GATA6 and diabetes mellitus: Monogenic diabetes due to GATA6 mutation often manifests as neonatal diabetes and abnormal pancreatic development; however, this syndrome may be diagnosed in older children or even adults, with or without pancreatic developmental defects, combined with heart defects, hepatobiliary defects, and abnormalities such as muscle hernia, growth retardation, hypothyroidism, etc. [15].