ZAP-70 is a kind of protein kinase, which is expressed in T cells and NK cells and participates in the activation of T cell receptor. The mutation of this gene will lead to severe compound immunodeficiency syndrome (SCID). The antigen is also related to the mutation of LG heavy chain gene in patients with chronic lymphocytic leukemia (CLL), disease progression and prognosis. Therefore, the expression of ZAP-70 can be used for the prognosis of CLL.
Zeta-associated protein (ZAP)-70,a member of the Syk family of tyrosine kinases,plays an important role in T-cell receptor signaling,natural killer (NK) cell activation and early B-cell development. ZAP-70 is expressed in a subset of cases of chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) with unmutated immunoglobulin heavy-chain variable region (IgVH) genes and is associated with poor clinical outcome.
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