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FLT3

FLT3

The FLT3 gene in humans encodes the protein FLT3, also known as Fms-like tyrosine kinase 3 (CD135). The class III receptor tyrosine kinase family includes FLT3, a cytokine receptor.FLT3 is the cytokine Flt3 ligand (FLT3L)'sreceptor. On the surface of many hematopoietic progenitor cells, FLT-3 is expressed. The normal development of hemopoietic stem cells and progenitor cells depends on FLT3 signaling. One of the genes with the highest frequency of mutations in acute myeloid leukemia (AML) is FLT3. Furthermore, high FLT3 levels in blast cells from some AML patients without FLT3 mutations have been observed. The prognosis may be worse when these levels are high. Cell proliferation, differentiation, and survival are influenced by FLT3 signaling. FLT3 is crucial for the growth of lymphocytes (B and T cells), but not for the growth of other blood cells. The cytokines TNF-Alpha and TGF-Beta both inhibit FLT3 activity.

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