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Association between obesity and remission in rheumatoid arthritis patients treated with disease-modifying anti-rheumatic drugs.

ABSTRACT: The aim of this study was to investigate the association between body-mass index (BMI) and remission in RA patients receiving conventional synthetic (cs-) or the biological Disease-Modifying Antirheumatic Drug (DMARD), tocilizumab. Individual participant data (IPD) were pooled from five trials investigating tocilizumab and/or csDMARDs therapy (primarily methotrexate) for RA. Time to first remission was recorded according to the Simplified Disease Activity Index (SDAI) and Clinical Disease Activity Index (CDAI). BMI was classified according to WHO definitions. Associations between baseline BMI and remission were assessed by Cox-proportional hazard analysis. IPD were available from 5428 patients treated with tocilizumab?±?csDMARDs (n?=?4098) or csDMARDs alone (n?=?1330). Of these, 1839 (33.9%) had normal BMI, 1780 (32.8%) overweight, 1652 (30.4%) obese and 157 (2.9%) were underweight. Obesity, compared to normal BMI, was associated with less frequent remission using SDAI (adjusted HR 0.80 [95% CI 0.70-0.92]) and CDAI (adjusted HR 0.77 [0.68-0.87]). As continuous variable, increased BMI was associated with less frequent SDAI (P?=?0.001) and CDAI (P?=?0.001) defined remission. No heterogeneity in identified associations was observed between studies (P?=?0.08) or treatments (P?=?0.22). Obesity was negatively associated with RA disease remission regardless of RA therapy, suggesting that baseline BMI should be considered as a stratification factor in future RA trials.

SUBMITTER: Abuhelwa AY

PROVIDER: S-EPMC7596471 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Association between obesity and remission in rheumatoid arthritis patients treated with disease-modifying anti-rheumatic drugs.

Abuhelwa Ahmad Y AY Hopkins Ashley M AM Sorich Michael J MJ Proudman Susanna S Foster David J R DJR Wiese Michael D MD

Scientific reports 20201029 1

The aim of this study was to investigate the association between body-mass index (BMI) and remission in RA patients receiving conventional synthetic (cs-) or the biological Disease-Modifying Antirheumatic Drug (DMARD), tocilizumab. Individual participant data (IPD) were pooled from five trials investigating tocilizumab and/or csDMARDs therapy (primarily methotrexate) for RA. Time to first remission was recorded according to the Simplified Disease Activity Index (SDAI) and Clinical Disease Activi ...[more]

PMID: 33122725

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Project description:BackgroundKnowledge of factors that contribute to non-persistence with disease modifying anti-rheumatic drugs (NP) is essential to improve rheumatoid arthritis (RA) outcomes. Aims of the study were to investigate patient's motivations and risk factors for NP in a cohort of early RA patients.MethodsUp to September 2012, data from 149 patients, who had at least 1 year of follow-up, at least one drug indication, and at least 2 consecutive six-months-apart rheumatic evaluations that included assessment of compliance were reviewed. NP and patient's motivations of NP were evaluated according to a questionnaire. NP was defined when patients referred that they had completely stop RA medication, "Sometimes", "Almost always" or "Always". Patients had to pay for their medication.Descriptive statistics and logistic regression models were used. Statistical significance was set at a p value of less than 0.05. The study was approved by the internal review board.ResultsUp to cut-off, 715 questionnaires were applied to 149 patients, who had follow-up of 58.7?±?27.9 months and were indicated 2.4?±?0.7 DMARDs/patient/follow-up.Patients were most frequently female (88.6%), middle-aged ([mean?±?SD] age of 38.5?±?12.8 years) with lower-middle/lower socio-economic status (87.9%) and scholarship of 11?±?3.9 years.Ninety-nine (66.4%) patients were NP and filled 330 questionnaires. Multivariate analysis showed that years of formal education (OR: 1.12, 95% CI: 1.1-1.24, p?=?0.03), perception of at least some difficulty to find arthritis medication (OR: 5.68, 95% CI: 2.48-13, p?=?0.000) and perception that arthritis medication is expensive (OR: 5.27, 95% CI: 2.1-13.84, p?=?0.001) at the first evaluation of patient's compliance were all predictors of NP.Among the 99 NP patients, 25 (25.3%) were recurrent-NP and accumulated more disease activity. The combination of both reasons of NP ("Because it was not available at the drugstore" and "Because the medication is very expensive") when selected at the first evaluation of compliance was the only variable to predict recurrent NP, OR: 4.8, 95% CI: 1.1-20.8, p?=?0.04.ConclusionsHealth systems should provide (first line) treatment for RA as a strategy to improve compliance with therapy and clinical outcomes, particularly in vulnerable populations.

Dataset Information

Association between obesity and remission in rheumatoid arthritis patients treated with disease-modifying anti-rheumatic drugs.

Publications

Association between obesity and remission in rheumatoid arthritis patients treated with disease-modifying anti-rheumatic drugs.

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