Abstract
We determined the distribution of DR4 subtypes in 309 DQB1*0302-positive haplotypes found in insulin-dependent diabetes mellitus (IDDM) patients and 70 control haplotypes present only in healthy family members. An increased frequency of DRB1*0401 allele (74.4% vs. 55.7%, P = 0.003) and a decrease of DRB1*0404 allele (23.6% vs. 40.0%, P = 0.0064) was revealed. A further analysis of extended haplotypes demonstrated strong linkages between various B alleles and DRB1*04 subtypes. HLA-B39 was more frequent in DRB1*0404-DQB1*0302-positive IDDM haplotypes compared with control ones (37.0% vs. 14.3%, P = 0.049), suggesting an involvement of the region telomeric to HLA-DRB1 in the susceptibility to IDDM.
Original language | English |
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Pages (from-to) | 357-63 |
Number of pages | 7 |
Journal | European journal of immunogenetics : official journal of the British Society for Histocompatibility and Immunogenetics |
Volume | 24 |
Issue number | 5 |
Publication status | Published - Oct 1997 |
Externally published | Yes |
Keywords
- Adolescent
- Alleles
- Child
- Child, Preschool
- Diabetes Mellitus, Type 1/epidemiology
- Disease Susceptibility
- Finland/epidemiology
- Gene Frequency
- Genetic Linkage
- HLA-B Antigens/analysis
- HLA-DQ Antigens/genetics
- HLA-DQ beta-Chains
- HLA-DR Antigens/analysis
- HLA-DR4 Antigen/analysis
- HLA-DRB1 Chains
- Haplotypes/genetics
- Humans
- Risk Factors