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Jinno S, Onishi A, Dubreuil M, Hashimoto M, Yamamoto W, Murata K, Takeuchi T, Kotani T, Maeda Y, Ebina K, Son Y, Amuro H, Hara R, Katayama M, Saegusa J. Comparison of the drug retention and reasons for discontinuation of tumor necrosis factor inhibitors and interleukin-6 inhibitors in Japanese patients with elderly-onset rheumatoid arthritis-the ANSWER cohort study. Arthritis Res Ther 2021; 23:116. [PMID: 33858490 PMCID: PMC8048332 DOI: 10.1186/s13075-021-02496-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 03/29/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND This multi-center, retrospective study aimed to clarify retention rates and reasons for discontinuation of either tumor necrosis factor inhibitors (TNFi) or interleukin-6 inhibitors (IL-6i) in patients with elderly-onset rheumatoid arthritis (EORA). METHODS Patients with rheumatoid arthritis (RA) enrolled in a Japanese multicenter observational registry between 2011 and 2020 were included. EORA was defined as RA with onset at 60 or over. To adjust confounding by indication for treatment with TNFi or IL-6i, a propensity score based on multiple baseline characteristics variables was used to compare the drug retention and causes for discontinuation between TNFi and IL-6i. Adjusted cumulative incidence of drug discontinuation for each reason was compared between the two groups using the Fine-Gray model. RESULTS Among a total of 9,550 patients in the registry, 674 TNFi and 297 IL-6i initiators with EORA were identified. Age, the proportion of females, disease duration, and baseline disease activity at the time of TNFi or IL-6i initiation were similar between the two groups. After adjusting for differences in baseline characteristics between the two groups, overall drug discontinuation was significantly lower in the IL-6i as compared to the TNFi (HR = 0.71, 95%CI = 0.59-0.86, p < 0.001). The adjusted cumulative incidence of discontinuation due to lack of effectiveness was lower with the IL-6i (HR = 0.46, 95%CI = 0.33-0.63, p < 0.001) while those due to adverse events (HR = 0.82, 95%CI = 0.56-1.18, p = 0.28) or achievement of clinical remission (HR = 1.09, 95%CI = 0.62-1.91, p = 0.76) were similar between the two groups. CONCLUSIONS In EORA patients initiating a TNFi or IL-6i, significantly higher drug retention was observed with IL-6i. Discontinuation due to lack of effectiveness was significantly less frequent in IL-6i while discontinuations due to adverse event or achievement of clinical remission were similar between the two groups.
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Affiliation(s)
- Sadao Jinno
- Department of Rheumatology and Clinical Immunology, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-chou Kobe-shi, Hyogo, 650-0017, Japan.
| | - Akira Onishi
- Department of Rheumatology and Clinical Immunology, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-chou Kobe-shi, Hyogo, 650-0017, Japan
| | - Maureen Dubreuil
- Section of Rheumatology, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
- VA Boston Healthcare System, Boston, MA, USA
| | - Motomu Hashimoto
- Department of Advanced Medicine for Rheumatic Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Wataru Yamamoto
- Department of Advanced Medicine for Rheumatic Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Koichi Murata
- Department of Advanced Medicine for Rheumatic Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tohru Takeuchi
- Department of Internal Medicine IV, Osaka Medical College, Osaka, Japan
| | - Takuya Kotani
- Department of Internal Medicine IV, Osaka Medical College, Osaka, Japan
| | - Yuichi Maeda
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kosuke Ebina
- Department of Musculoskeletal Regenerative Medicine, Osaka University, Graduate School of Medicine, Osaka, Japan
| | - Yonsu Son
- First Department of Internal Medicine, Kansai Medical University, Osaka, Japan
| | - Hideki Amuro
- First Department of Internal Medicine, Kansai Medical University, Osaka, Japan
| | - Ryota Hara
- The Center for Rheumatic Diseases, Department of Orthopaedic Surgery, Nara Medical University, Nara, Japan
| | - Masaki Katayama
- Department of Rheumatology, Osaka Red Cross Hospital, Osaka, Japan
| | - Jun Saegusa
- Department of Rheumatology and Clinical Immunology, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-chou Kobe-shi, Hyogo, 650-0017, Japan
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