Volume 31, Issue 8 pp. 990-994
Article
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Dqβ polymorphism and genetic susceptibility to felty's syndrome

K. L. SO Alex MA, PhD, MRCP

Corresponding Author

K. L. SO Alex MA, PhD, MRCP

Rheumatology Unit, Department of Medicine, Royal Postgraduate Medical School, London, and the United Kingdom Transplant Service, Bristol, United Kingdom.

Rheumatology Unit, Department of Medicine, Royal Postgraduate Medical School, Du Cane Road, London W12, UKSearch for more papers by this author
Catherine A. Warner BSc

Catherine A. Warner BSc

Rheumatology Unit, Department of Medicine, Royal Postgraduate Medical School, London, and the United Kingdom Transplant Service, Bristol, United Kingdom.

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David Sansom MA, PhD, MRCP

David Sansom MA, PhD, MRCP

Rheumatology Unit, Department of Medicine, Royal Postgraduate Medical School, London, and the United Kingdom Transplant Service, Bristol, United Kingdom.

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Mark J. Walport PhD

Mark J. Walport PhD

Rheumatology Unit, Department of Medicine, Royal Postgraduate Medical School, London, and the United Kingdom Transplant Service, Bristol, United Kingdom.

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First published: August 1988
Citations: 21

Abstract

We used an oligonucleotide probe specific for a polymorphic sequence in the HLA-DQβ gene to investigate the role of DQ polymorphism in genetic susceptibility to Felty's syndrome (FS) and rheumatoid arthritis (RA). The sequence of this gene was identified from a complementary DNA library derived from an RA patient's B lymphoblastoid cell line. With this probe, we studied the prevalence of the specific DQβ allele in DR4 positive FS patients, RA patients, and normal control subjects. Significantly more FS patients (17 of 25) showed hybridization with this oligonucleotide probe, compared with the number of DR4 positive non-FS RA patients (7 of 23) and normal controls (7 of 21). The findings indicate that genes linked to the DQ region are important in determining susceptibility to FS.

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