PMID- 7956632 OWN - NLM STAT- MEDLINE DCOM- 19941202 LR - 20190515 IS - 0149-5992 (Print) IS - 0149-5992 (Linking) VI - 17 IP - 8 DP - 1994 Aug TI - HLA-DQB1 codon 57 and IDDM in Chinese living in Taiwan. PG - 863-8 AB - OBJECTIVE: To study the human leukocyte antigen (HLA)-DQB1 genetic background in the Chinese population in Taiwan and its association with the low incidence of insulin-dependent diabetes mellitus (IDDM) in this population. RESEARCH DESIGN AND METHODS: Forty-eight IDDM patients and 59 nondiabetic unrelated control subjects were recruited from the population in Taiwan. HLA-DQB1 exon 2 was enzymatically amplified by polymerase chain reaction. HLA-DQB1 alleles were diagnosed by dot blotting and hybridization with 16 sequence-specific oligonucleotide probes. RESULTS: DQB1*0201 and DQB1*0302 alleles were more frequent and DQB1*0301 and DQB1*0601 were less frequent in Chinese with IDDM than in control subjects. Genotypes for homozygous non-aspartic acid residue (NA/NA) at position 57 were positively associated with IDDM at a relative risk of 4.34 (P < 0.001), and those for homozygous aspartic acid (A/A) were negatively associated with IDDM at a relative risk of 0.14 (P < 0.001). Among the NA/A heterozygotes, only DQB1*0201/DQB1*0303 was significantly increased in IDDM subjects. CONCLUSIONS: The amino acid residue at position 57 of HLA-DQ beta-chain is significantly associated with the development or prevention of IDDM in Chinese subjects living in Taiwan. Other genetic and environmental factors may also play important roles in pathogenesis of IDDM. FAU - Chuang, L M AU - Chuang LM AD - Department of Internal Medicine, National Taiwan University, Taipei. FAU - Jou, T S AU - Jou TS FAU - Hu, C Y AU - Hu CY FAU - Wu, H P AU - Wu HP FAU - Tsai, W Y AU - Tsai WY FAU - Lee, J S AU - Lee JS FAU - Hsieh, R P AU - Hsieh RP FAU - Chen, K H AU - Chen KH FAU - Tai, T Y AU - Tai TY FAU - Lin, B J AU - Lin BJ LA - eng PT - Clinical Trial PT - Comparative Study PT - Controlled Clinical Trial PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Diabetes Care JT - Diabetes care JID - 7805975 RN - 0 (Codon) RN - 0 (HLA-DQ Antigens) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQB1 antigen) RN - 30KYC7MIAI (Aspartic Acid) SB - IM MH - Adolescent MH - Alleles MH - Aspartic Acid MH - China/ethnology MH - Codon MH - Diabetes Mellitus, Type 1/epidemiology/*genetics/*immunology MH - Gene Frequency MH - Genotype MH - HLA-DQ Antigens/*genetics MH - HLA-DQ beta-Chains MH - Homozygote MH - Humans MH - Incidence MH - Reference Values MH - Regression Analysis MH - Taiwan EDAT- 1994/08/01 00:00 MHDA- 1994/08/01 00:01 CRDT- 1994/08/01 00:00 PHST- 1994/08/01 00:00 [pubmed] PHST- 1994/08/01 00:01 [medline] PHST- 1994/08/01 00:00 [entrez] AID - 10.2337/diacare.17.8.863 [doi] PST - ppublish SO - Diabetes Care. 1994 Aug;17(8):863-8. doi: 10.2337/diacare.17.8.863.