The 8.5-kb PstI allele of the stress protein gene, Hsp70-2: an independent risk factor for systemic lupus erythematosus in African Americans?

Journal Article (Journal Article)

SLE is dramatically more prevalent in persons of African descent than in other populations. Several genes in the class III region of the MHC have been considered as potential susceptibility loci for this disorder, but the primary association(s) remains unknown. The stress protein gene, hsp70-2, is of special interest in this regard because it encodes a protein functionally relevant to antigen processing and presentation and has itself been identified as a putative susceptibility locus in organ-specific autoimmune diseases in Caucasians. To clarify the relationship of the hsp70-2 gene to SLE in African Americans, genomic DNA from 46 patients and 42 appropriately matched control subjects was analyzed for an RFLP of the hsp70-2 gene using the probe pH2.3 and the restriction endonuclease PstI, which identifies alleles of 8.5 and 9.0 kb. The 8.5-kb hsp70-2 allele was associated with SLE in this population (X2 = 8.2473, p = 0.0044). This association was not due to linkage disequilibrium with the C4A deletion or with HLA-DR3, as has been reported in Caucasians with IDDM. These data suggest that the 8.5-kb hsp70-2 allele may be an independent susceptibility marker for SLE in African Americans.

Full Text

Duke Authors

Cited Authors

  • Jarjour, W; Reed, AM; Gauthier, J; Hunt, S; Winfield, JB

Published Date

  • January 1996

Published In

Volume / Issue

  • 45 / 1

Start / End Page

  • 59 - 63

PubMed ID

  • 8655362

International Standard Serial Number (ISSN)

  • 0198-8859

Digital Object Identifier (DOI)

  • 10.1016/0198-8859(95)00153-0


  • eng

Conference Location

  • United States