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The prognostic implications of CDKN2A/2B deletion in childhood acute lymphoblastic leukemia: a systematic review and meta-analysis.

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PMID40560782
JournalLeukemia & lymphoma
Publication Date2025-06-25
Ingested2026-08-02 12:04 AM
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ABSTRACT

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This review aimed to evaluate the impact of cyclin-dependent kinases 2 A/2B (CDKN2A/2B) deletion on survival in pediatric acute lymphoblastic leukemia (ALL). We pooled hazard ratios (HRs) and risk ratios (RRs) with 95% CIs, which were calculated using random-effects models. Individual patient data (IPD) were extracted from published survival curves of included studies, and combined HR was estimated. Fourteen studies (n = 2532 subjects) were included. CDKN2A/2B deletion was found to be associated with poor event/disease/relapse-free survivals at both study levels (HR 2.18; 95% CI: 1.46-3.27; I2 51%) and IPD level (HR 3.45; 95% CI 2.76-4.32 and p < 0.001); and poor overall survival at the IPD level (HR 3.22; 95% CI: 1.78-5.84 and p < 0.001). CDKN2A/2B deletion was also associated with a higher risk of poor prednisolone response (RR 1.38; 95% CI: 1.09-1.74; I2 7%) and relapse rates (RR 3.83; 95% CI: 2.76-5.3; I2 -0%). The meta-analysis highlights the negative impact of CDKN2A/2B deletions on disease outcome and treatment response. Hence, incorporating these alterations should improve risk stratification and risk-adapted treatment strategies for childhood ALL.

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The prognostic implications of CDKN2A/2B deletion in childhood acute lymphoblastic leukemia: a systematic review and meta-analysis.

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