title: Personalized drug combinations to overcome trastuzumab resistance in HER2-positive breast cancer.
abstract: HER2-positive (HER2+) breast cancer accounts for 18%-20% of all breast cancer cases and has the second poorest prognosis among breast cancer subtypes. Trastuzumab, the first Food and Drug Administration-approved targeted therapy for breast cancer, established the era of personalized treatment for HER2+ metastatic disease. It is well tolerated and improves overall survival and time-to-disease progression; with chemotherapy, it is part of the standard of care for patients with HER2+ metastatic disease. However, many patients do not benefit from it because of resistance. Substantial research has been performed to understand the mechanism of trastuzumab resistance and develop combination strategies to overcome the resistance. In this review, we provide insight into the current pipeline of drugs used in combination with trastuzumab and the degree to which these combinations have been evaluated, especially in patients who have experienced disease progression on trastuzumab. We conclude with a discussion of the current challenges and future therapeutic approaches to trastuzumab-based combination therapy.
authors: Department of Systems Biology, Unit 950, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA; Experimental Therapeutics Academic Program, The University of Texas Graduate School of Biomedical Sciences at Houston, 6767 Bertner Ave., Houston, TX 77030, USA.
authors: Thuy
authors: T
authors: Vu
authors: Research Oncology, Genentech, South San Francisco, CA 94080, USA.
authors: Mark X
authors: MX
authors: Sliwkowski
authors: Department of Systems Biology, Unit 950, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA; Experimental Therapeutics Academic Program, The University of Texas Graduate School of Biomedical Sciences at Houston, 6767 Bertner Ave., Houston, TX 77030, USA. Electronic address: fxclaret@mdanderson.org.
authors: Francois X
authors: FX
authors: Claret
mesh_terms: D061067:Antibodies, Monoclonal, Humanized / Q000627:therapeutic use*; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D001943:Breast Neoplasms / Q000737:chemistry / Q000188:drug therapy*; D019008:Drug Resistance, Neoplasm; D005260:Female; D006801:Humans; D057285:Precision Medicine; D018719:Erb-b2 Receptor Tyrosine Kinases / Q000032:analysis*; D000068878:Trastuzumab
chemical_list: D061067:Antibodies, Monoclonal, Humanized; D000970:Antineoplastic Agents; D018719:Erb-b2 Receptor Tyrosine Kinases; D000068878:Trastuzumab; C508053:ERBB2 protein, human
keywords: Combination approaches; HER2-positive breast cancer; Targeted therapy; Trastuzumab resistance