Long-term Efficacy, Safety, and Immunogenicity of Biosimilar Infliximab after One Year in a Prospective Nationwide Cohort

Lorant Gonczi, Krisztina B. Gecse, Zsuzsanna Vegh, Zsuzsanna Kurti, Mariann Rutka, Klaudia Farkas, Petra A. Golovics, Barbara D. Lovasz, Janos Banai, L. Bene, B. Gasztonyi, Tunde Kristof, L. Lakatos, P. Miheller, Ferenc Nagy, K. Palatka, M. Papp, Arpad Patai, Agnes Salamon, T. SzamosiZoltan Szepes, Gabor T. Toth, A. Vincze, Balazs Szalay, T. Molnár, Peter L. Lakatos

Research output: Article

21 Citations (Scopus)


Background: It has been previously shown that biosimilar infliximab CT-P13 is effective and safe in inducing remission in inflammatory bowel diseases. We report here the 1-year outcomes from a prospective nationwide inflammatory bowel disease cohort. Methods: A prospective, nationwide, multicenter, observational cohort was designed to examine the efficacy and safety of CT-P13 in the induction and maintenance treatment of Crohn's disease (CD) and ulcerative colitis (UC). Demographic data were collected and a harmonized monitoring strategy was applied. Clinical remission, response, and biochemical response were evaluated at weeks 14, 30, and 54, respectively. Safety data were registered. Results: Three hundred fifty-three consecutive inflammatory bowel disease (209 CD and 144 UC) patients were included, of which 229 patients reached the week 54 endpoint at final evaluation. Age at disease onset: 24/28 years (median, interquartile range: 19-34/22-39) in patients with CD/UC. Forty-nine, 53, 48% and 86, 81 and 65% of patients with CD reached clinical remission and response by weeks 14, 30, and 54, respectively. Clinical remission and response rates were 56, 41, 43% and 74, 66, 50% in patients with UC. Clinical efficacy was influenced by previous anti-tumor necrosis factor (TNF) exposure in patients with a drug holiday beyond 1 year. The mean C-reactive protein level decreased significantly in both CD and UC by week 14 and was maintained throughout the 1-year follow-up (both UC/CD: P < 0.001). Thirty-one (8.8%) patients had infusion reactions and 32 (9%) patients had infections. Antidrug antibody positivity rates were significantly higher throughout patients with previous anti-TNF exposure; concomitant azathioprine prevented antidrug antibody formation in anti-TNF-naive patients with CD. Conclusions: Results from this prospective nationwide cohort confirm that CT-P13 is effective and safe in inducing and maintaining long-term remission in both CD and UC. Efficacy was influenced by previous anti-TNF exposure; no new safety signals were detected.

Original languageEnglish
Pages (from-to)1908-1915
Number of pages8
JournalInflammatory bowel diseases
Issue number11
Publication statusPublished - nov. 1 2017

ASJC Scopus subject areas

  • Immunology and Allergy
  • Gastroenterology

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