Novel anti-CD20 monoclonal approved in Canada for MS
January 27, 2021…for hepatitis B reactivation and progressive multifocal leukoencephalopathy (PML). Ofatumumab is a fully human anti-CD20 MAb, in contrast to rituximab (chimeric) and ocrelizumab (humanized). It binds specifically to a distinct CD20 epitope and induces cell lysis primarily through complement-dependent cytotoxicity (CDC). The half-life is about 15 days in men and 17 days in women. Following administration of ofatumumab, B cells are depleted to belo…