GSTM1 and coronary artery disorder: Known risk factors for sulphonylurea-induced hypoglycaemia (SIH) include low haemoglobin (Hb)A1c, old age, long duration of diabetes, comorbid conditions (such as congestive heart failure, coronary artery disease, ischemic heart disease, and renal insufficiency), taking multiple medications (polypharmacy), use of long-acting sulphonylurea preparations, and pharmacogenetic factors [7,8].