Case-control Association Study of Autoimmunity Associated Variants in PDCD1 and Juvenile Idiopathic Arthritis

Author(s): Christina Tejeda, Alaine K. Broadaway, Michael J. Ombrello, Milton R. Brown, Lori A. Ponder, Mina Rohani Pichavant, Gabriel Wang, Sheila Angeles-Han, Aimee Hersh, John Bohnsack, Karen N. Conneely, Michael Epstein, Sampath Prahalad*.

Journal Name: Current Rheumatology Reviews

Volume 13 , Issue 3 , 2017

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Abstract:

Purpose: Variants in the gene encoding Programmed Cell Death-1 (PDCD1) have been associated with susceptibility to Systemic Lupus Erythematosus and other autoimmune diseases. Given that clinically distinct autoimmune phenotypes share common genetic susceptibility factors, variants in PDCD-1 were tested for a possible association with Juvenile Idiopathic Arthritis (JIA).

Methods: Four Single Nucleotide Polymorphisms (SNPS) in the PDCD1 gene were genotyped and analyzed: rs7421861, rs11568821, rs10204525, and rs7568402 in 834 cases and 855 controls of Northern European ancestry. Each variant was examined for possible associations with JIA and then analyzed for association with JIA categories.

Results: PDCD1 variants showed no association with JIA in the cohort overall (rs7421861 p=0.63, rs11568821 p=0.13, rs10204525 p=0.31, and rs7568402 p=0.45). Stratification by JIA categories indicated a significant association between systemic JIA and PDCD1 rs7568402 (OR=0.53, p=0.0027), which remained significant after 10,000 permutations, but was not replicated in an independent multi-ethnic systemic JIA cohort. A nominal association between enthesitis-related arthritis and rs115668821 was also observed (OR=0.22, p=0.012).

Conclusion: Unlike other multiple autoimmune disease associated genetic variants, there was no association between PDCD1 variants and JIA or JIA categories

Keywords: Juvenile arthritis, genetics, PDCD1, association, juvenile idiopathic arthritis, single nucleotide polymorphisms.

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Article Details

VOLUME: 13
ISSUE: 3
Year: 2017
Page: [219 - 223]
Pages: 5
DOI: 10.2174/1573397113666170104123113

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