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- Title
Association of methotrexate use and lymphoproliferative disorder in patients with rheumatoid arthritis: Results from a Japanese multi-institutional retrospective study.
- Authors
Suguru Honda; Ryoko Sakai; Eisuke Inoue; Masako Majima; Naoko Konda; Hideto Takada; Mari Kihara; Nobuyuki Yajima; Toshihiro Nanki; Kazuhiko Yamamoto; Tsutomu Takeuchi; Masayoshi Harigai
- Abstract
Objectives: To investigate the risk factors and clinical characteristics of lymphoproliferative disorder (LPD) in Japanese patients with rheumatoid arthritis (RA). Methods: We enrolled patients with RA aged ≥20 years who visited the participating hospitals between April 2011 and July 2011. We investigated the risk factors for LPD using a Cox proportional hazard model and described pathological features and vital prognosis of LPD in patients with RA. Results: We enrolled 9815 patients with the following characteristics at baseline: female 79.4%, median age 63 years; median disease duration 7 years; median DAS28-CRP (3) 3.1; prevalence of MTX use 60.0%. Sixty-eight patients (0.69%) developed LPD in 3-year observation period. Multivariable analysis showed that age by decade (hazard ratio [95% confidence interval], 1.47 [1.18-1.85]) and MTX use at baseline (2.35 [1.25-4.42] for ≤8mg/week, 4.39 [2.07-9.32] for >8mg/week versus non-use) were significant risk factors of LPD. Of 55 patients with pathological diagnosis, diffuse large B cell lymphoma was the most frequent (54%). The 5-year mortality of LPD was 24%. The major cause of death was lymphoma (81%). Conclusion: This nationwide study revealed risk factors, clinical characteristics, and prognosis of LPD in the largest number of Japanese patients with RA.
- Subjects
LYMPHOPROLIFERATIVE disorders; RHEUMATOID arthritis; B cell lymphoma; PROPORTIONAL hazards models; METHOTREXATE; DIFFUSE large B-cell lymphomas
- Publication
Modern Rheumatology, 2022, Vol 32, Issue 1, p16
- ISSN
1439-7595
- Publication type
Article
- DOI
10.1080/14397595.2020.1869370