Continuous glucose monitoring (CGM) sensors measure interstitial glucose.17 Automated insulin delivery (AID) systems vary in their capabilities but broadly consist of three features: an insulin pump, a CGM and an algorithm which determines the rate of insulin infusion.18 Both these treatments aim to improve glycaemic control whilst reducing the overall burden of hypoglycaemia and, importantly, the frequency of SH. This evidence concerns the gene INS and Hypoglycemia.