Ocular Findings in Alemtuzumab (Campath-1H)-induced Thyroid Eye Disease.

Alemtuzumab (Campath-1H) is a humanized anti-CD52 monoclonal antibody used in the treatment of multiple sclerosis (MS). Studies demonstrate significant reduction in relapse risk and the risk of accumulating sustained disability. Adverse events include infusion-associated reactions, infections, and secondary autoimmunity. Systemic thyroid disease is the most common secondary autoimmune event and affects up to approximately 30% of treated patients. This is the first description of the ocular findings and management in a case of thyroid eye disease (Graves' Ophthalmopathy [GO]) following alemtuzumab therapy. The ocular disease was managed conservatively while the systemic Graves' was managed with thyroidectomy.