GIPR and type 2 diabetes mellitus: In this Letter, we sequenced GIPR in four Danish study cohorts (N = 10,523), including patients newly diagnosed with type 2 diabetes (T2D) (DD2 cohort), individuals from a population-based study cohort (Inter99 cohort) screened for T2D, a cohort of obese children and adolescents (Holbaek Study) and a cohort of women with gestational diabetes mellitus (GDM cohort) in search for genetic variants in the GIPR.