Pregnancy in various forms of monogenic diabetes: A systematic review

Monogenic diabetes (MD) represents a cluster of different types of diabetes produced by a mutation of a single gene. The commonest type of MD is maturity-onset diabetes of the young (MODY) which has several subtypes, and neonatal diabetes mellitus (NDM). With improved diagnostic facilities, more cases of monogenic diabetes are being described, and pregnancy is being reported in different forms of monogenic diabetes as these patients enter the reproductive age group. The treatment of monogenic diabetes may change once pregnancy sets in. For example, some forms of monogenic diabetes which respond to oral antidiabetic drugs (OHA), particularly the sulfonylurea agents (SUs), may need insulin during pregnancy. However, this depends on the fetal inheritance of mutation from the mother. This review attempts to put together published reports of pregnancy in various types of monogenic diabetes focussing on the most frequently seen forms of MD.