Melanoma risk in patients with rheumatoid arthritis treated with tumour necrosis factor alpha inhibitors: a systematic review and meta-analysis

Catherine M. Olsen, Kimme Hyrich, Lani L. Knight, Adele Green

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Abstract

Clinicians are concerned that treatment of rheumatoid arthritis (RA) with tumour necrosis factor alpha antagonists (TNF[alpha] biologics) may increase patients’ risk of melanoma compared with treatment with nonbiologic disease-modifying antirheumatic drugs (nbDMARDS). We aimed to assess the risk of melanoma in RA patients treated with TNF[alpha] biologics compared with RA patients treated with nbDMARDS. A secondary aim was to quantify the risk of melanoma in RA patients treated with TNF[alpha] biologics compared with the general population. We carried out a systematic review and meta-analysis searching Medline, Embase and the ISI Science Citation Index databases to January 2016. Cohort studies that enabled a quantitative assessment of the risk of melanoma in RA patients treated with TNF[alpha] biologics compared with either RA patients treated with nbDMARDS or the general population or both were included. Data were pooled using a random-effects model. From 812 articles, we identified six that fulfilled the inclusion criteria. Four studies reported on the risk of melanoma in RA patients treated with TNF[alpha] biologics compared with those treated with nbDMARDS, with a pooled effect estimate of 1.60 (95% confidence interval 1.16–2.19). Five reported on the risk of melanoma in RA patients treated with TNF[alpha] biologics compared with the general population, and the pooled effect estimate was 1.87 (95% confidence interval 1.53–2.30). There was no significant heterogeneity in either analysis. This systematic review and meta-analysis does not allay clinician’s fears and, while awaiting further evidence from large collaborative studies, this patient population may benefit from regular skin checks and counselling to avoid excessive sun exposure.
Original languageEnglish
Pages (from-to)517-23
Number of pages7
JournalMelanoma research
Volume26
Issue number5
DOIs
Publication statusPublished - Oct 2016

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