PMID- 16390391 OWN - NLM STAT- MEDLINE DCOM- 20060307 LR - 20221207 IS - 1399-543X (Print) IS - 1399-543X (Linking) VI - 6 IP - 4 DP - 2005 Dec TI - Slowly progressing form of type 1 diabetes mellitus in children: genetic analysis compared with other forms of diabetes mellitus in Japanese children. PG - 221-9 AB - AIMS: Slowly progressing insulin-dependent diabetes mellitus (SPIDDM, hereafter referred to as IDDMS in this article) is a unique subtype of type 1 diabetes in Japanese children. To clarify the genetic background of IDDMS, we analyzed HLA-DRB1, -DQB1 and -DQA1 alleles, phenotypes, and genotypes and compared them with acute-onset type 1 diabetes, non-insulin-dependent diabetes mellitus (NIDDM), and control subjects. METHODS: HLA-DRB1, -DQA1, and -DQB1 types were defined by DNA analysis using polymerase chain reaction (PCR), and typing for human leukocyte antigen (HLA) was performed by the sequencing-based typing (SBT) method using Match Maker and MT Navigator in combination. HLA-A24 was determined by the PCR-sequence-specific oligo-nucleotide probe (PCR-SSOP) method. The 234 patients with type 1 diabetes were divided into three groups: 32 cases of IDDMS, 137 cases of acute-onset form aged more than 5 yr (IDDMA), and 65 cases of acute-onset form less than 5 yr of age at onset (IDDME). In addition, we studied 55 children with type 2 diabetes (NIDDM) and 97 normal controls. RESULTS: The patients with IDDMS were older at diagnosis and had a greater body mass index (BMI) than those with IDDM (A + E). The prevalence of islet autoantbodies was not significantly different from IDDMA. The allele frequencies of DRB1*0405, DQA1*0302, and DQB1*0401 were significantly increased; however, DRB1*0901, DQA1*03, DQB1*0303, and HLA-A24 were low and not significantly different from control subjects. CONCLUSIONS: HLA phenotypes and genotypes in patients with IDDMS were different from those in NIDDM and control subjects and were closer to those of IDDMA. Together with a low prevalence of HLA-A24, the genetic features are similar to those of SPIDDM and latent autoimmune diabetes in adults (LADA) in adults. In our series, the clinical features such as lack of obesity and lack of responsiveness to oral hypoglycemic agents were most different from those of adults' onset. FAU - Ohtsu, Shigeyuki AU - Ohtsu S AD - Department of Pediatrics, Kitasato University School of Medicine, Sagamihara, Japan. FAU - Takubo, Noriyuki AU - Takubo N FAU - Kazahari, Mayumi AU - Kazahari M FAU - Nomoto, Keiko AU - Nomoto K FAU - Yokota, Fumiyuki AU - Yokota F FAU - Kikuchi, Nobuyuki AU - Kikuchi N FAU - Koike, Akemi AU - Koike A FAU - Matsuura, Nobuo AU - Matsuura N LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Denmark TA - Pediatr Diabetes JT - Pediatric diabetes JID - 100939345 RN - 0 (Autoantibodies) RN - 30KYC7MIAI (Aspartic Acid) RN - 94ZLA3W45F (Arginine) SB - IM MH - Age of Onset MH - Arginine MH - Asian People/genetics MH - Aspartic Acid MH - Autoantibodies/analysis MH - Case-Control Studies MH - Child MH - Child, Preschool MH - Diabetes Mellitus, Type 1/epidemiology/*genetics/immunology MH - Diabetes Mellitus, Type 2/genetics/immunology MH - Disease Progression MH - Female MH - Gene Frequency MH - Genotype MH - Haplotypes MH - Humans MH - Japan/epidemiology MH - Male MH - Phenotype EDAT- 2006/01/05 09:00 MHDA- 2006/03/08 09:00 CRDT- 2006/01/05 09:00 PHST- 2006/01/05 09:00 [pubmed] PHST- 2006/03/08 09:00 [medline] PHST- 2006/01/05 09:00 [entrez] AID - PDI133 [pii] AID - 10.1111/j.1399-543X.2005.00133.x [doi] PST - ppublish SO - Pediatr Diabetes. 2005 Dec;6(4):221-9. doi: 10.1111/j.1399-543X.2005.00133.x.