TY - JOUR
T1 - Outcome of Reverse Switching From CT-P13 to Originator Infliximab in Patients With Inflammatory Bowel Disease
AU - Mahmmod, Shaden
AU - Schultheiss, Johannes P D
AU - van Bodegraven, Ad A
AU - Dijkstra, Gerard
AU - Gilissen, Lennard P L
AU - Hoentjen, Frank
AU - Lutgens, Maurice W M D
AU - Mahmmod, Nofel
AU - van der Meulen-de Jong, Andrea E
AU - Smits, Lisa J T
AU - Tan, Adriaan C I T L
AU - Oldenburg, Bas
AU - Fidder, Herma H
N1 - Publisher Copyright:
© 2021 Crohn's & Colitis Foundation. Published by Oxford University Press. All rights reserved.
PY - 2021/12/1
Y1 - 2021/12/1
N2 - BACKGROUND: Patients suffering from inflammatory bowel diseases (IBD) and treated with originator infliximab are increasingly being switched to biosimilars. Some patients, however, are "reverse switched" to treatment with the originator. Here we assess the prevalence of reverse switching, including its indication and outcomes.METHODS: In this retrospective multicenter cohort study, data on patients with IBD from 9 hospitals in the Netherlands were collected. All adult patients with IBD were included if they previously had been switched from originator infliximab to the biosimilar CT-P13 and had a follow-up time of at least 52 weeks after the initial switch. The reasons for reverse switching were categorized into worsening gastrointestinal symptoms, adverse effects, or loss of response to CT-P13. Drug persistence was analyzed through survival analyses.RESULTS: A total of 758 patients with IBD were identified. Reverse switching was observed in 75 patients (9.9%). Patients with reverse switching were predominantly female (70.7%). Gastrointestinal symptoms (25.5%) and dermatological symptoms (21.8%) were the most commonly reported reasons for reverse switching. In 9 patients (12.0%), loss of response to CT-P13 was the reason for reverse switching. Improvement of reported symptoms was seen in 73.3% of patients after reverse switching and 7 out of 9 patients (77.8%) with loss of response regained response. Infliximab persistence was equal between patients who were reverse-switched and those who were maintained on CT-P13.CONCLUSIONS: Reverse switching occurred in 9.9% of patients, predominantly for biosimilar-attributed adverse effects. Switching back to originator infliximab seems effective in patients who experience adverse effects, worsening gastrointestinal symptoms, or loss of response after switching from originator infliximab to CT-P13.
AB - BACKGROUND: Patients suffering from inflammatory bowel diseases (IBD) and treated with originator infliximab are increasingly being switched to biosimilars. Some patients, however, are "reverse switched" to treatment with the originator. Here we assess the prevalence of reverse switching, including its indication and outcomes.METHODS: In this retrospective multicenter cohort study, data on patients with IBD from 9 hospitals in the Netherlands were collected. All adult patients with IBD were included if they previously had been switched from originator infliximab to the biosimilar CT-P13 and had a follow-up time of at least 52 weeks after the initial switch. The reasons for reverse switching were categorized into worsening gastrointestinal symptoms, adverse effects, or loss of response to CT-P13. Drug persistence was analyzed through survival analyses.RESULTS: A total of 758 patients with IBD were identified. Reverse switching was observed in 75 patients (9.9%). Patients with reverse switching were predominantly female (70.7%). Gastrointestinal symptoms (25.5%) and dermatological symptoms (21.8%) were the most commonly reported reasons for reverse switching. In 9 patients (12.0%), loss of response to CT-P13 was the reason for reverse switching. Improvement of reported symptoms was seen in 73.3% of patients after reverse switching and 7 out of 9 patients (77.8%) with loss of response regained response. Infliximab persistence was equal between patients who were reverse-switched and those who were maintained on CT-P13.CONCLUSIONS: Reverse switching occurred in 9.9% of patients, predominantly for biosimilar-attributed adverse effects. Switching back to originator infliximab seems effective in patients who experience adverse effects, worsening gastrointestinal symptoms, or loss of response after switching from originator infliximab to CT-P13.
KW - Anti-TNF-alpha
KW - Biologic therapy
KW - Biosimilars
KW - Crohn disease
KW - Inflammatory bowel disease
KW - Infliximab
KW - Ulcerative colitis
UR - http://www.scopus.com/inward/record.url?scp=85103179023&partnerID=8YFLogxK
U2 - 10.1093/ibd/izaa364
DO - 10.1093/ibd/izaa364
M3 - Article
C2 - 33538298
SN - 1078-0998
VL - 27
SP - 1954
EP - 1962
JO - Inflammatory bowel diseases
JF - Inflammatory bowel diseases
IS - 12
ER -