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Association of susceptibility to multiple sclerosis in Sweden with HLA class II DRB1 and DQB1 alleles
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Genetics and Pathology.
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1994 (English)In: Human Immunology, ISSN 0198-8859, Vol. 39, no 1, 41-8 p.Article in journal (Refereed) Published
Abstract [en]

The association of MS with HLA class II alleles was studied by PCR-based typing of the DQA1, DQB1, DRB1, and DPB1 loci in 94 Swedish patients with relapses and remissions of the disease. The haplotype DRB1*1501-DQA1*0102-DQB1*0602 was found to be positively associated and three haplotypes were found to be negatively associated with MS. Linkage disequilibrium makes it difficult to assess whether DRB1 or DQB1 plays the primary role in the disease association, while the association with DPB1 and DQA1 appears to be secondary to that of DQB1 and DRB1. Two of the three haplotypes negatively associated with MS carry the DQB1*0301 allele. Also, the negatively associated DRB1*0401-DQA1*0301-DQB1*0301 haplotype differs from those with nonassociated DRB1*0401-DQA1*0301-DQB1*0302 haplotype only at DQB1. These results suggest that DQB1 alleles, as well as some DRB1 alleles, are involved in susceptibility and protection to MS. In searching for sequence motifs in the DR beta chain associated with MS susceptibility, all DRB1 alleles on haplotypes positively associated with MS, including the DRB1*1501, were found to encode a Val at position 86 of the DR beta chain. Also, DRB1 alleles that are negatively associated with MS all encode a Gly at position 86, suggesting that the residue at position 86 may be critical in conferring susceptibility and protection to MS. Finally, when the effect of the DRB1*1501 haplotype was removed there was no support for the hypothesis that MS is associated with a putative DQ-alpha beta heterodimer, encoded for by certain DQA1 and DQB1 alleles.

Place, publisher, year, edition, pages
1994. Vol. 39, no 1, 41-8 p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-62804DOI: 10.1016/0198-8859(94)90099-XPubMedID: 8181961OAI: oai:DiVA.org:uu-62804DiVA: diva2:90715
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2009-09-04Bibliographically approved

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Allen, MariePetterson, UlfGyllensten, Ulf
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