Type 1 Diabetes is a multifactorial disease, with a strong genetic contribution of HLA genes, and minor contributions of many additional genes. The investigators hypothesis is that in addition to multifactorial inheritance, there are subtypes of diabetes that are caused by defects in single genes (monogenic diabetes). The aim of this project is to identify these genes, based on detailed clinical and characterization of patients, and to describe the corresponding genetic diabetes entities with respect to the genetic and molecular defect, clinical features and biochemistry. Based on the investigators study design, most of these diabetes entities will be caused by mutations affecting the two copies of the corresponding gene. In addition, the investigators will study the relatives of the patients, and explore if carriers of these genetic defects (i.e. only one copy of the gene being defective) may have a predisposition to common forms of diabetes, mainly type 2 diabetes.
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Identification and genetic, clinical and metabolic characterization of monogenic diabetes forms
Timeframe: 36 months