Work

A single-arm, open-label, phase 2 study of MGAH22 (margetuximab) [fc-optimized chimeric anti-HER2 monoclonal antibody (mAb)] in patients with relapsed or refractory advanced breast cancer whose tumors express HER2 at the 2+ level by immunohistochemistry and lack evidence of HER2 gene amplification by FISH.