A 51-year-old woman presents with a Body Mass Index (BMI) < 30 kg/m2 and lab tests display 6% (40.8 mmol/mol) glycosylated haemoglobin A1c (HbA1c), 6 mmol/L (108 mg/dL) fasting glucose and 10 mmol/L (180 mg/dL) glucose at 2 h of the standardized oral glucose tolerance test (OGTT), as well as 50 U/L ALT and 45 U/L AST.