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abatacept

A soluble fusion protein consisting of the extracellular domain of human cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) linked to a modified Fc (hinge, CH2, and CH3 domains) portion of human immunoglobulin G1 (IgG1) with immunosuppressive activity. Abatacept binds CD80 and CD86 on antigen presenting cells (APCs), blocking interaction with CD28 on T lymphocytes, which initiates a co-stimulatory signal required for full activation of T lymphocytes.

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Synonym:	CTL A4-Ig B7 Inhibitor CTLA4-Ig cytotoxic T lymphocyte-associated antigen-4
US brand name:	Orencia
Code name:	BMS-188667 RG2077
NSC code:	710084

abatacept

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