%0 Case Reports %T A rare adverse effect in inebilizumab therapy for neuromyelitis optica spectrum disorder: a case report. %A Chen X %A Shi Z %A Wang R %A Zhou H %J Ther Adv Neurol Disord %V 17 %N 0 %D 2024 %M 39072007 %F 6.43 %R 10.1177/17562864241258787 %X Inebilizumab is one of the monoclonal antibodies approved as maintenance therapy for aquaporin-4 immunoglobulin G-seropositive neuromyelitis optica spectrum disorder (NMOSD). It is a humanized monoclonal antibody targeting cluster of differentiation 19 (CD19). Common adverse reactions include urinary tract infections, nasopharyngitis, arthralgia, infusion reactions, headaches and a decrease in immunoglobulin levels. Here, we present a case of an NMOSD patient who experienced transient hyperCKaemia after the use of inebilizumab. The adverse reactions of this very rare monoclonal antibody drug improved after discontinuation.