HIGHLIGHTS • Tusamitamab ravtansine (SAR408701) is a humanized monoclonal antibody covalently linked to a cytotoxic maytansinoid • This potential first-in-class antibody-drug conjugate selectively targets tumor cells expressing CEACAM5 • 100 mg/m2 IV every two weeks is the maximum tolerated dose of tusamitamab ravtansine; reversible keratopathy being the dose limiting toxicity • Tusamitamab ravtansine has a favorable safety profile with infrequent hematological toxicities compared with that...