RT Journal Article T1 Switching from reference infliximab to CT-P13 in patients with inflammatory bowel disease: results of a multicenter study after 12 months. A1 Guerra Veloz, María Fernanda A1 Vázquez Morón, Juan María A1 Belvis Jiménez, María A1 Pallarés Manrique, Héctor A1 Valdés Delgado, Teresa A1 Castro Laria, Luisa A1 Maldonado Pérez, Belén A1 Benítez Roldán, Antonio A1 Perea Amarillo, Raúl A1 Merino, Vicente A1 Caunedo Álvarez, Ángel A1 Argüelles Arias, Federico AB infliximab has changed the natural history of inflammatory bowel disease (IBD). The advent of biosimilar treatments such as CT-P13 will hopefully improve the availability of biological therapies. Data with regard to drug switching are currently limited. The objective of the study was to assess the effectiveness and safety of switching from the reference product (RP), infliximab, to CT-P13 in patients with IBD. this was a multicenter prospective observational study in patients with Crohn's disease (CD) and ulcerative colitis (UC). All patients had switched from infliximab RP (Remicade®) to CT-P13 treatment and were followed up for 12 months. The efficacy endpoint was the change in clinical remission assessed at 0 and 12 months, according to the Harvey-Bradshaw score and partial Mayo score for patients with CD and UC, respectively. Adverse events were monitored and recorded throughout the study. a total of 167 patients (116 CD/51 UC) were included; 88.8% (103/116) of patients with CD were in remission at the time of the drug switch and 69.7% were in remission at 12 months. The Harvey-Bradshaw (HB) score significantly changed at 12 months (p = 0.001); 84.3% (43/51) of patients with UC were in remission at the time of the drug switch and 76.7% were in remission at 12 months. No significant changes in the median partial Mayo score (p = 0.87) were observed at 12 months. Serious adverse events related to medication were reported in 12/167 (7.2%) cases. switching from infliximab RP to CT-P13 is safe and effective at 12 months. The loss of efficacy at 12 months was 15.7%. SN 1130-0108 YR 2018 FD 2018 LK http://hdl.handle.net/10668/12580 UL http://hdl.handle.net/10668/12580 LA en DS RISalud RD Apr 6, 2025