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A radioimmunoconjugate containing the recombinant humanized monoclonal antibody trastuzumab conjugated with the bifunctional chelating agent TCMC ((1,4,7,10-Tetra-(2-Carbamoyl Methyl)-Cyclododecane), and radiolabeled with the alpha-emitting isotope lead Pb 212, with potential anti-tumor activity. Upon administration, the antibody moiety of lead Pb 212 TCMC-trastuzumab binds with high affinity to the extracellular domain of human epidermal growth factor receptor 2 (HER2); after internalization, the radioisotope moiety delivers a cytotoxic dose of alpha radiation to the HER2-expressing tumor cells. HER2, a tyrosine kinase receptor, is overexpressed on the cell surface of a variety of cancer cell types. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C97500\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C97500\' NCI Thesaurus)
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