en
Scientific article
English

Analysis of TAP2 and HLA-DP gene polymorphism in psoriasis

Published inHuman immunology, vol. 40, no. 4, p. 299-302
Publication date1994
Abstract

TAP2 is a gene, located between HLA-DP and HLA-DQ, whose products form a transporter molecule involved in endogenous antigen processing. Polymorphic residues have been described in this gene. TAP2 is of particular interest because its involvement in antigen presentation makes it a candidate for a disease susceptibility gene. In psoriasis, two clinical subtypes analogous to the situation in diabetes type I with early onset and family history and type II with later onset and without family history have been described. We have previously shown that type I but not type II psoriasis is associated with the HLA-DRB1*0701/2, -DQA1*0201, -DQB1*0303 haplotype. To investigate whether this haplotype extends to include particular TAP2 and/or DP alleles, we tested the TAP2 and HLA-DP alleles of a control group (n = 199), patients with psoriasis type I (n = 66), and patients with psoriasis type II (n = 35) by hybridization with SSOs. Our data show that there is no significant correlation between TAP2 and/or HLA-DP gene polymorphism and psoriasis type I and/or type II. We conclude that disease association in type I psoriasis is associated with the extended haplotype HLA-B57, -Cw6, -DRB1*0701/2, -DQA1*0201, -DQB1*0303.

Keywords
  • ATP-Binding Cassette Transporters/*genetics
  • Adult
  • DNA/genetics
  • HLA-DP Antigens/*genetics
  • HLA-DQ Antigens/genetics
  • HLA-DR Antigens/genetics
  • HLA-DRB1 Chains
  • Haplotypes/genetics
  • Humans
  • Oligonucleotides/genetics
  • Polymorphism, Genetic/*genetics
  • Psoriasis/*genetics
Affiliation Not a UNIGE publication
Citation (ISO format)
FAKLER, J. W. et al. Analysis of TAP2 and HLA-DP gene polymorphism in psoriasis. In: Human immunology, 1994, vol. 40, n° 4, p. 299–302.
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ISSN of the journal0198-8859
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