GCK and MODY: Interestingly, MODY has been found to develop in different categories in women with GDM, with MODY-2, involved in mutations of the glucokinase gene, MODY-3, characterised by a genetic mutation in hepatocyte nuclear factor 1α, and lastly, MODY-4, involved in a mutation in insulin promoter factor 1 [94, 96–99].