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Open AccessJournal ArticleDOI

Inherited GATA3 variants are associated with Ph-like childhood acute lymphoblastic leukemia and risk of relapse

TLDR
In a genome-wide association study of 511 ALL cases and 6,661 non-ALL controls, a susceptibility locus for Ph-like ALL is identified and genotype at the GATA3 SNP was associated with early treatment response and risk of ALL relapse, providing insights into interactions between inherited and somatic variants and their role in ALL pathogenesis and prognosis.
Abstract
Recent genomic profiling of childhood acute lymphoblastic leukemia (ALL) identified a high-risk subtype with an expression signature resembling that of Philadelphia chromosome-positive ALL and poor prognosis (Ph-like ALL). However, the role of inherited genetic variation in Ph-like ALL pathogenesis remains unknown. In a genome-wide association study (GWAS) of 511 ALL cases and 6,661 non-ALL controls, we identified a susceptibility locus for Ph-like ALL (GATA3, rs3824662; P = 2.17 × 10(-14), odds ratio (OR) = 3.85 for Ph-like ALL versus non-ALL; P = 1.05 × 10(-8), OR = 3.25 for Ph-like ALL versus non-Ph-like ALL), with independent validation. The rs3824662 risk allele was associated with somatic lesions underlying Ph-like ALL (CRLF2 rearrangement, JAK gene mutation and IKZF1 deletion) and with variation in GATA3 expression. Finally, genotype at the GATA3 SNP was also associated with early treatment response and risk of ALL relapse. Our results provide insights into interactions between inherited and somatic variants and their role in ALL pathogenesis and prognosis.

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Citations
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Journal ArticleDOI

[Acute lymphoblastic leukemia: a genomic perspective].

TL;DR: An overview of the genomic perspective of ALL is provided, describing some strategies that contribute to the identification of biomarkers with potential clinical application.
Journal ArticleDOI

Therapy-related acute lymphoblastic leukemia: Where do we stand with regards to its definition and characterization?

TL;DR: All related to prior cytotoxic therapy (t-ALL) appears to be a distinct entity when compared to the de novo ALL, with characteristics including older age at the time of onset, female predominance and leukemia genetics enriched with KMT2A (MLL) gene rearrangement and chromosomes 5/7 abnormalities.
Journal ArticleDOI

Association of the independent polymorphisms in CDKN2A with susceptibility of acute lymphoblastic leukemia

TL;DR: It is indicated that two SNPs at CDKN2A locus are associated with ALL susceptibility independently mainly in Caucasians, and future large-scale studies are required to validate the associations in other ethnicities.
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Shaun Purcell, +81 more
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Journal ArticleDOI

LocusZoom: regional visualization of genome-wide association scan results

TL;DR: LocusZoom is a web-based plotting tool that provides fast visual display of GWAS results in a publication-ready format that visually displays regional information such as the strength and extent of the association signal relative to genomic position, local linkage disequilibrium (LD) and recombination patterns and the positions of genes in the region.
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