Considering microRNAs as measures of extrinsic domains of risk in the context of underlying genetic characteristics: type 2 diabetes as an exemplar.

MicroRNAs may serve as markers of extrinsic risk factors, complementing genetic ancestry markers to improve prediction of type 2 diabetes risk.

• Why it matters: Understanding the combined influence of genetic and extrinsic risk factors is crucial for accurately assessing complex diseases like T2D, yet current methods often conflate these domains.
• What they did: The study discusses the potential of microRNAs to quantify extrinsic domains of risk, alongside ancestry informative markers (AIMs), to create a more comprehensive risk assessment approach.
• The result: Integrating microRNAs with AIMs could enhance the accuracy of predicting T2D risk by capturing both intrinsic genetic and extrinsic behavioral, environmental, and social factors.