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MULTIPLE-SCLEROSIS AND HLA - IS THE SUSCEPTIBILITY GENE REALLY HLA-DR OR -DQ

FRANCIS, DA; THOMPSON, AJ; BROOKES, P; DAVEY, N; LECHLER, RI; MCDONALD, WI; BATCHELOR, JR; (1991) MULTIPLE-SCLEROSIS AND HLA - IS THE SUSCEPTIBILITY GENE REALLY HLA-DR OR -DQ. HUM IMMUNOL , 32 (2) 119 - 124.

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Abstract

Seventy-one patients with multiple sclerosis (MS) were classified into four subgroups according to the clinical pattern of their disease; their HLA-DR and DQ polymorphisms were defined by serological methods and analysis of Taq 1 digestion fragments hybridizing with DRB, DQA, and DQB cDNA probes. The frequencies of the polymorphisms in the patients were compared with those of 100 control subjects. The frequencies of a 3.25-kb fragment from Mspl digests of genomic DNA which hybridized to DQA were also defined in the same groups of patients and control subjects. HLA-DR2 (DRw 15 subtype) and the associated HLA-DQw6 were observed in significant excess in the patients compared with the normal subjects (63% vs. 32% for DRw15; 65% vs. 42% for DQw6). There were no significant differences in the distribution of the DR or DQ alleles between the groups of patients showing different clinical patterns of disease, nor was there an excess in the patients of DQw8 and DQw9 which share hypervariable region sequences of the DQB chain in common with DQw6.The results argue against two recently proposed hypotheses of MS. First, they are not consistent with the proposal that susceptibility to MS is associated with expression of a hypervariable region of DQB shared by DQw6, 8, and 9. Second, they do not support the concept that primarily chronic progressive and relapsing/remitting MS are two immunogenetically distinct disease entities. Our evidence is consistent with the hypothesis that one of the true disease susceptibility genes for MS lies elsewhere within the HLA region and in Northern European populations is found in significant association with DRw15 and DQw6.

Type:Article
Title:MULTIPLE-SCLEROSIS AND HLA - IS THE SUSCEPTIBILITY GENE REALLY HLA-DR OR -DQ
Keywords:TRANSPORTERS, SEQUENCES, REGION, ALPHA
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Brain Sciences

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