TCF7L2: Type 2 Diabetes Risk (Secondary)

rs12255372 · Metabolic Health & Diabetes

A second TCF7L2 variant independently associated with type 2 diabetes risk, often in linkage disequilibrium with rs7903146.

What This SNP Does

rs12255372 is another polymorphism in the TCF7L2 gene region that has been independently associated with type 2 diabetes in multiple GWAS studies. While often inherited together with rs7903146, it can provide additional risk stratification. The T allele is the risk allele, similar to its paired variant.

Genotype Meanings

Genotype	Status	What It Means
GG	Lower risk	No increased risk from this variant.
GT	Moderate risk	~1.3x increased type 2 diabetes risk.
TT	Higher risk	~1.7x increased risk. Combined with rs7903146 TT, risk is substantially elevated.

What You Can Do

Same recommendations as rs7903146: glycemic control, exercise, weight management, regular glucose monitoring. A complete report analyzes both TCF7L2 variants together.

This information is for educational purposes only and is not medical advice. Always consult a qualified healthcare provider before making health decisions based on genetic data. Genome Decoder does not diagnose, treat, or prevent any disease.