trevogrumab trevogrumab trevogrumab (inn; development code regn1033) is a human monoclonal antibody designed for the treatment of muscle atrophy due to orthopedic disuse and sarcopenia. trevogrumabmonoclonal antibodytype?sourcehumantargetgrowth differentiation factor 8clinical dataother namesregn1033atc codenoneidentifierscas number1429201-24-0chemspidernoneunii87t4327873keggd11242chemical and physical dataformulac6374h9884n1696o2018s46molar mass144037.80 g·mol−1 this drug was developed by regeneron pharmaceuticals, inc.