Rituximab is an anti-CD20 monoclonal antibody that is widely used for recalcitrant pemphigus. It indnces remission by rapidly depleting the B cell population.
We present five cases of pemphigus vulgaris treated with Rituximab in our hospital between 2010 and 2018. All of them have relapsed and been treated with a second cycle of rituximab. The average time to relapse was 28 months. In every case, we monitored clinical responses and decreases in autoantibody titers, which enabled us to taper corticosteroid and immunosuppressants. Average time of follow-up after first rituximab treatment was 81 months. There were no serious adverse reactions. We concluded that rituximab is efficacious for severe pemphigus resistant to combination therapies, including high-dose corticosteroid therapy, immunosuppressants and IVIG, and/or plasmapheresis.