PMID- 37431434 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230718 IS - 2514-1775 (Electronic) IS - 2514-1775 (Linking) VI - 7 IP - 2 DP - 2023 TI - Discontinuation rate of sulfasalazine, leflunomide and methotrexate due to adverse events in a real-life setting (NOR-DMARD). PG - rkad053 LID - 10.1093/rap/rkad053 [doi] LID - rkad053 AB - OBJECTIVES: MTX, LEF and SSZ are conventional synthetic DMARDs (csDMARDs) with a well-established role in the treatment of RA. We aimed to estimate and compare the relative risks for adverse events (AEs) and the discontinuation of these drugs owing to AEs. METHODS: We included all 3339 patients from the NOR-DMARD study treated with MTX, LEF or SSZ in monotherapy. All reported AEs were compared between treatment groups using quasi-Poisson regression. In addition, drug retention rates were analysed using Kaplan-Meier estimates with Cox regression to control for possible confounders. We analysed drug retention rates and cumulative risk of discontinuation attributable to AEs using the Kaplan-Meier estimator. We assessed age, sex, baseline DAS in 28 joints with ESR (DAS28-ESR), seropositivity, prednisolone use, previous DMARD use, year of inclusion and co-morbidity as possible cofounders. RESULTS: We found that the discontinuation rate attributable to AEs was significantly higher for LEF and SSZ than for MTX. After the first year, it was 13.7% (95% CI 12.2, 15.2), 39.6% (95% CI 34.8, 44) and 43.4% (95% CI 38.2, 48.1) for MTX, SSZ and LEF, respectively. Similar results were found when adjusting for confounders. The overall AEs were comparable across the treatment groups. The AE profile was as expected for each drug. CONCLUSION: Our work has shown a similar AE profile of csDMARDs to previous data. However, higher discontinuation rates for SSZ and LEF cannot be explained easily from AE profiles. CI - (c) The Author(s) 2023. Published by Oxford University Press on behalf of the British Society for Rheumatology. FAU - Mielnik, Pawel AU - Mielnik P AUID- ORCID: 0000-0002-3894-5371 AD - Section for Rheumatology, Department for Neurology, Rheumatology and Physical Medicine, Helse Forde, Forde, Norway. FAU - Sexton, Joseph AU - Sexton J AD - Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway. FAU - Fagerli, Karen M AU - Fagerli KM AD - Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway. FAU - Bakland, Gunnstein AU - Bakland G AD - Department of Rheumatology, University Hospital of Northern Norway, Tromso, Norway. FAU - Hu, Yi AU - Hu Y AD - Lillehammer Hospital for Rheumatic Diseases, Lillehammer, Norway. FAU - Kristianslund, Eirik K AU - Kristianslund EK AD - Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway. FAU - Hoff, Mari AU - Hoff M AD - Department of Rheumatology, St. Olavs Hospital, Trondheim, Norway. AD - Department of Neuromedicine and Movement Science, NTNU-Norwegian University of Science and Technology, Trondheim, Norway. FAU - Wierod, Ada AU - Wierod A AD - Department of Rheumatology, Vestre Viken/Drammen Hospital, Drammen, Norway. FAU - Kvien, Tore K AU - Kvien TK AD - Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway. AD - Faculty of Medicine, University of Oslo, Oslo, Norway. LA - eng PT - Journal Article DEP - 20230616 PL - England TA - Rheumatol Adv Pract JT - Rheumatology advances in practice JID - 101736676 PMC - PMC10329773 OTO - NOTNLM OT - LEF OT - MTX OT - RA OT - SSZ OT - adverse events OT - discontinuation EDAT- 2023/07/11 06:41 MHDA- 2023/07/11 06:42 PMCR- 2023/06/16 CRDT- 2023/07/11 03:37 PHST- 2023/01/26 00:00 [received] PHST- 2023/06/05 00:00 [accepted] PHST- 2023/07/11 06:42 [medline] PHST- 2023/07/11 06:41 [pubmed] PHST- 2023/07/11 03:37 [entrez] PHST- 2023/06/16 00:00 [pmc-release] AID - rkad053 [pii] AID - 10.1093/rap/rkad053 [doi] PST - epublish SO - Rheumatol Adv Pract. 2023 Jun 16;7(2):rkad053. doi: 10.1093/rap/rkad053. eCollection 2023.