Background:
Diabetes Mellitus (DM), the most common endocrine disease, is characterized by metabolic abnormalities and by its long term complications. It is well known that genetic predisposition is an important factor in occurrence of diabetes mellitus but the mechanism of inheritance of this disorder is unclear. The more significance of maternal or paternal inheritance in diabetes has been a matter of controversy and difference in various populations and races, so this study was conducted to evaluate pattern of inheritances in Fars diabetes center referrals as a Southern Iranian population.