Rare Genetic Variants May Explain Extreme Trait Values, Study Finds
Rare Genetic Variants May Explain Extreme Trait Values, Study Finds
US · Published May 27, 2026
Researchers at the Icahn School of Medicine at Mount Sinai have identified that individuals with extreme values in traits such as cholesterol, blood glucose, and height may be influenced by rare genetic variants with significant effects.
Published in the journal Nature, the study challenges the traditional view that such traits are shaped by numerous common genetic variants with small effects.
The research analyzed data from large-scale genetic databases, including the UK Biobank and the All of Us Research Program, to explore the genetic architecture of 74 traits.

Impact & Risks

The study's findings could reshape how genetic research approaches the causes of extreme health traits, potentially leading to more targeted treatments and preventive care. However, the researchers caution that environmental and lifestyle factors, which also influence these traits, were not fully accounted for in the study. If confirmed, the role of rare genetic variants could help identify individuals at higher risk for certain diseases, but it also raises questions about the accessibility and equity of genetic testing and personalized medicine.

Related News