Doporučení Pracovní skupiny pro idiopatické střevní záněty pro diagnostiku Crohnovy choroby

Abstract

Background and aims: Recently, the first subcutaneous infliximab (IFX), CTP-13, was approved in the indication of IBD. Pivotal study established noninferiority of subcutaneous infliximab to intravenous formulation in terms of efficacy, with no unexpected safety signals observed. The aims of the study were to evaluate persistency of treatment, pharmacokinetics and safety following a switch from intravenous to subcutaneous infliximab treatment. Methods: This retrospective, single-centre cohort study, recruited all Crohn’s disease (CD) and ulcerative colitis (UC) patients who transitioned from intravenous to subcutaneous IFX between September 2022 and September 2023. Clinical disease activity according to HBI and pMayo, sIBDQ, faecal calprotectin, drug persistence, safety and pharmacokinetics were evaluated at week 24 and 56 after the switch to subcutaneous infliximab. Results: A number of 107 patients was included (63 CD and 44 UC). Quality of life and clinical disease activity scores remained unchanged both in CD and UC. Faecal calprotectin decreased significantly in CD but not in UC. Patients that had been on standard compared to intensified IV infliximab dosing displayed similar outcomes on standard SC dosing. No serious adverse events occurred. Transient local injection reactions were experienced by 4.7% of patients. Median infliximab trough levels significantly increased after the switch to subcutaneous formulation. Conclusion: The switch from intravenous to subcutaneous infliximab is a safe and effective option for the treatment of inflammatory bowel diseases including those with active disease and/ or on intensified intravenous infliximab regime.