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PTPN22 C1858T and the risk of psoriasis: a meta-analysis

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Abstract

Psoriasis is a chronic autoimmune skin disease with both environmental and genetic risk factors. Previous studies of the association between psoriasis and PTPN22 C1858T (rs2476601), a gain of function variant associated with a stronger inhibitory effect of T-lymphocytes, have produced inconsistent results. The purpose of the current study is to evaluate the association between PTPN22 C1858T and psoriasis using meta-analysis to: (1) have a sufficient sample size for detecting a weak association; and (2) to explore the heterogeneity between studies. A meta-analysis based on random-effects model was performed with ten studies (3,334 psoriasis cases and 5,753 controls) identified from a literature search. A non-significantly positive association between psoriasis and the PTPN22 T1858 was observed [summary allelic odds ratio (OR) = 1.15, 95 % confidence interval (CI): 1.00–1.33] and the association appears stronger among subjects with psoriatic arthritis (summary allelic OR = 1.23, 95 % CI: 1.00–1.52). A null association between PTPN22 T1858 and early-onset psoriasis was observed (summary allelic OR = 1.08, 95 % CI: 0.92–1.28). The current analysis showed a non-significantly positive association between psoriasis and the PTPN22 T1858 allele, and the association appeared stronger among subjects with psoriatic arthritis. Future studies of psoriasis should incorporate gene-environment interaction in the analysis and pay attention to the heterogeneity of psoriasis cases and bias associated with population stratification.

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Authors and Affiliations

  1. Department of Dermatology, Show-Chwan Memorial Hospital, Changhua, Taiwan

    Yu-Fu Chen

  2. National Institute of Cancer Research, National Health Research Institutes, 1F No 367, Sheng-Li Road, Tainan, 70456, Taiwan

    Jeffrey S. Chang

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  1. Yu-Fu Chen
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  2. Jeffrey S. Chang
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Correspondence to Jeffrey S. Chang.

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Chen, YF., Chang, J.S. PTPN22 C1858T and the risk of psoriasis: a meta-analysis. Mol Biol Rep 39, 7861–7870 (2012). https://doi.org/10.1007/s11033-012-1630-z

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  • DOI: https://doi.org/10.1007/s11033-012-1630-z

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