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Rare, serious alemtuzumab adverse events emerge
New reports reveal rare adverse events in the treatment of relapsing-remitting multiple sclerosis using alemtuzumab.
Autoimmune risk with alemtuzumab
Alemtuzumab (Lemtrada) has been linked to autoimmune thyroid disorders, especially Graves’ disease, Dr. Williamson said. It’s estimated to affect 17%-41% of patients (Front Endocrinol [Lausanne]. 2017;8:254).
Potentially life-threatening idiopathic thrombocytopenic purpura occurs in 2% of patients on Lemtrada, he said, and anti-GMB nephropathy/Goodpasture’s syndrome has been reported in 0.1%.
Dr. Williamson also noted case reports of autoimmune hemolytic anemia and hepatitis. Earlier this year, three reports in Neurology noted acute coronary syndrome in one patient, hemophagocytic lymphohistiocytosis (HLH) in two patients, and acute acalculous cholecystitis in eight patients (Neurology. 2018 Mar 30. doi: 10.1212/WNL.0000000000005422, doi: 10.1212/WNL.0000000000005420, doi: 10.1212/WNL.0000000000005417).
Dr. Williamson disclosed past consulting for Bayer, Biogen, Celgene, Genentech, EMD Serono, Teva, and Novartis, and current research support from Actelion and Alexion.