COVA208 is a bispecific FynomAb targeting HER2, consisting of a fusion protein of an antibody and a FynSH3-derived binding protein. It induces the degradation of HER2, reducing the levels of HER2, HER3, and EGFR, effectively blocking downstream signaling pathways such as HER3-PI3K-AKT and MAPK, and inducing apoptosis in tumor cells. COVA208 shows promise for research in cancers like HER2-positive breast, gastric, and colorectal cancers.