revealed left maxillary sinus disease. She was treated with antibiotics for acute left maxillary sinusitis and her hemolacria resolved within 24 hours. While the differential diagnosis for hemolacria is broad, rarely acute sinusitis has been reported as a cause in medical literature.

Recurrent bronchiolitis or something more? Dr. Moira Black, a resident at Children’s Memorial Hermann in Houston, presented a case of a 7-month-old female with a history of recurrent admissions for increased work of breathing believed to be secondary to viral bronchiolitis. Her first hospitalization occurred at 7 weeks of age and was complicated by spontaneous pneumothorax requiring chest tube placement. She was again hospitalized at 5 months of age with resolution of her increased work of breathing with high-flow nasal cannula. She presented again at 7 months of age with presumed bronchiolitis, however, she decompensated and required intubation on the 5th day of hospitalization. A bronchoscopy was performed and revealed a significantly narrowed left bronchus at the carina and a blind pouch on the right with notable pulsation of the walls. She underwent further imaging and was ultimately diagnosed with a left pulmonary artery sling. Left pulmonary artery slings are a rare, but potentially fatal anomaly that can present with wheezing, stridor, and recurrent respiratory infections. Patient underwent correction by cardiovascular surgery and has since been doing well.
 

Key takeaways for HM

• Bartonella is a common cause of fever of unknown origin, and should be considered in unusual presentations of febrile illnesses.

• Bullae in IgA vasculitis are rare in children and do not have prognostic value, but streptococcal infection may be a trigger for IgA vasculitis.

• Hemolacria is an atypical presentation of rare and common diagnoses that should prompt further work-up.

• Acute respiratory distress can be caused by underlying cardiac or vascular anomalies and can be mistaken for common viral illnesses.

Dr. Marsicek is a pediatric hospital medicine fellow at Johns Hopkins All Children’s Hospital, St. Petersburg, Fla. Dr. Wysocka is a pediatric resident at Johns Hopkins All Children’s Hospital.

Presenters

Yemisi Jones, MD; Mirna Giordano, MD

Session title

Pediatric Clinical Conundrums

Session summary

Dr. Mirna Giordano of Columbia University Irving Medical Center, New York, and Dr. Yemisi Jones of Cincinnati Children’s Hospital Medical Center, moderated the Pediatric Clinical Conundrums session at HM19. After reviewing multiple submissions, they invited four trainees to present their interesting cases.

Malignancy or infection? Dr. Jeremy Brown, a resident at the University of Louisville, presented a case of a 15-year-old male with right upper quadrant abdominal pain with associated weight loss and intermittent fevers, over the course of several weeks. CT revealed multiple liver lesions, providing concern for possible malignancy, although liver biopsy proved otherwise, with mostly liquefactive tissue and benign liver parenchyma. After a large infectious work-up ensued, the patient was diagnosed with disseminated Bartonella. He was treated with a 10-day course of azithromycin, and his symptoms resolved.

Leg blisters as an uncommon manifestation of a common childhood disease. Dr. Stefan Mammele, a resident at Kapi’olani Medical Center in Honolulu, and the University of Hawaii, presented a case of an 11-year-old boy with a painful and pruritic rash associated with multiple 5- to 10-mm tense bullae located on the patient’s bilateral lower extremities with extension to the trunk. The patient was also found to have hematuria and proteinuria. The bullae drained both serosanguinous and purulent material. Fluid culture grew group A Streptococcus and skin biopsy confirmed IgA vasculitis. Bullae are a rare characteristic of Henoch Schönlein pupura in children, but are more commonly seen as a disease manifestation in adults. The patient was treated with cefazolin, and his lesions improved over the course of several weeks with resolution of his hematuria by 6 months.

Is she crying blood? Dr. Joshua Price, a resident at Baystate Children’s Hospital in Springfield, Mass., described a 12-year-old female who presented with 7 days of left-sided hemolacria with acute vision loss and unilateral eye pain. This patient did not respond to outpatient topical steroids and antibiotics, as prescribed by ophthalmology. For this reason, she underwent further work-up and imaging. MRI of the head and orbits revealed left maxillary sinus disease. She was treated with antibiotics for acute left maxillary sinusitis and her hemolacria resolved within 24 hours. While the differential diagnosis for hemolacria is broad, rarely acute sinusitis has been reported as a cause in medical literature.

Recurrent bronchiolitis or something more? Dr. Moira Black, a resident at Children’s Memorial Hermann in Houston, presented a case of a 7-month-old female with a history of recurrent admissions for increased work of breathing believed to be secondary to viral bronchiolitis. Her first hospitalization occurred at 7 weeks of age and was complicated by spontaneous pneumothorax requiring chest tube placement. She was again hospitalized at 5 months of age with resolution of her increased work of breathing with high-flow nasal cannula. She presented again at 7 months of age with presumed bronchiolitis, however, she decompensated and required intubation on the 5th day of hospitalization. A bronchoscopy was performed and revealed a significantly narrowed left bronchus at the carina and a blind pouch on the right with notable pulsation of the walls. She underwent further imaging and was ultimately diagnosed with a left pulmonary artery sling. Left pulmonary artery slings are a rare, but potentially fatal anomaly that can present with wheezing, stridor, and recurrent respiratory infections. Patient underwent correction by cardiovascular surgery and has since been doing well.
 

Key takeaways for HM

• Bartonella is a common cause of fever of unknown origin, and should be considered in unusual presentations of febrile illnesses.

• Bullae in IgA vasculitis are rare in children and do not have prognostic value, but streptococcal infection may be a trigger for IgA vasculitis.

• Hemolacria is an atypical presentation of rare and common diagnoses that should prompt further work-up.

• Acute respiratory distress can be caused by underlying cardiac or vascular anomalies and can be mistaken for common viral illnesses.

Dr. Marsicek is a pediatric hospital medicine fellow at Johns Hopkins All Children’s Hospital, St. Petersburg, Fla. Dr. Wysocka is a pediatric resident at Johns Hopkins All Children’s Hospital.

Presenters

Yemisi Jones, MD; Mirna Giordano, MD

Session title

Pediatric Clinical Conundrums

Session summary

Dr. Mirna Giordano of Columbia University Irving Medical Center, New York, and Dr. Yemisi Jones of Cincinnati Children’s Hospital Medical Center, moderated the Pediatric Clinical Conundrums session at HM19. After reviewing multiple submissions, they invited four trainees to present their interesting cases.

Malignancy or infection? Dr. Jeremy Brown, a resident at the University of Louisville, presented a case of a 15-year-old male with right upper quadrant abdominal pain with associated weight loss and intermittent fevers, over the course of several weeks. CT revealed multiple liver lesions, providing concern for possible malignancy, although liver biopsy proved otherwise, with mostly liquefactive tissue and benign liver parenchyma. After a large infectious work-up ensued, the patient was diagnosed with disseminated Bartonella. He was treated with a 10-day course of azithromycin, and his symptoms resolved.

Leg blisters as an uncommon manifestation of a common childhood disease. Dr. Stefan Mammele, a resident at Kapi’olani Medical Center in Honolulu, and the University of Hawaii, presented a case of an 11-year-old boy with a painful and pruritic rash associated with multiple 5- to 10-mm tense bullae located on the patient’s bilateral lower extremities with extension to the trunk. The patient was also found to have hematuria and proteinuria. The bullae drained both serosanguinous and purulent material. Fluid culture grew group A Streptococcus and skin biopsy confirmed IgA vasculitis. Bullae are a rare characteristic of Henoch Schönlein pupura in children, but are more commonly seen as a disease manifestation in adults. The patient was treated with cefazolin, and his lesions improved over the course of several weeks with resolution of his hematuria by 6 months.

Is she crying blood? Dr. Joshua Price, a resident at Baystate Children’s Hospital in Springfield, Mass., described a 12-year-old female who presented with 7 days of left-sided hemolacria with acute vision loss and unilateral eye pain. This patient did not respond to outpatient topical steroids and antibiotics, as prescribed by ophthalmology. For this reason, she underwent further work-up and imaging. MRI of the head and orbits revealed left maxillary sinus disease. She was treated with antibiotics for acute left maxillary sinusitis and her hemolacria resolved within 24 hours. While the differential diagnosis for hemolacria is broad, rarely acute sinusitis has been reported as a cause in medical literature.

Recurrent bronchiolitis or something more? Dr. Moira Black, a resident at Children’s Memorial Hermann in Houston, presented a case of a 7-month-old female with a history of recurrent admissions for increased work of breathing believed to be secondary to viral bronchiolitis. Her first hospitalization occurred at 7 weeks of age and was complicated by spontaneous pneumothorax requiring chest tube placement. She was again hospitalized at 5 months of age with resolution of her increased work of breathing with high-flow nasal cannula. She presented again at 7 months of age with presumed bronchiolitis, however, she decompensated and required intubation on the 5th day of hospitalization. A bronchoscopy was performed and revealed a significantly narrowed left bronchus at the carina and a blind pouch on the right with notable pulsation of the walls. She underwent further imaging and was ultimately diagnosed with a left pulmonary artery sling. Left pulmonary artery slings are a rare, but potentially fatal anomaly that can present with wheezing, stridor, and recurrent respiratory infections. Patient underwent correction by cardiovascular surgery and has since been doing well.
 

Key takeaways for HM

• Bartonella is a common cause of fever of unknown origin, and should be considered in unusual presentations of febrile illnesses.

• Bullae in IgA vasculitis are rare in children and do not have prognostic value, but streptococcal infection may be a trigger for IgA vasculitis.

• Hemolacria is an atypical presentation of rare and common diagnoses that should prompt further work-up.

• Acute respiratory distress can be caused by underlying cardiac or vascular anomalies and can be mistaken for common viral illnesses.

Dr. Marsicek is a pediatric hospital medicine fellow at Johns Hopkins All Children’s Hospital, St. Petersburg, Fla. Dr. Wysocka is a pediatric resident at Johns Hopkins All Children’s Hospital.

Circulating tumor DNA (ctDNA) could be used to predict disease recurrence in patients with nonmetastatic colorectal cancer (CRC), according to investigators following an observational study.

About three out of four patients with a positive ctDNA test went on to have disease recurrence, reported lead author Yuxuan Wang, MD, PhD, of Johns Hopkins University School of Medicine in Baltimore, and her colleagues. On average, positive tests preceded clinical and radiologic evidence of recurrence by 3 months.

“[T]he optimal protocol for surveillance of resected colorectal cancer remains uncertain,” the investigators wrote in JAMA Oncology.

“The only recommended blood marker for CRC surveillance is serum [carcinoembryonic antigen (CEA)], an oncofetal protein that is elevated in the serum of patients with a variety of disease conditions, including CRC. Unfortunately, its utility is limited by the lack of sensitivity and specificity.” Although computed tomography and magnetic resonance imaging can improve disease detection, these techniques also have their own shortcomings, the investigators noted, setting the stage for the present study.

The investigators recruited 63 patients with stage I, II, or III CRC who underwent surgical resection in Sweden between 2007 and 2013. Blood samples for ctDNA testing were collected 1 month after surgery, then every 3-6 months. CT was performed every 6-12 months. During this process, 5 patients were excluded, leaving 58 patients in the final dataset, 18 (31%) of whom received adjuvant chemotherapy. Patients were followed until metastasis or a median of 49 months.

Among all patients, 13 tested positive for ctDNA, and 10 of these relapsed (77%), with a median time of 3 months between ctDNA positivity and CT or clinical evidence of recurrence. Three of the 48 patients (6%) who did not relapse had a positive ctDNA result that later dropped to an undetectable level. Of the 45 patients who tested negative for ctDNA, none had recurrence, although 1 was positive for CEA.

Results were also divided into patients who received or did not receive adjuvant chemotherapy. Among the 40 patients who did not receive chemotherapy, 8 had disease recurrence after a positive ctDNA test, although only 5 tested positive for CEA. Among the 18 patients who did receive chemotherapy, 2 tested positive for ctDNA and later relapsed, although only 1 tested positive for CEA. These figures translated to a ctDNA sensitivity for recurrence of 100%, compared with 60% for CEA testing.

“Serial ctDNA levels during follow-up can precede disease recurrence prior to routine radiographic imaging,” the investigators concluded. “Because ctDNA measurements can be obtained from blood samples collected during routine follow-up, they may be easily incorporated into routine follow-up to complement a CEA test, radiographic imaging, and other conventional modalities to help stratify patients on the basis of the risk of disease recurrence. Such a personalized surveillance strategy may allow for earlier detection of relapse and minimize unnecessary testing.”

The study was funded by the Virginia and D.K. Ludwig Fund for Cancer Research, the Commonwealth Foundation, the John Templeton Foundation, and others. The investigators reported financial relationships with PapGene, Sysmex, Eisai, and others.

SOURCE: Wang et al. JAMA Onc. 2019 May 9. doi: 10.1001/jamaoncol.2019.0512.

Circulating tumor DNA (ctDNA) could be used to predict disease recurrence in patients with nonmetastatic colorectal cancer (CRC), according to investigators following an observational study.

About three out of four patients with a positive ctDNA test went on to have disease recurrence, reported lead author Yuxuan Wang, MD, PhD, of Johns Hopkins University School of Medicine in Baltimore, and her colleagues. On average, positive tests preceded clinical and radiologic evidence of recurrence by 3 months.

“[T]he optimal protocol for surveillance of resected colorectal cancer remains uncertain,” the investigators wrote in JAMA Oncology.

“The only recommended blood marker for CRC surveillance is serum [carcinoembryonic antigen (CEA)], an oncofetal protein that is elevated in the serum of patients with a variety of disease conditions, including CRC. Unfortunately, its utility is limited by the lack of sensitivity and specificity.” Although computed tomography and magnetic resonance imaging can improve disease detection, these techniques also have their own shortcomings, the investigators noted, setting the stage for the present study.

The investigators recruited 63 patients with stage I, II, or III CRC who underwent surgical resection in Sweden between 2007 and 2013. Blood samples for ctDNA testing were collected 1 month after surgery, then every 3-6 months. CT was performed every 6-12 months. During this process, 5 patients were excluded, leaving 58 patients in the final dataset, 18 (31%) of whom received adjuvant chemotherapy. Patients were followed until metastasis or a median of 49 months.

Among all patients, 13 tested positive for ctDNA, and 10 of these relapsed (77%), with a median time of 3 months between ctDNA positivity and CT or clinical evidence of recurrence. Three of the 48 patients (6%) who did not relapse had a positive ctDNA result that later dropped to an undetectable level. Of the 45 patients who tested negative for ctDNA, none had recurrence, although 1 was positive for CEA.

Results were also divided into patients who received or did not receive adjuvant chemotherapy. Among the 40 patients who did not receive chemotherapy, 8 had disease recurrence after a positive ctDNA test, although only 5 tested positive for CEA. Among the 18 patients who did receive chemotherapy, 2 tested positive for ctDNA and later relapsed, although only 1 tested positive for CEA. These figures translated to a ctDNA sensitivity for recurrence of 100%, compared with 60% for CEA testing.

“Serial ctDNA levels during follow-up can precede disease recurrence prior to routine radiographic imaging,” the investigators concluded. “Because ctDNA measurements can be obtained from blood samples collected during routine follow-up, they may be easily incorporated into routine follow-up to complement a CEA test, radiographic imaging, and other conventional modalities to help stratify patients on the basis of the risk of disease recurrence. Such a personalized surveillance strategy may allow for earlier detection of relapse and minimize unnecessary testing.”

The study was funded by the Virginia and D.K. Ludwig Fund for Cancer Research, the Commonwealth Foundation, the John Templeton Foundation, and others. The investigators reported financial relationships with PapGene, Sysmex, Eisai, and others.

SOURCE: Wang et al. JAMA Onc. 2019 May 9. doi: 10.1001/jamaoncol.2019.0512.

Circulating tumor DNA (ctDNA) could be used to predict disease recurrence in patients with nonmetastatic colorectal cancer (CRC), according to investigators following an observational study.

About three out of four patients with a positive ctDNA test went on to have disease recurrence, reported lead author Yuxuan Wang, MD, PhD, of Johns Hopkins University School of Medicine in Baltimore, and her colleagues. On average, positive tests preceded clinical and radiologic evidence of recurrence by 3 months.

“[T]he optimal protocol for surveillance of resected colorectal cancer remains uncertain,” the investigators wrote in JAMA Oncology.

“The only recommended blood marker for CRC surveillance is serum [carcinoembryonic antigen (CEA)], an oncofetal protein that is elevated in the serum of patients with a variety of disease conditions, including CRC. Unfortunately, its utility is limited by the lack of sensitivity and specificity.” Although computed tomography and magnetic resonance imaging can improve disease detection, these techniques also have their own shortcomings, the investigators noted, setting the stage for the present study.

The investigators recruited 63 patients with stage I, II, or III CRC who underwent surgical resection in Sweden between 2007 and 2013. Blood samples for ctDNA testing were collected 1 month after surgery, then every 3-6 months. CT was performed every 6-12 months. During this process, 5 patients were excluded, leaving 58 patients in the final dataset, 18 (31%) of whom received adjuvant chemotherapy. Patients were followed until metastasis or a median of 49 months.

Among all patients, 13 tested positive for ctDNA, and 10 of these relapsed (77%), with a median time of 3 months between ctDNA positivity and CT or clinical evidence of recurrence. Three of the 48 patients (6%) who did not relapse had a positive ctDNA result that later dropped to an undetectable level. Of the 45 patients who tested negative for ctDNA, none had recurrence, although 1 was positive for CEA.

Results were also divided into patients who received or did not receive adjuvant chemotherapy. Among the 40 patients who did not receive chemotherapy, 8 had disease recurrence after a positive ctDNA test, although only 5 tested positive for CEA. Among the 18 patients who did receive chemotherapy, 2 tested positive for ctDNA and later relapsed, although only 1 tested positive for CEA. These figures translated to a ctDNA sensitivity for recurrence of 100%, compared with 60% for CEA testing.

“Serial ctDNA levels during follow-up can precede disease recurrence prior to routine radiographic imaging,” the investigators concluded. “Because ctDNA measurements can be obtained from blood samples collected during routine follow-up, they may be easily incorporated into routine follow-up to complement a CEA test, radiographic imaging, and other conventional modalities to help stratify patients on the basis of the risk of disease recurrence. Such a personalized surveillance strategy may allow for earlier detection of relapse and minimize unnecessary testing.”

The study was funded by the Virginia and D.K. Ludwig Fund for Cancer Research, the Commonwealth Foundation, the John Templeton Foundation, and others. The investigators reported financial relationships with PapGene, Sysmex, Eisai, and others.

SOURCE: Wang et al. JAMA Onc. 2019 May 9. doi: 10.1001/jamaoncol.2019.0512.