期刊
INFLAMMATORY BOWEL DISEASES
卷 27, 期 2, 页码 182-189出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/ibd/izaa036
关键词
biosimilar infliximab; safety; SB2; switch
This study aimed to observe the use of infliximab biosimilar SB2 in IBD patients in Sicily. The results indicate that the safety and effectiveness of SB2 appear to be overall similar to those reported for the IFX originator and CT-P13.
Background: No data on the recently introduced infliximab (IFX) biosimilar SB2 in inflammatory bowel disease (IBD) are available. Methods: The Sicilian Prospective Observational Study of Patients With IBD Treated With Infliximab Biosimilar SB2 is a multicenter, observational, prospective study performed among the cohort of the Sicilian Network for Inflammatory Bowel Disease. All consecutive IBD patients starting the IFX biosimilar SB2 from its introduction in Sicily (March 2018) to September 2019 (18 months) were enrolled. Results: Two hundred seventy-six patients (Crohn disease: 49.3%, ulcerative colitis: 50.7%) were included: 127 (46.0%) were naive to IFX and naive to anti-tumor necrosis factor medications (anti-TNFs), 65 (23.5%) were naive to IFX and previously exposed to anti-TNFs, 17 (6.2%) were switched from an IFX originator to SB2, 43 (15.6%) were switched from the biosimilar CT-P13 to SB2, and 24 (8.7%) were multiply switched (from IFX originator to CT-P13 to SB2). The cumulative number of infusions of SB2 was 1798, and the total follow-up time was 182.7 patient-years. Sixty-seven serious adverse events occurred in 57 patients (20.7%; incidence rate: 36.7 per 100 patient-year), and 31 of these events caused the withdrawal of the drug. The effectiveness after 8 weeks of treatment was evaluated in patients naive to IFX (n = 192): 110 patients (57.3%) had steroid-free remission, while 56 patients had no response (29.2%). At the end of follow-up, 72 patients (26.1%) interrupted the treatment, without significant differences in treatment persistency estimations between the five groups (log-rank P = 0.15). Conclusions: The safety and effectiveness of SB2 seem to be overall similar to those reported for the IFX originator and CT-P13.
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