Prior evidence has described variable levels of evidence for MODY susceptibility genes14, 15, 16HNF1A, HNF4A, GCK, HNF1B, ABCC8, KCNJ11 and INS have been thought to be the more common well‐established forms of MODY.16, 17. The gene discussed is HNF4A; the disease is MODY.