Deletion of CDKN2A/B is associated with inferior relapse free survival in pediatric B cell acute lymphoblastic leukemia.

Abstract:

:Considering conflicting data on CDKN2A/B deletion in ALL, this study to assess its prognostic significance as an independent marker in a total of 96 pediatric B and T-ALL cases was planned. The overall frequency of CDKN2A/B deletion was 44% (n = 43) with 36% (30/83) in B-ALL and 100% (13/13) in T-ALL. CDKN2A/B deletion was significantly associated with high WBC count (p = .002) and National Cancer Institute risk (p = .01) in B-ALL. Importantly, CDKN2A/B deletion cases had poor EFS of 42% at 28 months compared to EFS of 90% in rest (p = .0004). Further, relapse free survival was only 56% for cases with CDKN2A/B deletions (n = 25), compared to 100% in control group (p = .001). Moreover, CDKN2A/B deletion was the only risk factor associated with early relapse (p = .01) compared to IKZF1 deletion (p = .73) or occurrence of BCR-ABL1 fusion transcript (p = .26). Thus our study data highlights potential prognostic role of CDKN2A/B deletions in early disease stratification in pediatric B-ALL.

journal_name

Leuk Lymphoma

journal_title

Leukemia & lymphoma

authors

Kathiravan M,Singh M,Bhatia P,Trehan A,Varma N,Sachdeva MS,Bansal D,Jain R,Naseem S

doi

10.1080/10428194.2018.1482542

subject

Has Abstract

pub_date

2019-02-01 00:00:00

pages

433-441

issue

2

eissn

1042-8194

issn

1029-2403

journal_volume

60

pub_type

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