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Go, Dong Jin,Shin, Kichul,Baek, Han Joo,Kang, Seong Wook,Kang, Young Mo,Jun, Jae Bum,Lee, Yun Jong,Park, Sung Hwan,Song, Yeong Wook AMB ACTA MEDICA BELGICA 2018 CLINICAL RHEUMATOLOGY Vol.37 No.2
<P>The purpose of this study is to examine the patient-reported outcomes (PRO) after discontinuing nonsteroidal anti-inflammatory drugs (NSAIDs) and clinical factors associated with a favorable outcome in patients with rheumatoid arthritis (RA) in remission or with low-disease activity (LDA). A 16-week prospective open-label trial was conducted at eight rheumatology clinics in Korea. RA patients with 28-joint disease activity score based on erythrocyte sedimentation rate (DAS28-ESR) < 3.2 who were on NSAIDs for more than a month were enrolled, and NSAIDs were discontinued. Acetaminophen (AAP) was used as the rescue medication, and NSAIDs were restarted when joint pain was intolerable with AAP. The endpoint was to analyze the group of patients who continued to withdraw NSAIDs. Among 109 enrolled patients, 105 completed the 16-week follow-up. Eighty-nine (84.8%) patients remained without restarting NSAIDs. In these patients, there was a slight increase in their pain levels compared with baseline (median 14.0 versus 19.0 using the pain-visual analog scale, p = 0.010). However, changes in DAS28-ESR (p = 0.638) and routine assessment of patient index data 3 (RAPID-3) (p = 0.128) were insignificant. Moreover, 66 (62.9%) patients showed sustained effectiveness on PRO without restarting NSAIDs. In the multivariate regression models, joint swelling was the detrimental factor in NSAID withdrawal (odds ratio [OR] 0.149, 95% confidence interval [CI] 0.033-0.680, p = 0.014) and sustained effectiveness (OR 0.284, 95% CI 0.091-0.883, p = 0.030). Joint pain in RA patients in remission or with LDA can be well managed without NSAIDs, especially in those without swollen joints at the time of cessation.</P>
Association between susceptibility to rheumatoid arthritis and PADI4 polymorphisms: a meta-analysis
Lee, Y. H.,Bae, S. C. AMB ACTA MEDICA BELGICA 2016 CLINICAL RHEUMATOLOGY Vol.35 No.4
<P>The objective of the study was to determine by meta-analysis whether polymorphisms of the gene encoding peptidylarginine deiminase 4 (PADI4) are associated with susceptibility to rheumatoid arthritis (RA). A literature review was conducted to identify data sets that described analyses of genetic association between PADI4 polymorphisms and RA. Data sets were collated and a meta-analysis was performed, with a specific focus on associations within Caucasian and Asian populations. A total of 15,947 RA cases and 22,696 controls that were taken from 28 studies in 24 papers were included in this study. Meta-analysis showed a significant association between allele 2 of the PADI4_94 polymorphism and RA in the overall population (odds ratio [OR] = 1.155, 95 % confidence interval [CI] = 1.069-1.249, p = 2.7 x 10(-5)). Stratification by ethnicity revealed an association between PADI4_94 allele 2 and RA in Asians (OR = 1.273, 95 % CI = 1.193-1.359, p < 1.0 x 10(-9)), but not in Caucasians (OR = 1.024, 95 % CI = 0.973-1.078, p = 0.358). However, meta-analysis using homozygote contrast showed an association between PADI4_94 allele 2 and RA in both Asians (OR = 2.311, 95 % CI = 1.1.858-2.875, p < 1.0 x 10(-9)) and Caucasians (OR = 1.523, 95 % CI = 1.157-2.004, p = 0.008). Meta-analysis also revealed an association between allele 2 of the PADI4_104 polymorphism and RA in both Asians (OR = 1.547, 95 % CI = 1.247-1.919, p = 7.1 x 10(-6)) and Caucasians (OR = 1.096, 95 % CI = 1.025-1.172, p = 0.008). Finally, meta-analysis showed an association between allele 2 of the PADI4_92 polymorphism and RA in Asians (OR = 1.263, 95 % CI = 1.153-1.384, p = 5.8 x 10(-8)), but not in Caucasians (OR = 1.123, 95 % CI = 0.980-1.287, p = 0.095). Meta-analysis indicated no association between allele 2 of either the PADI4_90 or PADI4_89 polymorphisms and RA in Asians. This meta-analysis revealed that the PADI4_94 and PADI_104 polymorphisms are associated with susceptibility to RA in Asians and Caucasians, and that the PADI4_92 polymorphism is associated with susceptibility to RA in Asians, but not in Caucasians.</P>
Lee, Y. H.,Bae, S. C. AMB ACTA MEDICA BELGICA 2016 CLINICAL RHEUMATOLOGY Vol.35 No.4
<P>The aim of this study was to determine whether the functional major histocompatibility complex II transactivator (MHC2TA) -168 A/G polymorphism is associated with susceptibility to rheumatoid arthritis (RA). A meta-analysis was conducted to estimate the association between the MHC2TA-168 A/G polymorphism and RA. A total of 15 comparative studies, which included 14,158 patients and 13,642 controls, were included in the meta-analysis. Based on the meta-analysis, there was no association between RA and the MHC2TA -168 G allele in the study subjects (OR = 1.046, 95 % CI = 0.987-1.108, p = 0.130) or Caucasians (OR = 1.027, 95 % CI = 0.986-1.070, p = 0.193). However, the country-specific meta-analysis revealed an association between the MHC2TA -168 G allele and RA in the Swedish population (OR = 1.131, 95 % CI = 1.023-1.250, p = 0.016). A direct comparison between rheumatoid factor (RF)-positive and RF-negative patients revealed that the frequency of the G allele was significantly lower in RF-positive patients (OR = 0.783, 95 % CI = 0.628-0.975, p = 0.029) than in RF-negative patients. This meta-analysis demonstrated that the MHC2TA -168 A/G polymorphism is not associated with susceptibility to RA in Caucasians.</P>