Abstract
Pemphigus vulgaris (PV), an autoimmune blistering disease is treated with immunosuppressive medications. As the immunosuppressive effect of rituximab, the first‐line therapy of PV, lasts more than 6 months, many concerns have raised due to the ongoing novel coronavirus disease (COVID‐19) pandemic. With this background, our objective was to review the currently available literature as well as important websites for the evidence related to rituximab, PV and COVID‐19, adverse effects associated with drugs, and relevant guidelines. “PubMed” and “Google Scholar” database were systematically searched for retrieving all articles related to anti‐CD20 therapy in pemphigus vulgaris and COVID‐19 published up to 14 July 2020. A total of seven clinical studies are performed with anti‐CD20 therapy in COVID‐19, three of which are performed on pemphigus patients, and have shown concerns employing rituximab in patients with COVID‐19. Evidence for treating PV patients with rituximab in COVID‐19 pandemic is limited. Until sufficient evidence or guideline for pemphigus and COVID‐19 treatment is available, we advocate caution commencing rituximab in patients with pemphigus, due to the reported adverse outcomes.
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