Successful Treatment of Pemphigus Vulgaris With Ofatumumab

Rituximab is a chimeric anti-CD20 monoclonal antibody that is very effective in treating patients with pemphigus vulgaris. Though infrequent, the development of human anti-chimeric antibodies in patients receiving rituximab results in loss of efficacy. Ofatumumab is a second-generation fully-human anti-CD20 monoclonal antibody currently used to treat chronic lymphocytic leukemia. We report a case of a patient with pemphigus vulgaris successfully treated with ofatumumab after developing human anti-chimeric antibodies to rituximab. J Drugs Dermatol. 2018;17(12):1338-1339.