Viridian Therapeutics, Inc. discovers, develops, and commercializes treatments for serious and rare diseases. It develops IGF-1R therapies for thyroid eye disease (TED), including Veligrotrug, an intravenously administered humanized monoclonal antibody targeting IGF-1R, and Elegrobart, a low-volume, infrequently dosed subcutaneous IGF-1R therapy. The company also develops an anti-thyroid-stimulating hormone receptor (TSHR) candidate for Graves' disease and TED. Its portfolio of engineered inhibitors of the neonatal Fc receptor (FcRn) includes VRDN-006, a highly selective Fc fragment, and VRDN-008, a half-life extended bispecific FcRn inhibitor comprising a GC fragment and an albumin-binding domain designed to prolong IgG suppression. Formerly known as Miragen Therapeutics, Inc., it changed its name to Viridian Therapeutics, Inc. in January 2021. Incorporated in 2010, it is headquartered in Waltham, Massachusetts.