Abstract
Background
Tumor necrosis factor antagonists (TNFs) are effective for moderate–severe Crohn’s disease (CD). Approximately one-third of patients have primary-nonresponse to TNFs, which is reported to predict worse response to subsequent TNF therapy. However, this is based on treatment with subcutaneously (SC) administered, fixed-dose TNFs after failure of intravenously (IV) administered, weight-based TNFs. No study has specifically assessed the clinical and endoscopic effectiveness of IV TNFs following primary-nonresponse to SC TNFs. We hypothesize that IV, weight-based TNF dosing offers advantages over SC, fixed-dose TNFs and may be effective despite primary-nonresponse to previous SC fixed-dose TNFs.
Methods
This retrospective cohort study identified patients with moderate–severe CD with primary-nonresponse to one or more SC TNFs who subsequently received the IV TNF, infliximab for ≥ 12 weeks. We described baseline characteristics, and clinical, endoscopic and biochemical response to therapy.
Results
Key characteristics of 17 patients are described in Table 1. After ≥ 12 weeks of infliximab, 11 of 15 (73.3%) patients with clinical data reported clinical response and remission. Of 11 patients with endoscopic data, restaging colonoscopy revealed mucosal improvement in seven (63.6%) patients. Of these, five (45.5%) had endoscopic remission and three (27.3%) had mucosal healing.
Conclusions
Patients with moderate–severe CD with prior primary-nonresponse to SC, fixed-dose TNFs, subsequently treated with IV, weight-based TNF have high rates of clinical and endoscopic response and remission. Therefore, despite primary-nonresponse to SC TNFs, patients may benefit from IV TNF therapy and may not require a change to a different class of biologic therapy.
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Acknowledgments
Kindra Dawn Clark-Snustad, Anand Singla and Scott David Lee contributed equally to this article. All authors approved the final version of the article.
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This study did not receive specific funding. Lee SD received grant and research support from the following: AbbVie Pharmaceuticals, UCB Pharma, Janssen Pharmaceuticals, Inc., Salix Pharmaceuticals, Takeda Pharmaceuticals, Inc., Celgene Pharmaceuticals, Inc., Pfizer Pharmaceuticals, Inc., Atlantic Pharmaceuticals, Ltd., Gilead Sciences, Inc., Tetherex Pharmaceuticals, Arena Pharmaceuticals, Shield Therapeutics PLC and is a consultant for UCB Pharma, Mesoblast, Cornerstones, Janssen Pharmaceuticals, Inc., Takeda Pharmaceuticals, Inc., Arena Pharmaceuticals, Eli Lilly and Company, Celgene Pharmaceuticals, Inc., Celltrion Healthcare Co, Ltd, Pfizer Pharmaceuticals, Salix Pharmaceuticals. Clark-Snustad KD has been a consultant for Takeda Pharmaceuticals, Inc. For the remaining authors, no conflicts of interest were declared.
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Clark-Snustad, K.D., Singla, A. & Lee, S.D. Efficacy of Infliximab in Crohn’s Disease Patients with Prior Primary-Nonresponse to Tumor Necrosis Factor Antagonists. Dig Dis Sci 64, 1952–1958 (2019). https://doi.org/10.1007/s10620-019-05490-0
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DOI: https://doi.org/10.1007/s10620-019-05490-0