CLOCK and gestational diabetes: A causative chain (when the association is not significant after age and BMI adjustments only after age adjustment and the SNP associated effect on GDM develops via BMI) might potentially be existing for a few gene variants (HNF1 homeobox B—HNF1B [TCF2] -rs4430796, -rs7501939, clock circadian regulator—CLOCK -rs6832769,—“S2 Table”), however it needs confirmation with larger sample sizes and we may not yet report these associations as clinically meaningful causative chains due to the diminutive p-value differences after the two adjustments.