Retention rate of abatacept in rheumatoid arthritis patients in a real-life setting: results from a monocentric cohort

Submitted: 6 July 2023
Accepted: 22 February 2024
Published: 24 June 2024
Abstract Views: 148
PDF: 89
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Objective. Data from trials demonstrated that abatacept (ABA) has a good safety and efficacy profile in treating rheumatoid arthritis. We have studied the retention rate of ABA in a real-life cohort of patients with rheumatoid arthritis.

Methods. This is a monocentric, retrospective study including patients with rheumatoid arthritis classified by the American College of Rheumatology/European League Against Rheumatism 2010 criteria who started treatment with ABA. The Kaplan-Meier method was applied to evaluate the ABA retention rate.

Results. This analysis was conducted on 161 patients [male/female 21/140, median age 65 years, interquartile range (IQR) 18.7, median disease duration 169 months, IQR 144.0]. 111 patients (68.9%) received ABA subcutaneously. ABA was associated with methotrexate in 61.9% of patients and was the first biological disease-modifying antirheumatic drug in 41%. We observed a median ABA survival of 66 months [95% confidence interval (CI) 57.3-74.7], with a retention rate of 88% at 6 months and 50.9% at 5 years. Drug survival was significantly higher in patients treated with ABA subcutaneously and in male patients (p=0.039 and p=0.018, respectively). Adjusted for main confounders, female gender was the main predictor of withdrawal (hazard ratio 5.1, 95% CI 1.2-21.3).

Conclusions. Our study shows that better survival is associated with subcutaneous administration and male gender, confirming ABA effectiveness.

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Citations

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How to Cite

Molteni, E., Pirone, C., Ceccarelli, F., Castellani, C., Alessandri, C., Di Franco, M., Riccieri, V., Spinelli, F., Priori, R., Scrivo, R., & Conti, F. (2024). Retention rate of abatacept in rheumatoid arthritis patients in a real-life setting: results from a monocentric cohort. Reumatismo, 76(2). https://doi.org/10.4081/reumatismo.2024.1608