Association between malignancy risk and Janus kinase inhibitors versus tumour necrosis factor inhibitors in Korean patients with rheumatoid arthritis: A nationwide population-based studyopen access
- Authors
- Song, Yeo-Jin; Cho, Soo-Kyung; You, Seung-Hun; Kim, Jeong-Yeon; Kim, Hyoungyoung; Jung, Sun-Young; Sung, Yoon-Kyoung
- Issue Date
- Dec-2022
- Publisher
- BMJ Publishing Group
- Keywords
- Epidemiology; Rheumatoid Arthritis; Therapeutics
- Citation
- RMD Open, v.8, no.2, pp.1 - 10
- Indexed
- SCIE
SCOPUS
- Journal Title
- RMD Open
- Volume
- 8
- Number
- 2
- Start Page
- 1
- End Page
- 10
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/185148
- DOI
- 10.1136/rmdopen-2022-002614
- ISSN
- 2056-5933
- Abstract
- Objective To determine the risk of malignancy in Korean patients with rheumatoid arthritis (RA) receiving Janus kinase inhibitors (JAKis) compared with tumour necrosis factor inhibitors (TNFis). Methods A retrospective cohort of patients with RA initiating their first JAKi or TNFi was established using the Korean National Health Insurance database between 2015 and 2019. They were followed up from treatment initiation to the occurrence of malignancy, drug discontinuation, death or until December 2019. Baseline features of the patients were balanced through inverse probability of treatment weighting (IPTW) using a propensity score. A Cox proportional hazard model was established to estimate the HR for malignancy risk in JAKi users compared with TNFi users. Results A total of 4929 patients (1064 JAKi-Treated and 3865 TNFi-Treated patients) were included, and the observation periods were 1288.6 person-years (PYs) for JAKi users and 6823.8 PYs for TNFi users. The incidence rates of overall malignancy were 0.54 per 100 PYs (95% CI 0.26 to 1.14) in JAKi users and 0.85 per 100 PYs (95% CI 0.66 to 1.10) in TNFi users. In IPTW analysis with a balanced sample (4101 JAKi-Treated and 5131 TNFi-Treated patients), HR was 0.83 (95% CI 0.55 to 1.27) for overall malignancy: 0.77 (95% CI 0.50 to 1.19) for solid malignancy and 2.86 (95% CI 0.41 to 20.00) for haematological malignancy. Conclusion Malignancy risk in Korean patients with RA was not increased with JAKi use compared with TNFi use.
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