Research

Confirmation of TNIP1 and IL23A as susceptibility loci for psoriatic arthritis


Reference:

Bowes, J., Orozco, G., Flynn, E., Ho, P., Brier, R., Marzo-Ortega, H., Coates, L., McManus, R., Ryan, A. W., Kane, D., Korendowych, E., McHugh, N. J., FitzGerald, O., Packham, J., Morgan, A. W., Bruce, I. N. and Barton, A., 2011. Confirmation of TNIP1 and IL23A as susceptibility loci for psoriatic arthritis. Annals of the Rheumatic Diseases, 70 (9), pp. 1641-1644.

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http://dx.doi.org/10.1136/ard.2011.150102

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Abstract

Objectives To investigate a shared genetic aetiology for skin involvement in psoriasis and psoriatic arthritis (PsA) by genotyping single-nucleotide polymorphisms (SNPs), reported to be associated in genome-wide association studies of psoriasis, in patients with PsA. Methods SNPs with reported evidence for association with psoriasis were genotyped in a PsA case and control collection from the UK and Ireland. Genotype and allele frequencies were compared between PsA cases and controls using the Armitage test for trend. Results Seven SNPs mapping to the IL1RN, TNIP1, TNFAIP3, TSC1, IL23A, SMARCA4 and RNF114 genes were successfully genotyped. The IL23A and TNIP1 genes showed convincing evidence for association (rs2066808, p = 9.1 x 10(-7); rs17728338, p = 3.5 x 10(-5), respectively) whilst SNPs mapping to the TNFAIP3, TSC1 and RNF114 genes showed nominal evidence for association (rs610604, p = 0.03; rs1076160, p = 0.03; rs495337, p = 0.0025). No evidence for association with IL1RN or SMARCA4 was found but the power to detect association was low. Conclusions SNPs mapping to previously reported psoriasis loci show evidence for association to PSA, thus supporting the hypothesis that the genetic aetiology of skin involvement is the same in both PsA and psoriasis.

Details

Item Type Articles
CreatorsBowes, J., Orozco, G., Flynn, E., Ho, P., Brier, R., Marzo-Ortega, H., Coates, L., McManus, R., Ryan, A. W., Kane, D., Korendowych, E., McHugh, N. J., FitzGerald, O., Packham, J., Morgan, A. W., Bruce, I. N. and Barton, A.
DOI10.1136/ard.2011.150102
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URLURL Type
http://dx.doi.org/10.1136/ard.2011.150102Free Full-text
DepartmentsFaculty of Science > Pharmacy & Pharmacology
Faculty of Humanities & Social Sciences > Health
RefereedYes
StatusPublished
ID Code25245

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