TY - JOUR T1 - Rare and unexpected cause of diabetes in a teenager JF - Archives of disease in childhood - Education & practice edition JO - Arch Dis Child Educ Pract Ed SP - 358 LP - 360 DO - 10.1136/archdischild-2018-315857 VL - 105 IS - 6 AU - Taffy Makaya AU - Aishatu Ali AU - Supriyo Basu Y1 - 2020/12/01 UR - http://ep.bmj.com/content/105/6/358.abstract N2 - A 15-year-old boy whose family originated from Pakistan presented with polyuria, polydipsia, abdominal pain and weight loss (WL). There was a complex three-generational family history of type 1 (T1DM) and type 2 diabetes mellitus (T2DM). The patient’s two paternal uncles had been reportedly diagnosed with T2DM; his mother and maternal uncle had T2DM. Another maternal uncle had been reportedly diagnosed with diabetes when aged 15 years, initially T2DM but requiring insulin. Both maternal grandparents had T2DM diagnosed when aged 30–40 years. The patient’s two maternal cousins were in our care with T1DM.Examination revealed mild epigastric tenderness, with moderate dehydration. Blood tests showed high blood glucose (BG): 18.8 mmol/L (NR: 4–7 mmol/L) and HbA1C: 90 mmol/mol (20–42 mmol/mol). Blood ketones were negative. Serum amylase was 185 IU/L(25-125 IU/L).Diabetes autoantibodies (islet cell, islet antigen 2, glutamic acid decarboxylase) were all negative. In view of the negative diabetes autoantibodies and the extensive family history of T1DM and T2DM, an oral … ER -