Background
Trastuzumab with the brand name Herceptin, is an FDA-approved drug for HER2-targeted therapy for breast cancer. It is a recombinant humanized monoclonal antibody (IgG1 kappa). Trastuzumab binds to HER2 receptor present on the surface of HER2-positive tumour cells and suppresses the cells growth and proliferation.• Polyclonal Antibody against Different Extracellular Subdomains of HER2 Induces Tumor Growth Inhibition in vitro., PMID:28919583• Discovery of epitopes for targeting the human epidermal growth factor receptor 2 (HER2) with antibodies., PMID:19393584• Inhibitory Effect of Polyclonal Antibodies Against HER3 Extracellular Subdomains on Breast Cancer Cell Lines., PMID:32102522• Combining lapatinib (GW572016), a small molecule inhibitor of ErbB1 and ErbB2 tyrosine kinases, with therapeutic anti-ErbB2 antibodies enhances apoptosis of ErbB2-overexpressing breast cancer cells., PMID:16091755• Estimation of hormone receptor status and HER2 in cytologic cell blocks from breast cancer using the novel rabbit monoclonal antibodies (SP1, SP2, and SP3)., PMID:19530101• Role of RLIP76 in lung cancer doxorubicin resistance: III. Anti-RLIP76 antibodies trigger apoptosis in lung cancer cells and synergistically increase doxorubicin cytotoxicity., PMID:12632061• IGF1R Protein Expression Is Not Associated with Differential Benefit to Concurrent Trastuzumab in Early-Stage HER2+Breast Cancer from the North Central Cancer Treatment Group (Alliance) Adjuvant Trastuzumab Trial N9831., PMID:28533226• Evaluation of the United States Food and Drug Administration-approved scoring and test system of HER-2 protein expression in breast cancer., PMID:11410505• Immunohistochemical detection of Her-2/neu overexpression in breast carcinoma in Nigerians: a 5-year retrospective study., PMID:22037080• Polyclonal antitumor immunoglobulin may play a role in ovarian cancer adjuvant therapy., PMID:21255939