NEW YORK / Oct 14, 2025 / Business Wire / Pfizer Inc. (NYSE: PFE) today announced positive topline results from the Phase 3 HER2CLIMB-05 trial of first-line combination therapy with the tyrosine kinase inhibitor TUKYSA ® (tucatinib) in patients with human epidermal growth factor receptor 2-positive (HER2+) metastatic breast cancer (MBC). HER2CLIMB-05 is evaluating TUKYSA versus placebo, both in combination with first-line... Read More