Maturity-onset diabetes of the young (MODY) due to PDX1 mutation in a sib-pair diabetes family from Qatar.

Maturity-onset diabetes of young (MODY) is an autosomal dominant genetic disorder that causes insulin deficiency without autoimmunity. We present the first family with pancreatic duodenal homeobox 1 (PDX1) mutation causing diabetes from Qatar. Routine genetic screening of all antibody-negative diabetic patients with diabetes should be offered to avoid misdiagnosis.