Metabolic polygenic risk scores for prediction of obesity, type 2 diabetes, and related morbidities

Cell Metab. 2026 May 5;38(5):863-875.e5. doi: 10.1016/j.cmet.2026.02.009. Epub 2026 Mar 16.

Abstract

Obesity and type 2 diabetes (T2D) are metabolic diseases with shared pathophysiology. Traditional polygenic risk scores (PRSs) have focused on these conditions individually, yet the single-disease approach falls short in capturing the full dimension of metabolic dysfunction. We derived a biologically enriched metabolic PRS (MetPRS), a composite score that uses multi-ancestry genome-wide association studies of 20 metabolic traits from over 8.5 million individuals. MetPRS, optimized to predict obesity (O-MetPRS) and T2D (D-MetPRS), outperformed existing PRSs in predicting obesity and T2D across six ancestries. O-MetPRS and D-MetPRS effectively identify individuals at high risk for metabolic multimorbidity and predict clinical outcomes, including GLP-1 receptor agonist initiation. O-MetPRS and D-MetPRS showed an ∼2-fold increased risk of GLP-1 receptor agonist initiation for the top decile versus the middle quintile. The biologically enriched MetPRS has the potential to add an extra layer of information to disease prediction and management approaches for metabolic diseases.

Keywords: GLP-1 receptor agonist; metabolic traits; multi-ancestry GWAS; multimorbidity; obesity; polygenic risk score; type 2 diabetes.

MeSH terms

  • Diabetes Mellitus, Type 2* / epidemiology
  • Diabetes Mellitus, Type 2* / genetics
  • Diabetes Mellitus, Type 2* / metabolism
  • Female
  • Genetic Predisposition to Disease
  • Genetic Risk Score
  • Genome-Wide Association Study
  • Humans
  • Male
  • Multifactorial Inheritance* / genetics
  • Obesity* / epidemiology
  • Obesity* / genetics
  • Obesity* / metabolism
  • Risk Factors