Molecular analysis of HLA class II genes in primary sjögren's syndrome. A study of Israeli Jewish and Greek Non-Jewish patients

Anat Roitberg-Tambur*, Adam Friedmann, Cilly Safirman, Alice Markitziu, Eldad Ben-Chetrit, Alan Rubinow, Haralampos M. Moutsopoulos, Efthymois Stavropoulos, Fotini N. Skopouli, Hanah Margalit, Chaim Brautbar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

In an attempt to define the role of HLA class II genes in predisposition to primary Sjörgen's syndrome, patients of two different ethnic groups (Israeli Jews and Greeks of non-Jewish origin) suffering from this disorder were studied. Oligonucleotide genotyping revealed the majority in both groups to carry either DRB1 *1101 or DRB1*1104, alleles tha re in linkage disequilibrium with DQB1*0301 and DQA1*0501. The high frequency of the two alleles in these SS patients is in contrast with the accepted association of primary SS with HLA-DR3 in Italian and American individuals. Molecular analysis of DQB1 and DQA1 alleles found in American Caucasian and American black SS (or SLE) patients demonstrated high frequencies of DQB1*0201 and DQA1*0501. The fact that the majority of SS patients, across racial and ethnic boundaries, carry a common allele, DQA1*0501, implies its involvement in the predisposition t to primary SS. Based on sequence analysis and the computer imaging of the HLA class II molecule structure, a hypothetical model for the role of the DQ molecule in promoting primary SS us proposed.

Original languageEnglish (US)
Pages (from-to)235-242
Number of pages8
JournalHuman Immunology
Volume36
Issue number4
DOIs
StatePublished - Apr 1993

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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