Data from Impact of Genetic Ancestry on Genomics and Survival Outcomes in T-cell Acute Lymphoblastic Leukemia

<div>Abstract<p>The influence of genetic ancestry on genomics in T-cell acute lymphoblastic leukemia (T-ALL) has not been fully explored. We examined the impact of genetic ancestry on multiomic alterations, survival outcomes, and risk stratification. Among 1,309 children and young adults with T-ALL treated on the Children’s Oncology Group trial AALL0434, the prognostic value of five commonly altered T-ALL genes varied by ancestry—including <i>NOTCH1</i>, which was associated with superior overall survival for patients of European ancestry but was nonprognostic among patients of African ancestry. Integrating genetic ancestry with published T-ALL risk classifiers, we identified that an X01 penalized Cox regression classifier stratified patients regardless of ancestry, whereas a European multigene classifier misclassified patients of certain ancestries. Overall, 80% of patients harbored a genomic alteration in at least one gene with differential prognostic impact in an ancestry-specific manner. These data demonstrate the importance of incorporating genetic ancestry into genomic risk classification.</p>Significance:<p>There is a lack of studies examining the prognostic significance of genomic features by genetic ancestry in T-ALL, especially in non-European ancestral groups. In this study, we demonstrate how the prognostic value of individual alterations differs by genetic ancestry, warranting future studies to identify germline alleles affecting these associations.</p><p><a href="https://aacrjournals.org/bloodcancerdiscov/article-abstract/doi/10.1158/2643-3230.BCD-25-0221" target="_blank"><i>See related commentary by de Smith, p. 400</i></a></p></div>

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Publication Details

Published
2025-09-03
DOI
https://doi.org/10.1158/2643-3230.c.8014458
Primary Topic
Acute Lymphoblastic Leukemia research
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article
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article

Data from Impact of Genetic Ancestry on Genomics and Survival Outcomes in T-cell Acute Lymphoblastic Leukemia

Kai Tan, Michael F. McCoy, Mignon L. Loh, Jason Xu et al.
Acute Lymphoblastic Leukemia research
article

Data from Impact of Genetic Ancestry on Genomics and Survival Outcomes in T-cell Acute Lymphoblastic Leukemia

Kai Tan, Michael F. McCoy, Mignon L. Loh, Jason Xu, Brent Lee Wood, Yimei Li, Stephen P. Hunger, Elizabeth A. Raetz, Shawn H.R. Lee, David T. Teachey, Zachary Martinez, Gongping Shi, Gang Wu, Petri Pölönen, Lahari Uppuluri, Wenjian Yang, Hongyan Liu, Junior Hall, Richard Aplenc, Andrew D. Hughes, Rawan Shraim, Haley Newman, Lena E. Winestone, Changya Chen, Charles Grenfell Mullighan, Jun J. Yang, Kimberly P. Dunsmore, Shovik Bandyopadhyay, Stanley Pounds, Stuart S. Winter, Anna Eames Seffernick, Caroline Diorio, Sumit Gupta, Omar Elghawy, Tiffaney L. Vincent, Ruth Wang’ondu, Meenakshi Devidas, Kira O'Neil Bona, Jonathan Sussman, Amira Elhachimi, Cassidy G. Mullen, Thomas Fuller
article en

Abstract

<div>Abstract<p>The influence of genetic ancestry on genomics in T-cell acute lymphoblastic leukemia (T-ALL) has not been fully explored. We examined the impact of genetic ancestry on multiomic alterations, survival outcomes, and risk stratification. Among 1,309 children and young adults with T-ALL treated on the Children’s Oncology Group trial AALL0434, the prognostic value of five commonly altered T-ALL genes varied by ancestry—including <i>NOTCH1</i>, which was associated with superior overall survival for patients of European ancestry but was nonprognostic among patients of African ancestry. Integrating genetic ancestry with published T-ALL risk classifiers, we identified that an X01 penalized Cox regression classifier stratified patients regardless of ancestry, whereas a European multigene classifier misclassified patients of certain ancestries. Overall, 80% of patients harbored a genomic alteration in at least one gene with differential prognostic impact in an ancestry-specific manner. These data demonstrate the importance of incorporating genetic ancestry into genomic risk classification.</p>Significance:<p>There is a lack of studies examining the prognostic significance of genomic features by genetic ancestry in T-ALL, especially in non-European ancestral groups. In this study, we demonstrate how the prognostic value of individual alterations differs by genetic ancestry, warranting future studies to identify germline alleles affecting these associations.</p><p><a href="https://aacrjournals.org/bloodcancerdiscov/article-abstract/doi/10.1158/2643-3230.BCD-25-0221" target="_blank"><i>See related commentary by de Smith, p. 400</i></a></p></div>

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Acute Lymphoblastic Leukemia research
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