The study assesses in real-life setting the IBD disease course of infliximab-naïve IBD patients treated with subcutaneous infliximab. This study will look at the clinical and biological outcomes of people who take subcutaneous infliximab.~The study will enroll approximately 120 participants with an indication for iv infliximab.~All participants will receive 1 intravenous infusion on Day 1 and Week 2, followed by 1 SC injection on Week 6 and then 1 SC injection every 2 weeks for up to Week 48.~Switch to subcutaneous infliximab (Remsima® SC) at week 6 will be proposed as part of standard of care.~This multi-center trial will be conducted in hospitals of Assistance Publique - Hôpitaux de Paris (AP-HP). The overall time to participate in this study is 48 weeks. Participants will make approximately 5 visits to the clinic.
CURRENT STATE OF KNOWLEDGE IN VIEW OF THE RESEARCH About the condition under investigation Inflammatory bowel diseases (IBD), including Crohn's disease and ulcerative colitis, are chronic diseases characterized by relapsing and remitting episodes.~About comparator strategies/procedures Infliximab in its Intravenous (IV) form was the first biotherapy to be approved to treat IBD. Biosimilars of intravenous (IV) infliximab have been shown to be non-inferior to the reference product in patients with IBD, to induce and maintain clinical response~Recently, the subcutaneous (SC) formulation of the infliximab biosimilar CT-P13 (CT-P13 SC) has been shown to be non-inferior on CT-P13 concentration at week 22 to the IV formulation of CT-P13 (CT-P13 IV). These results were based on 66 patients treated with CT-P13 SC, and larger studies are needed to better assess IBD disease course of patients treated with CT-P13 SC in real-life setting.