CRLF2 and JAK2 in B-Progenitor Acute Lymphoblastic Leukemia: A Novel Association in Oncogenesis
2010
Expression of cytokine receptor-like factor 2 (CRLF2) has recently been shown to be upregulated as well as mutated in populations of B-progenitor acute lymphoblastic leukemia (B-ALL), including Down syndrome (DS-ALL) patients, lacking recurring chromosomal translocations. Increased CRLF2 expression associates with JAK2 mutation, a combination that transforms hematopoietic cells, suggesting that mutant JAK2 and CRLF2 may cooperate to contribute to B-ALL formation. Importantly, elevated CRLF2 expression correlates with poor outcome in high-risk B-ALL patients. Therefore, CRLF2 may provide a new prognostic marker for high-risk B-ALL, and inhibition of CRLF2/JAK2 signaling may represent a therapeutic approach for this population of ALL patients. Cancer Res; 70(19); 7347–52. ©2010 AACR.
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