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  • Title: Association of programmed cell death 1 polymorphisms and systemic lupus erythematosus: a meta-analysis.
    Author: Lee YH, Woo JH, Choi SJ, Ji JD, Song GG.
    Journal: Lupus; 2009 Jan; 18(1):9-15. PubMed ID: 19074163.
    Abstract:
    Programmed cell death 1 (PDCD1 or PD1) polymorphisms have been inconsistently reported to be associated with systemic lupus erythematosus (SLE). The aim of this study was to explore whether the PDCD1 polymorphisms confer a susceptibility to SLE and lupus nephritis (LN). We conducted a meta-analysis on the association of PDCD1 polymorphisms with SLE in overall and specific ethnic populations. A total of 15 separate comparisons were included in this meta-analysis consisting of nine Europeans, two Latin Americans, two Africans, one Asian and one unknown participant. In subgroup analysis, the PD1.3A allele was significantly associated with SLE in Latin Americans (OR = 3.073, 95% CI = 1.416-6.461, P = 0.003), but not in patients of European and African decent. The PD1.3A allele was a risk factor for LN in European descendants (OR = 2.207, 95% CI = 1.488-3.467, P < 0.001). The PD1.5C allele was a risk factor for SLE in Europeans (OR = 1.297, 95% CI = 1.024-1.643, P = 0.031). In conclusion, this meta-analysis demonstrated an association of the PD1.3A allele with LN in European and SLE in Latin-American populations. Furthermore, the PD1.5C allele was associated with SLE susceptibility in Europeans.
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