Deletion of IKZF1 and prognosis in acute lymphoblastic leukemia.

ABSTRACT:

Background

Despite best current therapy, up to 20% of pediatric patients with acute lymphoblastic leukemia (ALL) have a relapse. Recent genomewide analyses have identified a high frequency of DNA copy-number abnormalities in ALL, but the prognostic implications of these abnormalities have not been defined.

Methods

We studied a cohort of 221 children with high-risk B-cell-progenitor ALL with the use of single-nucleotide-polymorphism microarrays, transcriptional profiling, and resequencing of samples obtained at diagnosis. Children with known very-high-risk ALL subtypes (i.e., BCR-ABL1-positive ALL, hypodiploid ALL, and ALL in infants) were excluded from this cohort. A copy-number abnormality was identified as a predictor of poor outcome, and it was then tested in an independe

SUBMITTER: Mullighan CG 

PROVIDER: S-EPMC2674612 | biostudies-literature | 2009 Jan

REPOSITORIES: biostudies-literature