RO7122290 is a bispecific antibody-like fusion protein consisting of a trimeric ligand for the T-cell co-stimulatory immune receptor 4-1BB (CD137) and an antigen-binding fragment (Fab) moiety targeting the tumor-associated protein fibroblast activation protein (FAP), with potential immunomodulating and antineoplastic activities. It exhibits potential for treating advanced solid tumors. MW: 177.78 KD.