Graves’ disease is a form of autoimmune hyperthyroidism where the main extrathyroidal feature is thyroid eye disease. Autoantibodies that stimulate thyroid-stimulating hormone receptor (TSHR) are released and orchestrate hormone production in the thyroid tissue and the orbit. Regeneron Pharmaceuticals Inc. has developed REGN-24493, a monoclonal antibody (MAb) that binds TSHR and blocks its activation by those autoantibodies.