TMEM154 and type 2 diabetes mellitus: Carriers of the T2D risk C-allele of TMEM154-rs6813195 had a lower disposition index in Inter99 both in the analysis with (n = 5,181, β = -0.042, p = 0.012) and without adjustments for BMI (n = 5,182, β = -0.043, p = 0.014) (Table 2).