PMID- 27543737 OWN - NLM STAT- MEDLINE DCOM- 20190628 LR - 20211204 IS - 0125-877X (Print) IS - 0125-877X (Linking) VI - 35 IP - 2 DP - 2017 Jun TI - Frequency of HLA-DQB1*0201/02 and DQB1*0302 alleles and tissue transglutaminase antibody seropositivity in children with type 1 diabetes mellitus. PG - 82-85 LID - 10.12932/AP0751 [doi] AB - BACKGROUND: Patients with type 1 diabetes mellitus (T1DM) have an increased risk of celiac disease (CD). Both diseases have a common genetic susceptibility locus in the human leukocyte antigen (HLA) class II alleles. Testing for tissue transglutaminase antibodies (anti-tTG) is highly accurate for a CD diagnosis. OBJECTIVE: To determine the frequency of HLA-DQB1*0201/02 and DQB1*0302 alleles and anti-tTG seropositivity in children with T1DM. METHOD: Forty-six children with T1DM (male:female=24:22; mean age 12+/-3.7 years) without significant digestive symptoms were enrolled. The mean duration of diabetes was 5+/-3.5 years. Serum anti-tTG IgA and IgG as well as HLA-DQ2 (DQB1*0201/02) and -DQ8 (DQB1*0302) alleles were analyzed. The allele frequencies were compared with those in controls, which included 124 normal Thai individuals, as reported in our previous study. RESULTS: All subjects were negative for anti-tTG IgG. Only one patient (2.2%) was positive for anti-tTG IgA (38.5 U/mL; cut-off 15 U/mL). Although this patient was also heterozygous for HLA-DQ2 and was asymptomatic for CD, he declined endoscopic confirmation. Twenty-nine of 46 patients carried HLA-DQ2 and/or -DQ8 heterodimers. HLA-DQB1*0201/02 and HLA-DQB1*0302 allele frequencies were significantly higher (27% and 14%) in T1DM patients compared with normal controls (13.3% and 7.3%; P<0.001 and P=0.002, respectively). CONCLUSIONS: A significantly greater frequency of DQB1*0201/02 and DQB1*0302 alleles were present in children with T1DM compared with the control group. This indicates a potentially important role of these alleles in the development of T1DM. The prevalence of CD screening by serologic testing is negligible in Thai children with T1DM. FAU - Thammarakcharoen, Thanita AU - Thammarakcharoen T AD - Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Thailand. FAU - Hirankarn, Nattiya AU - Hirankarn N AD - Center of Excellence in Immunology and Immune-mediated Diseases, Department of Microbiology, Faculty of Medicine, Chulalongkorn University. FAU - Sahakitrungruang, Taninee AU - Sahakitrungruang T AD - Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Thailand. FAU - Thongmee, Thanunrat AU - Thongmee T AD - Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Thailand. FAU - Kuptawintu, Pavinee AU - Kuptawintu P AD - National Blood Center, The Thai Red Cross Society. FAU - Kanoonthong, Sriprapai AU - Kanoonthong S AD - National Blood Center, The Thai Red Cross Society. FAU - Chongsrisawat, Voranush AU - Chongsrisawat V AD - Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Thailand. LA - eng GR - T32 DK007161/DK/NIDDK NIH HHS/United States PT - Journal Article PL - Thailand TA - Asian Pac J Allergy Immunol JT - Asian Pacific journal of allergy and immunology JID - 8402034 RN - 0 (Autoantibodies) RN - 0 (HLA-DQ Antigens) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQ2 antigen) RN - 0 (HLA-DQB1 antigen) RN - 0 (Immunoglobulin A) RN - 0 (Immunoglobulin G) RN - EC 2.3.2.13 (Protein Glutamine gamma Glutamyltransferase 2) RN - EC 2.3.2.13 (Transglutaminases) RN - EC 3.6.1.- (GTP-Binding Proteins) SB - IM MH - Adolescent MH - Alleles MH - Autoantibodies/*blood MH - Celiac Disease/immunology MH - Child MH - Child, Preschool MH - Diabetes Mellitus, Type 1/*genetics/*immunology MH - Female MH - GTP-Binding Proteins/*immunology MH - Gene Frequency MH - Genetic Predisposition to Disease MH - Genotype MH - HLA-DQ Antigens/genetics MH - HLA-DQ beta-Chains/*genetics MH - Haplotypes MH - Histocompatibility Testing MH - Humans MH - Immunoglobulin A/blood MH - Immunoglobulin G/blood MH - Male MH - Protein Glutamine gamma Glutamyltransferase 2 MH - Transglutaminases/*immunology EDAT- 2016/08/21 06:00 MHDA- 2019/06/30 06:00 CRDT- 2016/08/21 06:00 PHST- 2016/08/21 06:00 [pubmed] PHST- 2019/06/30 06:00 [medline] PHST- 2016/08/21 06:00 [entrez] AID - 10.12932/AP0751 [doi] PST - ppublish SO - Asian Pac J Allergy Immunol. 2017 Jun;35(2):82-85. doi: 10.12932/AP0751.