Trastuzumab : in HER2 and hormone receptor co-positive metastatic breast cancer.
Trastuzumab is a humanised IgG1 monoclonal antibody, which selectively binds to the human epidermal growth factor receptor 2 (HER2), inhibiting cell proliferation and survival in HER2-dependent tumours. In a randomised phase III trial in postmenopausal women with HER2 and hormone receptor (HR) co-positive metastatic breast cancer, median progression-free survival (primary endpoint) was significantly longer in patients receiving intravenous trastuzumab plus oral anastrozole than in those receiving anastrozole alone. Overall response rate and clinical benefit rate were also significantly higher, and median time to disease progression was significantly longer with trastuzumab plus anastrozole versus anastrozole alone. There were no reports of new or unexpected adverse events with trastuzumab plus anastrozole combination therapy in the randomised phase III trial. In a noncomparative phase II study of trastuzumab plus letrozole in postmenopausal women with HER2 and HR co-positive metastatic breast cancer, the majority of adverse events were mild or moderate in severity.
Wolters Kluwer Health | Adis, Auckland, New Zealand.
Jennifer S
JS
Orman
Caroline M
CM
Perry
D000911:Antibodies, Monoclonal / Q000009:adverse effects / Q000627:therapeutic use*; D061067:Antibodies, Monoclonal, Humanized; D000970:Antineoplastic Agents / Q000009:adverse effects / Q000627:therapeutic use; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000378:metabolism / Q000473:pathology; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D009362:Neoplasm Metastasis; D018719:Erb-b2 Receptor Tyrosine Kinases / Q000032:analysis*; D011987:Receptors, Steroid / Q000032:analysis*; D000068878:Trastuzumab; D016896:Treatment Outcome
D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D000970:Antineoplastic Agents; D018719:Erb-b2 Receptor Tyrosine Kinases; D011987:Receptors, Steroid; D000068878:Trastuzumab