Rearrangement of CRLF2 in B-progenitor and Down syndrome associated acute lymphoblastic leukemia

ABSTRACT: Chromosomal aneuploidy and translocations are hallmarks of acute lymphoblastic leukemia (ALL), but many patients lack a recurring chromosomal alteration. Here we report a recurring interstitial deletion of the pseudoautosomal region 1 of chromosomes X and Y in B-progenitor ALL that results in the expression of a novel fusion that juxtaposes the first non-coding exon of P2RY8 to the coding region of the CRLF2 (cytokine receptor like factor 2, or thymic stromal lymphopoietin receptor) gene. The P2RY8-CRLF2 fusion was identified in 7% of B-ALL cases, and was very common in ALL associated with Down syndrome (55% of cases) and was associated with the presence of JAK mutations. The P2RY8-CRLF2 fusion results in increased expression of CRLF2, a lymphoid signaling molecule that forms a heterodime

ORGANISM(S): Homo sapiens

SUBMITTER: Charles Mullighan 

PROVIDER: E-GEOD-16724 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress