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A radiolabeled antibody-targeted antineoplastic antibiotic consisting of the enediyne antibiotic calicheamicin conjugated with anti-Lewis Y antibody and labeled with indium In 111. In 111 CMD-193 binds to Lewis Y antigen-expressing tumor cells via its antibody moiety and is internalized; subsequently, the calicheamicin moiety binds to the minor groove of tumor cell DNA, causing double-strand DNA breaks, the inhibition of DNA synthesis, and apoptosis. The indium In 111 radiolabel allows the detection of CMD-193 distribution and tumor localization using gamma scintigraphy. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C62481\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C62481\' NCI Thesaurus)
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