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ofatumumab A fully human, high-affinity IgG1 monoclonal antibody directed against the B cell CD20 cell surface antigen with potential antineoplastic activity. Ofatumumab binds specifically to CD20 on the surfaces of B cells, triggering complement-dependent cell lysis (CDCL) and antibody-dependent cell-mediated cytotoxicity (ADCC) B cells overexpressing CD20. The CD20 antigen, found on over 90% of B cells of B cell lymphomas and other B cells of lymphoid tumors of B cell origin, is a non-glycosylated cell surface phosphoprotein that acts a calcium ion channel; it is exclusively expressed on B cells during most stages of B cell development. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
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Foreign brand name: | ![](https://webarchive.library.unt.edu/eot2008/20081005061637im_/http://www.nci.nih.gov/images/spacer.gif) | HuMax-CD20 | | ![](https://webarchive.library.unt.edu/eot2008/20081005061637im_/http://www.nci.nih.gov/images/spacer.gif) |
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