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First page of Type 2 diabetes polygenic risk score interactions with lifestyle risk factors in Black Americans

Introduction Prior work in predominantly European ancestry populations has explained how the risk associated with demographic, lifestyle, and health factors differs with underlying genetic susceptibility to type 2 diabetes (T2D), but less is known about these relationships in Black Americans. Methods We used covariate-adjusted logistic regression models of T2D to examine interactions between a published trans-ancestry derived T2D polygenic risk score (PRS) and various demographic, lifestyle, and health-related factors among 28,251 self-identified Black Americans from six cohort studies. Results The results are generally consistent with prior work in White populations. The PRS showed a significant interaction with body mass index, with a greater effect on T2D risk in individuals who were leaner (p interaction= 0.038). Conclusion These results contribute to understanding the relationship between genetics and other T2D risk factors in Black Americans who have a high burden of T2D, potentially informing targeted prevention strategies.

Journal Section:
Clinical Study
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The Author(s). Published by S. Karger AG, Basel
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2025
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License .
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