← Glossary
Marker

rs7903146

rs7903146 is an intronic variant in TCF7L2 (transcription factor 7-like 2) on chromosome 10q25, the single strongest and most widely replicated common genetic risk locus for type 2 diabetes. The T risk allele is associated with impaired pancreatic beta-cell insulin secretion and blunted incretin hormone action, raising fasting glucose and HbA1c, with a pooled odds ratio near 1.46 per T allele across populations. It is a core contributor, combined with genome-wide polygenic scores, to type 2 diabetes risk assessment.

Traits rs7903146 reads

Gene

Reference databases

How Biome reads this

Biome's at-home DNA test reads this directly from one saliva sample, alongside 650,000+ other markers.

Biome DNA test

This page is for educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure, or prevent any disease. Genetic results describe tendencies and predispositions, not diagnoses. Always consult a licensed clinician before making decisions about your health, medications, or supplements.