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Schiotis R, Bartolomé N, Sánchez A, Szczypiorska M, Sanz J, Cuende E, Collantes Estevez E, Martínez A, Tejedor D, Artieda M, Buzoianu A, Mulero J. Both baseline clinical factors and genetic polymorphisms influence the development of severe functional status in ankylosing spondylitis. PLoS One 2012; 7:e43428. [PMID: 22984424 PMCID: PMC3440408 DOI: 10.1371/journal.pone.0043428] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Accepted: 07/19/2012] [Indexed: 12/17/2022] Open
Abstract
Functional severity in ankylosing spondylitis (AS) patients is variable and difficult to predict early. The aim of our study was to assess whether a combination of baseline clinical factors and genetic markers may predict the development of severe functional status in AS. We performed a cross-sectional association study on AS patients included in the Spanish National Registry of Spondyloarthropathies—REGISPONSER. Bath Ankylosing Spondylitis Functional Index (BASFI) was standardized by adjusting for disease duration since the first symptoms (BASFI/t). We considered as severe functional status the values of BASFI/t in the top of the 60th (p60), 65th (p65), 70th (p70), and 75th (p75) percentile. We selected 384 single nucleotide polymorphisms (SNPs) distributed in 190 genes to be analyzed. The study cohort included 456 patients with mean age 50.8(±10.5) years and with mean disease duration since first symptoms 24.7 (±10.1) years. Older age at disease onset and neck pain at baseline showed statistical significant association with severe BASFI/t. Polymorphisms associated in the allele frequencies test with severe BASFI/t in all classifications were: rs2542151 (p60 [P = .04], p65 [P = .04], p70 [P = .001] and p75 [P = .001]) and rs2254441 (p60 [P = .004], p65 [P = .02], p70 [P = .01] and p75 [P<.001]).. Genotype association, after adjustment for covariates, found an association in three of the four patients' classifications for rs2542151 and in two of the classifications for rs2254441.Forward logistic regression did not identify any model with a good predictive power for severe functional development. In our study we identified clinical factors and 24 polymorphisms associated with development of severe functional status in AS patients. Validation of these results in other cohorts is required.
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Affiliation(s)
- Ruxandra Schiotis
- Department of Pharmacology, “Iuliu Hatieganu” University of Medicine and Pharmacy and SCBI- Rheumatology Department, Cluj-Napoca, Romania
- Department of Rheumatology, University Hospital “Reina Sofía”/IMIBIC, Córdoba, Spain
- * E-mail:
| | - Nerea Bartolomé
- Department of R+D, Progenika Biopharma SA, Derio-Vizcaya, Spain
| | - Alejandra Sánchez
- Department of Rheumatology, “Puerta de Hierro Majadahonda”, University Hospital, Madrid, Spain
| | | | - Jesús Sanz
- Department of Rheumatology, “Puerta de Hierro Majadahonda”, University Hospital, Madrid, Spain
| | - Eduardo Cuende
- Department of Rheumatology, University Hospital “Príncipe de Asturias”, Alcalá de Henares, Madrid, Spain
| | | | | | - Diego Tejedor
- Department of R+D, Progenika Biopharma SA, Derio-Vizcaya, Spain
| | - Marta Artieda
- Department of R+D, Progenika Biopharma SA, Derio-Vizcaya, Spain
| | - Anca Buzoianu
- Department of Pharmacology, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Juan Mulero
- Department of Rheumatology, “Puerta de Hierro Majadahonda”, University Hospital, Madrid, Spain
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Szczypiorska M, Sánchez A, Bartolomé N, Arteta D, Sanz J, Brito E, Fernández P, Collantes E, Martínez A, Tejedor D, Artieda M, Mulero J. ERAP1 polymorphisms and haplotypes are associated with ankylosing spondylitis susceptibility and functional severity in a Spanish population. Rheumatology (Oxford) 2011; 50:1969-75. [PMID: 21865284 DOI: 10.1093/rheumatology/ker229] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES The aim of this study was to assess the involvement of the endoplasmic reticulum aminopeptidase 1 (ERAP1) gene in AS susceptibility and functional severity in a Spanish population. METHODS Eight single nucleotide polymorphisms (SNPs) spanning the ERAP1 gene were genotyped by allele-specific fluorescent PCR in 300 AS Spanish patients and 300 spondylarthritis-free controls. The influence of the ERAP1 SNPs on the functional severity of AS was analysed with the BASFI corrected for disease duration. Association analyses with AS susceptibility and functional severity were performed. RESULTS Significant ERAP1 single marker association with AS susceptibility was found for five SNPs, namely rs30187 (allele T: P = 0.035), rs17482078 (allele C: P = 0.030), rs2287987 (allele T: P = 0.028), rs26653 (allele C: P = 0.041) and rs10050860 (allele C: P = 0.018). Three of the associated SNPs (rs17482078, rs2287987 and rs10050860) were in strong linkage disequilibrium. After imputing genotypes with the HapMap CEU data as reference, the strongest association was with rs41135 (P = 0.0046) in the 5'-upstream region of ERAP1. In addition, the SNP rs17481856 was found to be a risk factor for functional severity in AS and a borderline trend was observed for rs27044. CONCLUSIONS These results suggest that the ERAP1 gene is associated with genetic predisposition to AS and influences the functional severity of the disease in a Spanish population.
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Sánchez A, Szczypiorska M, Juanola X, Bartolomé N, Gratacós J, Zarco P, Collantes E, Artieda M, Martínez A, Tejedor D, Mulero J. Association of the intergenic single-nucleotide polymorphism rs10865331 (2p15) with ankylosing spondylitis in a Spanish population. J Rheumatol 2010; 37:2345-7. [PMID: 20810504 DOI: 10.3899/jrheum.100211] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVE A recent genome-wide association study has identified 2 single-nucleotide polymorphisms (SNP) associated with ankylosing spondylitis (AS), rs10865331 (2p15) and rs2242944 (21q22). We assessed the association of these SNP with AS in a Spanish population. METHODS Four hundred fifty-six patients with AS fulfilling the modified New York Criteria and 300 healthy donors were analyzed. Result. SNP rs10865331 (allele A: p = 0.039; genotype: p = 0.016) was significantly associated with AS, while no association was found for rs2242944. CONCLUSION This is the first study that replicates in an independent cohort the association of the intergenic SNP rs10865331 with susceptibility to AS.
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Affiliation(s)
- Alejandra Sánchez
- Laboratory of Rheumatology, Puerta de Hierro University Hospital, C/Joaquín Rodrigo 2, Majadahonda 28222, Madrid, Spain.
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