NCI Drug Dictionary
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An orally bioavailable, synthetic small-molecule antagonist of a subset of the B-cell leukemia 2 (Bcl-2) family of proteins with potential antineoplastic activity. BcI-2 family protein inhibitor ABT-263 selectively binds to apoptosis suppressor proteins Bcl-2, Bcl-XL, and Bcl-w and prevents their binding to the apoptotic effectors Bax and Bak proteins, which may trigger apoptosis in tumor cells overexpressing Bcl-2, Bcl-XL, and Bcl-w. Bcl-2, Bcl-XL, and Bcl-w are frequently overexpressed in a wide variety of cancers, including those of the lymphatic system, breast, lung, prostate, and colon, and have been linked to tumor drug resistance. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
|Synonym:||BcI-2 family protein inhibitor ABT-263|