Abstract:
BACKGROUND:The association of nonparaneoplastic pemphigus with comorbid hematologic malignancies has yet to be established. OBJECTIVE:To estimate the association between pemphigus and the common types of hematologic malignancies. METHODS:A cross-sectional study was conducted comparing pemphigus patients with age-, sex- and ethnicity-matched control subjects regarding the prevalence of 6 comorbid hematologic malignancies. The study was performed using the computerized database of Clalit Health Services ensuring the availability of 4.5 million patients. RESULTS:The study included 1985 pemphigus patients and 9874 control subjects. The prevalence of chronic leukemia (0.9% vs 0.4%, odds ratio [OR] 2.1, 95% confidence interval [CI] 1.2-3.6), multiple myeloma (0.8% vs 0.4%, OR 2.2, 95% CI 1.2-3.9), and non-Hodgkin lymphoma (1.8% vs 1.2%, OR 1.5, 95% CI 1.0-2.2) was greater in patients with pemphigus than in controls. The association with chronic leukemia remained significant following the adjustment for immunosuppressive therapy (adjusted OR 2.0, 95% CI 1.1-3.7). No significant associations were observed between pemphigus and acute leukemia, Hodgkin lymphoma, myelodysplastic syndrome, and polycythemia vera. LIMITATIONS:Lack of immunopathologic validation of the diagnosis of pemphigus. CONCLUSION:A significant association was observed between pemphigus and chronic leukemia, multiple myeloma, and non-Hodgkin lymphoma. Further research is warranted to establish this observation in other cohorts.
journal_name
J Am Acad Dermatoljournal_title
Journal of the American Academy of Dermatologyauthors
Kridin K,Zelber-Sagi S,Comaneshter D,Batat E,Cohen ADdoi
10.1016/j.jaad.2017.11.039subject
Has Abstractpub_date
2018-06-01 00:00:00pages
1084-1089.e1issue
6eissn
0190-9622issn
1097-6787pii
S0190-9622(17)32738-Xjournal_volume
78pub_type
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