Satralizumab

Satralizumab, sold under the brand name Enspryng, is a humanized monoclonal antibody medication that is used for the treatment of neuromyelitis optica spectrum disorder (NMOSD), a rare autoimmune disease.[5][6] The drug is being developed by Chugai Pharmaceutical, a subsidiary of Roche.[7] The most common side effects include the common cold (nasopharyngitis), headache, upper respiratory tract infection, inflammation of the lining of the stomach... [wikipedia]