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. 2020 Jan;87(1):13-23.
doi: 10.1016/j.jbspin.2019.04.002. Epub 2019 Apr 11.

Is prediction of clinical response to methotrexate in individual rheumatoid arthritis patients possible? A systematic literature review

Nadia M T Roodenrijs  1 , Marlies C van der Goes  2 , Paco M J Welsing  2 , Janneke Tekstra  2 , Jacob M van Laar  2 , Floris P J G Lafeber  2 , Johannes W J Bijlsma  2 , Johannes W G Jacobs  2
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Is prediction of clinical response to methotrexate in individual rheumatoid arthritis patients possible? A systematic literature review

Nadia M T Roodenrijs et al. Joint Bone Spine. 2020 Jan.

Abstract

Objectives: To identify, by a systematic literature review, predictors of clinical response to methotrexate treatment in rheumatoid arthritis patients, which would facilitate personalised treatment.

Methods: PubMed and Embase databases were searched for original articles. Additionally, congress abstracts of European League Against Rheumatism and American College of Rheumatology annual meetings of the past 2 years were screened. Articles describing predictors of clinical response to methotrexate after 3 to 6 months were included, since this reflects the time span used to determine treatment effectiveness and decide on treatment changes in treat-to-target recommendations.

Results: Thirty articles were included, containing 100 different predictors and 11 predictive models. Nineteen predictors and 2 predictive models were studied in multiple cohorts. Female gender was found to be a predictor of non-response in two studies (odds ratios 0.55 and 0.54), but these findings could not be replicated in two other studies. In two studies, smoking predicted non-response (adjusted odds ratios 0.35 and 0.60), although this was inconsistent over all response criteria assessed. Rheumatoid factor positivity predicted non-response in two studies (adjusted hazard ratio 0.61, adjusted odds ratio 0.4), but this was not found in three other studies. Heterogeneity in studies prohibited further comparison of predictive values between studies. Additionally, a validated epigenetic model was found (area under the curve 0.90 and 0.91).

Conclusions: No predictors were identified reliably predicting clinical response to methotrexate after 3 to 6 months in the individual patient: clinical predictors were weak. However, a promising epigenetic model was found that needs further validation.

Keywords: Clinical prediction; Methotrexate; Personalised medicine; Prognosis; Rheumatoid arthritis; Systematic literature review.

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