Bristol Myers Squibb (NYSE:BMY) has won FDA approval for Opdivo (nivolumab) in combination with fluoropyrimidine- and platinum-based chemotherapy as a first-line treatment for adults with unresectable advanced or metastatic esophageal squamous cell carcinoma (ESCC). The agency also approved Opdivo with Yervoy (ipilimumab) for ESCC. Both approvals cover ESCC regardless of programmed death-ligand 1 (PD-L1) status.…