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T-cell receptor variable genes and genetic susceptibility to celiac disease: an association and linkage study.

T-cell receptor variable genes and genetic susceptibility to celiac disease: an association and linkage study.

Authors :
Roschmann E
Wienker TF
Gerok W
Volk BA
Source :
Gastroenterology [Gastroenterology] 1993 Dec; Vol. 105 (6), pp. 1790-6.
Publication Year :
1993

Abstract

Background: Genetic susceptibility of celiac disease is primarily associated with a particular combination of and HLA-DQA1/DQB1 gene; however, this does not fully account for the genetic predisposition. Therefore, the aim of this study was to examine whether T-cell receptor (TCR) genes may be susceptibility genes in celiac disease.<br />Methods: HLA class II typing was performed by polymerase chain reaction amplification in combination with sequence-specific oligonucleotide hybridization. TCR alpha (TCRA), TCR gamma (TCRG), and TCR beta (TCRB) loci were investigated by restriction fragment length polymorphism analysis.<br />Results: Allelic frequencies of TCRA, TCRG, and TCRB variable genes were compared between patients with celiac disease (n = 53) and control patients (n = 67), and relative risk (RR) estimates were calculated. The RR was 1.67 for allele C1 at TCRA1, 3.35 for allele D2 at TCRA2, 1.66 for allele B2 at TCRG, and 1.35 for allele B at TCRB, showing no significant association. Additionally, linkage analysis was performed in 23 families. The logarithm of odd scores for celiac disease vs. the TCR variable genes at TCRA, TCRG, and TCRB showed no significant linkage.<br />Conclusions: These data suggest that the analyzed TCR variable gene segments V alpha 1.2, V gamma 11, and V beta 8 do not play a major role in susceptibility to celiac disease.

Details

Language :
English
ISSN :
0016-5085
Volume :
105
Issue :
6
Database :
MEDLINE
Journal :
Gastroenterology
Publication Type :
Academic Journal
Accession number :
8253354
Full Text :
https://doi.org/10.1016/0016-5085(93)91077-u