On the other hand, a widely replicated T2D SNP, rs7903146 (TCF7L2), in European populations has substantially low risk allele frequency in the Mongolian sample (0.06 versus 0.31 in the Caucasian sample; FST = 0.27) and is not associated in our sample of modest size. Here, TCF7L2 is linked to type 2 diabetes mellitus.