RESUMEN
Association between elevated C-reactive protein (CRP) serum levels and subclinical atherosclerosis and cardiovascular (CV) events was described in rheumatoid arthritis (RA). CRP, HNF1A, LEPR, GCKR, NLRP3, IL1F10, PPP1R3B, ASCL1, HNF4A and SALL1 exert an influence on elevated CRP serum levels in non-rheumatic Caucasians. Consequently, we evaluated the potential role of these genes in the development of CV events and subclinical atherosclerosis in RA patients. Three tag CRP polymorphisms and HNF1A, LEPR, GCKR, NLRP3, IL1F10, PPP1R3B, ASCL1, HNF4A and SALL1 were genotyped in 2,313 Spanish patients by TaqMan. Subclinical atherosclerosis was determined in 1,298 of them by carotid ultrasonography (by assessment of carotid intima-media thickness-cIMT-and presence/absence of carotid plaques). CRP serum levels at diagnosis and at the time of carotid ultrasonography were measured in 1,662 and 1,193 patients, respectively, by immunoturbidimetry. Interestingly, a relationship between CRP and CRP serum levels at diagnosis and at the time of the carotid ultrasonography was disclosed. However, no statistically significant differences were found when CRP, HNF1A, LEPR, GCKR, NLRP3, IL1F10, PPP1R3B, ASCL1, HNF4A and SALL1 were evaluated according to the presence/absence of CV events, carotid plaques and cIMT after adjustment. Our results do not confirm an association between these genes and CV disease in RA.
Asunto(s)
Artritis Reumatoide/sangre , Artritis Reumatoide/genética , Aterosclerosis/sangre , Aterosclerosis/genética , Proteína C-Reactiva/genética , Enfermedades Cardiovasculares/sangre , Enfermedades Cardiovasculares/genética , Anciano , Artritis Reumatoide/epidemiología , Aterosclerosis/diagnóstico por imagen , Aterosclerosis/epidemiología , Enfermedades Cardiovasculares/diagnóstico por imagen , Enfermedades Cardiovasculares/epidemiología , Femenino , Predisposición Genética a la Enfermedad , Genotipo , Humanos , Masculino , Persona de Mediana Edad , Polimorfismo Genético , Factores de Riesgo , Población BlancaRESUMEN
INTRODUCTION: We have hypothesized that incompatibility between the G1m genotype of the patient and the G1m1 and G1m17 allotypes carried by infliximab (INX) and adalimumab (ADM) could decrease the efficacy of these anti-tumor necrosis factor (anti-TNF) antibodies in the treatment of rheumatoid arthritis (RA). METHODS: The G1m genotypes were analyzed in three collections of patients with RA totaling 1037 subjects. The first, used for discovery, comprised 215 Spanish patients. The second and third were successively used for replication. They included 429 British and Greek patients and 393 Spanish and British patients, respectively. Two outcomes were considered: change in the Disease Activity Score in 28 joint (ΔDAS28) and the European League Against Rheumatism (EULAR) response criteria. RESULTS: An association between less response to INX and incompatibility of the G1m1,17 allotype was found in the discovery collection at 6 months of treatment (P = 0.03). This association was confirmed in the replications (P = 0.02 and 0.08, respectively) leading to a global association (P = 0.001) that involved a mean difference in ΔDAS28 of 0.4 units between compatible and incompatible patients (2.3 ± 1.5 in compatible patients vs. 1.9 ± 1.5 in incompatible patients) and an increase in responders and decrease in non-responders according to the EULAR criteria (P = 0.03). A similar association was suggested for patients treated with ADM in the discovery collection, but it was not supported by replication. CONCLUSIONS: Our results suggest that G1m1,17 allotypes are associated with response to INX and could aid improved therapeutic targeting in RA.
Asunto(s)
Adalimumab/genética , Artritis Reumatoide/tratamiento farmacológico , Artritis Reumatoide/genética , Inmunoglobulina G/genética , Infliximab/genética , Adalimumab/uso terapéutico , Adulto , Antirreumáticos/uso terapéutico , Artritis Reumatoide/inmunología , Secuencia de Bases , Femenino , Genotipo , Humanos , Alotipos de Inmunoglobulinas , Infliximab/uso terapéutico , Masculino , Persona de Mediana Edad , Datos de Secuencia Molecular , Polimorfismo de Nucleótido Simple , Resultado del Tratamiento , Factor de Necrosis Tumoral alfa/antagonistas & inhibidoresRESUMEN
INTRODUCTION: In this study, our aim was to elucidate the role of four polymorphisms identified in a prior large genome-wide association study (GWAS) in which the investigators analyzed the responses of patients with rheumatoid arthritis (RA) to treatment with tumor necrosis factor inhibitors (TNFi). The authors of that study reported that the four genetic variants were significantly associated. However, none of the associations reached GWAS significance, and two subsequent studies failed to replicate these associations. METHODS: The four polymorphisms (rs12081765, rs1532269, rs17301249 and rs7305646) were genotyped in a total of 634 TNFi-treated RA patients of Spanish Caucasian origin. Four outcomes were evaluated: changes in the Disease Activity Score in 28 joints (DAS28) after 6 and 12 months of treatment and classification according to the European League Against Rheumatism (EULAR) response criteria at the same time points. Association with DAS28 changes was assessed by linear regression using an additive genetic model. Contingency tables of genotype and allele frequencies between EULAR responder and nonresponder patients were compared. In addition, we combined our data with those of previously reported studies in a meta-analysis including 2,998 RA patients. RESULTS: None of the four genetic variants showed an association with response to TNFi in any of the four outcomes analyzed in our Spanish patients. In addition, only rs1532269 yielded a suggestive association (P = 0.0033) with the response to TNFi when available data from previous studies were combined in the meta-analysis. CONCLUSION: Our data suggest that the rs12081765, rs1532269, rs17301249 and rs7305646 genetic variants do not have a role as genetic predictors of TNFi treatment outcomes.
Asunto(s)
Antirreumáticos/uso terapéutico , Artritis Reumatoide/tratamiento farmacológico , Artritis Reumatoide/genética , Polimorfismo de Nucleótido Simple , Factor de Necrosis Tumoral alfa/antagonistas & inhibidores , Anciano , Femenino , Estudio de Asociación del Genoma Completo , Genotipo , Humanos , Masculino , Persona de Mediana Edad , Resultado del TratamientoRESUMEN
BACKGROUND: The IL-6 -174G/C genetic variant has recently been associated with the clinical response to etanercept therapy in rheumatoid arthritis (RA) patients. Considering previous results, the aim of our study was to validate the role of this polymorphism as a predictor of the antitumor necrosis factor (anti-TNF) treatment outcome in RA. MATERIALS AND METHODS: Our study population was composed of 199 Spanish patients with RA receiving anti-TNF therapy. The IL-6 -174G/C (rs1800795) genetic variant was genotyped using the TaqMan allelic discrimination technology. Patients were classified, according to the European League Against Rheumatism (EULAR) criteria, as responders (good and moderate response) and nonresponders at 6, 12, 18, and 24 months after the first infusion. RESULTS: The -174*G allele was significantly associated with a good or moderate EULAR response at 12 [P=0.015, odds ratio (OR)=2.93, 95% confidence interval (CI) 1.29-6.70], 18 (P=4.54E-03, OR=5.17, 95% CI 1.80-14.85), and 24 months (P=4.54E-03, OR=14.86, 95% CI 2.91-75.91). A meta-analysis combining these data with the results from a previous study confirmed this association (P=1.89E-02, OR=1.80, 95% CI 1.13-2.87, at 12 months). CONCLUSION: Our results support the role of the -174G/C IL-6 polymorphism as a genetic marker of responsiveness to anti-TNF therapy.
Asunto(s)
Antirreumáticos/uso terapéutico , Artritis Reumatoide/tratamiento farmacológico , Inmunoglobulina G/uso terapéutico , Interleucina-6/genética , Regiones Promotoras Genéticas , Receptores del Factor de Necrosis Tumoral/uso terapéutico , Factor de Necrosis Tumoral alfa/antagonistas & inhibidores , Adalimumab , Adulto , Anciano , Anticuerpos Monoclonales/uso terapéutico , Anticuerpos Monoclonales Humanizados/uso terapéutico , Antirreumáticos/administración & dosificación , Artritis Reumatoide/genética , Citosina , Etanercept , Femenino , Marcadores Genéticos , Genotipo , Guanina , Humanos , Inmunoglobulina G/administración & dosificación , Infliximab , Masculino , Persona de Mediana Edad , Polimorfismo de Nucleótido Simple , Receptores del Factor de Necrosis Tumoral/administración & dosificación , Reproducibilidad de los Resultados , Resultado del TratamientoRESUMEN
OBJECTIVE: Signal-transducer and activator of transcription protein 3 (STAT3) gene encodes a transducer and transcription factor that plays an important role in many cellular processes such as cell growth, apoptosis and immune response. Several STAT3 genetic variants have been associated to different autoimmune diseases. Our aim was to reveal the possible STAT3 influence in other immune-mediated diseases such as psoriatic arthritis (PsA) and Behcet disease (BD). METHODS: The STAT3 rs744166 and rs2293152 polymorphisms were genotyped using predesigned TaqMan® assays in a total of 335 PsA patients, 217 BD patients, and 1844 ethnically matched healthy controls of Spanish Caucasian origin. RESULTS: A statistically significant association of the STAT3 rs744166(∗)G allele with PsA was observed (P-value=1.36×10(-3), OR 1.35). The detected effect was more evident when the rs744166(∗)GG homozygote frequencies were compared between PsA patients and controls (genotype P-value=9.77×10(-5), OR 1.82). In contrast, the allele and genotypic distributions of rs744166 polymorphism showed no significant differences between patients with BD and control subjects (allelic P-value=0.80, OR 1.03). Additionally, no evidence of association was detected between the rs2293152 genetic variant and both studied diseases. CONCLUSION: Our results suggest for the first time that the STAT3 gene might be involved in PsA but not in Behcet's disease predisposition.