RECENT PROJECT PUBLISHED IN CANCER RESEARCH

New Peer-Reviewed Study Examines How Genetic Ancestry May Influence Pediatric Brain Tumor Outcomes 

A new peer-reviewed article in Cancer Research is drawing attention to an often-overlooked issue in pediatric brain tumor research: the lack of genetic ancestral diversity in the laboratory models used to develop new therapies. 

Published by investigators at the Children’s Brain Tumor Project, Weill Cornell Medicine, the review, “Lack of ancestral genetic heterogeneity in preclinical models may potentiate differences in treatment outcome in pediatric brain cancer,” examines how differences in genetic ancestry may influence tumor biology, treatment response, and ultimately survival outcomes for children with brain tumors. 

The paper synthesizes emerging evidence showing that children from racial and ethnic minority populations continue to experience worse outcomes in several pediatric brain tumor types — even as efforts have improved access to clinical trials and reduced some barriers to participation. The authors note that while clinical trial enrollment has become more representative in recent years, significant disparities in survival persist, suggesting that biological differences tied to genetic ancestry may also play an important role. 

Importantly, the researchers found that many of the cell lines and preclinical models used worldwide to study pediatric brain tumors are overwhelmingly derived from patients of European or East Asian ancestry, with very limited representation from other populations. Because these models serve as the foundation for testing new therapies before they reach children in clinical trials, the lack of ancestral diversity may unintentionally limit how broadly effective future treatments will be. 

The review also highlights broader disparities in pediatric cancer research, including underrepresentation of minority patients in biobanking initiatives and insufficient collection of demographic and ancestry data. The authors call for increased transparency, international collaboration, and more inclusive research practices to ensure that advances in precision medicine benefit all children equally. 

As a peer-reviewed scientific publication, this work underwent rigorous evaluation by experts in the field before publication, underscoring the growing recognition of ancestry-informed research as an important frontier in pediatric neuro-oncology. 

The study was supported in part by the St. Baldrick’s Foundation Infrastructure Award, as well as philanthropic support from organizations including the Children’s Brain Tumor Project Foundation, the Ty Louis Campbell Foundation, Cristian Rivera Foundation, Love4Lucas Foundation, Ellie Ruby Foundation, Kamen Brain Tumor Foundation, Patrick Bayly Marsano Foundation, Swifty Foundation, Samuel Jeffers Foundation, McKenna Claire Foundation, and the Andrew McDonough B+ Foundation.