title: Switching Between Infliximab Originator and Biosimilar in Paediatric Patients with Inflammatory Bowel Disease. Preliminary Observations.
abstract: OBJECTIVE
  The growing incidence of inflammatory bowel disease (IBD) in children necessitates the use of biological treatments. Recently, an infliximab biosimilar was authorized in the European Union, which may result in switching patients. We present our preliminary experiences with such switches.
  
  
  METHODS
  The prospective study included 32 paediatric patients diagnosed with Crohn's disease (CD) and 7 children with ulcerative colitis (UC) at 3 academic hospitals, who were switched from infliximab originator to its biosimilar (Remsima). Patient characteristics, disease severity, laboratory parameters and adverse events were recorded. Means, medians and ranges were calculated.
  
  
  RESULTS
  Mean age at diagnosis of CD and UC was 11.1 (2.7-15.3) and 12.3 years (8.5-14.8), respectively. Mean number of infliximab originator infusions before switching to the biosimilar was 9.9 (median 8, range 4-29) and 5.1 (5, 1-12) for the CD and UC group, respectively. Evaluation efficacy of last biosimilar doses of all patients revealed rates of clinical remission of 88 and 57% for CD and UC patients, respectively. Last follow-up assessment of patients who continued with biosimilar therapy showed that 16/20 (80%) CD patients and all 4 UC individuals were in remission. One infusion reaction to infliximab biosimilar was observed in a CD patient, which led to treatment discontinuation. The incidence of sporadic mild adverse events prior to and after switching did not differ significantly and was consistent with the safety profile of the infliximab molecule.
  
  
  CONCLUSIONS
  Switching from infliximab originator to its biosimilar seems to be a safe option in children with CD. After the switch the biosimilar was just as effective as the originator.
authors.affiliation: Department of Gastroenterology, Hepatology, Nutrition and Pediatrics, The Children's Memorial Health Institute, Warsaw, Poland.
authors.forename: J
authors.initials: J
authors.lastname: Sieczkowska
authors.affiliation: Department of Gastroenterology, Hepatology, Nutrition and Pediatrics, The Children's Memorial Health Institute, Warsaw, Poland.
authors.forename: D
authors.initials: D
authors.lastname: Jarzębicka
authors.affiliation: Department of Pediatric Gastroenterology and Nutrition, Medical University of Warsaw, Warsaw, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Banaszkiewicz
authors.affiliation: Department of Pediatric Allergology, Gastroenterology and Nutrition, Medical University of Lodz, Lodz, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Plocek
authors.affiliation: Department of Pediatric Gastroenterology and Nutrition, Medical University of Warsaw, Warsaw, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Gawronska
authors.affiliation: Department of Pediatric Allergology, Gastroenterology and Nutrition, Medical University of Lodz, Lodz, Poland.
authors.forename: E
authors.initials: E
authors.lastname: Toporowska-Kowalska
authors.affiliation: Department of Gastroenterology, Hepatology, Nutrition and Pediatrics, The Children's Memorial Health Institute, Warsaw, Poland.
authors.forename: G
authors.initials: G
authors.lastname: Oracz
authors.affiliation: Department of Gastroenterology, Hepatology, Nutrition and Pediatrics, The Children's Memorial Health Institute, Warsaw, Poland.
authors.forename: M
authors.initials: M
authors.lastname: Meglicka
authors.affiliation: Department of Gastroenterology, Hepatology, Nutrition and Pediatrics, The Children's Memorial Health Institute, Warsaw, Poland j.kierkus@med-net.pl.
authors.forename: J
authors.initials: J
authors.lastname: Kierkus
mesh_terms: D000293:Adolescent; D000911:Antibodies, Monoclonal / Q000008:administration & dosage; D059451:Biosimilar Pharmaceuticals / Q000008:administration & dosage*; D002648:Child; D002675:Child, Preschool; D004305:Dose-Response Relationship, Drug; D005260:Female; D005500:Follow-Up Studies; D005765:Gastrointestinal Agents / Q000008:administration & dosage; D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000188:drug therapy*; D000069285:Infliximab / Q000008:administration & dosage*; D008297:Male; D011446:Prospective Studies; D012074:Remission Induction; D016896:Treatment Outcome
chemical_list: D000911:Antibodies, Monoclonal; D059451:Biosimilar Pharmaceuticals; C000591237:CT-P13; D005765:Gastrointestinal Agents; D000069285:Infliximab
keywords: Biosimilar; inflammatory bowel disease; infliximab; paediatric