DM: Diabetes mellitus, BCQR: Bromocriptine quick release, HbA1c: Hemoglobin A1c, FPG: Fasting plasma glucose, PPPG: Post-prandial plasma glucose, GLP-1: Glucagon-like peptide-1, mg/dL: milligrams per decilitre. Here, GCG is linked to diabetes mellitus.