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RESEARCH PAPER ANALYSIS

Genome-wide association study of childhood B-cell acute lymphoblastic leukemia reveals novel African ancestry-specific susceptibility loci.

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PMID41125582
JournalNature communications
Publication Date2025-10-22
Ingested2026-08-02 12:05 AM
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ABSTRACT

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B-cell acute lymphoblastic leukemia (B-ALL) is the most common pediatric malignancy. Given racial/ethnic differences in incidence and outcomes, B-ALL genome-wide association studies among children of African ancestry are needed. Leveraging multi-institutional datasets with 840 African American children with B-ALL and 3360 controls, nine loci achieved genome-wide significance (P < 5 × 10-8) after meta-analysis. Two loci were established trans-ancestral susceptibility regions (IKZF1, ARID5B), while the remaining novel loci were specific to African populations. Five-year overall survival among children carrying novel risk alleles was significantly worse (83% versus 96% in non-carriers, P = 4.8 × 10-3). Novel risk variants were also associated with subtype-specific disease (P < 0.05), including higher susceptibility for a subtype overrepresented in African American children (TCF3-PBX1) and lower susceptibility for a subtype with excellent prognosis (ETV6-RUNX1). Functional experiments revealed novel B-ALL risk variants had allele-specific differences in transcriptional activity (P < 0.05) in B-cell and leukemia cell lines. These findings shed insights into ancestry-related differences in leukemogenesis and prognosis.

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PATIENT-FRIENDLY SUMMARY

Genome-wide association study of childhood B-cell acute lymphoblastic leukemia reveals novel African ancestry-specific susceptibility loci.

For education only—not personal medical advice.

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