Brain, Vol. 110, No. 1, 181-196, 1987
© 1987 Oxford University Press
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MULTIPLE SCLEROSIS IN NORTH-EAST SCOTLAND AN ASSOCIATION WITH HLA-DOW1
1From the The Department of Immunology, Royal Postgraduate Medical School, Hammersmith Hospital 2From the Institute of Neurology, National Hospital for Nervous Diseases Queen Square, London 3From the The Departments of Medicine and Neurology, Aberdeen Royal Infirmary Aberdeen
Correspondence to:
Correspondence to: Professor W. Ian McDonald, Institute of Neurology, Queen Square, London WC1N 3BG.
This study reports the frequencies of HLA antigens and the polymorphic variants of C4, C2, and Bf for 200 patients with multiple sclerosis (MS) living in the Grampian region of Scotland, an area of high disease prevalence. A group of 128 normal subjects from the same region were typed for comparison. Although the frequencies of HLA-B7 and DR2 in the patient group (43.3% and 49.4%, respectively) were found to be similar to those reported for other Northern European HLA studies on patients with MS, high frequencies of these antigens were also observed in the group of normal Grampian subjects (38.3% and 40.6%) the differences were not statistically significant. However, a significant association was found between the recently defined Class II HLA antigen, DQwl, and MS (P < 0.006) when compared with controls. There were no significant differences in frequency of the polymorphisms of C4, C2, and Bf when the group of patients with MS was compared with the control group of normal subjects.
The patients were subdivided according to disease severity, remittent versus progressive clinical course, age of onset of the disease and initial symptoms. The frequencies of the HLA and complement polymorphisms (C4, C2, and Bf) were analysed in these subdivisions. DQwl was found with similar frequency in severe and benign disease (78% and 80%, respectively) but DR2 was most frequent in the group of patients with remittent disease (54%). There were no significant differences in frequency of the polymorphisms of C4, C2, and Bf between the above subgroups of patients and overall no significant HLA associations were found with age of onset of disease or initial symptoms.
The findings suggest that in an area of high prevalence of MS, the disease is more closely associated with DQwl than DR2. Furthermore, there was no evidence to support the hypothesis that the HLA region complement gene polymorphisms show significant association with a putative HLA-linked MS susceptibility gene.
Received September 12, 1985. Revised April 23, 1986. Accepted April 24, 1986.
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