BACKGROUND Maturity-onset diabetes of the young (MODY) is a heterogeneous entity of monogenic disorders characterized by autosomal dominant inheritance. Eleven genes were related, including HNF4α, GCK, HNF1α, IPF1, and HNF-1β, and various mutations are being reported. METHODS To help the overall understanding of MODY-related pathologic mutations, we studied a large MODY family found in 2012, ...

preserved beta-cell function and negative autoantibodies [7] . While a family history of diabetes is rare in youth with T1DM, individuals with MODY and standard T2DM will show a strong family history of T2DM. There are demographic differences in the types of childhood diabetes. Although the incidence of T1DM is higher in white children, the incidence is increasing in black children [8] , and th...

1. Type 1 diabetes (due to autoimmune b-cell destruction, usually leading to absolute insulin deficiency) 2. Type 2 diabetes (due to a progressive loss ofb-cell insulin secretion frequently on the background of insulin resistance) 3. Gestational diabetes mellitus (GDM) (diabetes diagnosed in the second or third trimester of pregnancy that was not clearly overt diabetes prior to gestation) 4. Sp...

Mutation in HNF1B, the hepatocyte nuclear factor-1β (HNF-1β) gene, results in maturity-onset diabetes of the young (MODY) 5, which is characterized by gradual impairment of insulin secretion. However, the functional role of HNF-1β in insulin secretion and glucose metabolism is not fully understood. We identified a family with early-onset diabetes that fulfilled the criteria of MODY. Sanger sequ...

Studies of monogenic disorders of -cell function have yielded important information on -cell physiology and have improved the diagnosis and treatment of patients with these rare diseases. These disorders include defects associated with increased insulin secretion, causing hypoglycemia, and decreased insulin secretion, resulting in diabetes. The most common form of monogenic diabetes is so-calle...

BACKGROUND Maturity onset diabetes of the young type 2 (or GCK MODY) is a genetic form of diabetes mellitus provoked by mutations in the glucokinase gene (GCK). METHODOLOGY/PRINCIPAL FINDINGS We screened the GCK gene by direct sequencing in 30 patients from South Italy with suspected MODY. The mutation-induced structural alterations in the protein were analyzed by molecular modeling. The pati...

Glucokinase (GCK) plays a key role in glucose metabolism. GCK mutations are known as a pathogenic cause of maturity-onset diabetes of the young type 2 (MODY2). These mutations are also found in gestational diabetics. The aim of our study was to assess the variability of the GCK gene in the Czech diabetic and control populations. We screened all 10 exons specific for the pancreatic isoform of gl...

Variants in HNF1A encoding hepatocyte nuclear factor 1α (HNF-1A) are associated with maturity-onset diabetes of the young form 3 (MODY 3) and type 2 diabetes. We investigated whether functional classification of HNF1A rare coding variants can inform models of diabetes risk prediction in the general population by analyzing the effect of 27 HNF1A variants identified in well-phenotyped populations...

OBJECTIVE In 1997, the American Diabetes Association proposed two subcategories for type 1 diabetes: type 1A or immunomediated diabetes and type 1B or idiopathic diabetes characterized by negative beta-cell autoimmunity markers, lack of association with HLA, and fluctuating insulinopenia. The aim of this study was to examine clinical characteristics, beta-cell function, HLA typing, and mutation...