Case 9 was notable as they did not have a history of diabetes mellitus (HbA1c 5.6% or 38 mmol/mol) and was treated in a ward setting using fixed-rate intravenous insulin of 2 units/h (0.02 units/kg/h) administered concurrently with intravenous 4% dextrose + n/5 saline at 80 mL/h (Figure 2). The gene discussed is INS; the disease is diabetes mellitus.