BACKGROUND: There are limited data concerning infliximab drug monitoring during de-escalation of the treatment of inflammatory bowel disease (IBD). AIM: To define the rate and the predictors of relapse following infliximab de-escalation in IBD patients in remission. METHODS: All IBD patients at a single referral centre in clinical and biological remission and in whom the dose of infliximab had been de-escalated were included. Patients in remission with a high trough level of infliximab (>7 mg/L) were considered to be trough level-based de-escalation patients. The data were retrieved from a prospective IBD database. Actuarial analysis was performed for statistical purposes. RESULTS: A total of 146 de-escalations were performed in 96 patients (Crohn's disease/ulcerative colitis: 68%/32%); 54 (37%) were based on clinical remission only, and 92 (63%) were based on clinical remission associated with a trough level above 7 mg/L. The cumulative probabilities of relapse following infliximab de-escalation were 16% and 47% at 1 and 2 years, respectively. Ulcerative colitis was associated with an increased risk of relapse (HR = 3.2, P = 0.005). Conversely, combination therapy at infliximab initiation (HR = 0.39, P = 0.0110) and trough level-based de-escalation were associated with decreased risk of relapse (HR = 0.45, P = 0.024). Trough levels before and after de-escalation were well correlated; a decrease by half was observed following a 2-week interval increase or a half-dose decrease. CONCLUSION: The use of trough levels to assess the feasibility of dose de-escalation seems to be a prerequisite for decreasing the risk of relapse.
BACKGROUND: There are limited data concerning infliximab drug monitoring during de-escalation of the treatment of inflammatory bowel disease (IBD). AIM: To define the rate and the predictors of relapse following infliximab de-escalation in IBD patients in remission. METHODS: All IBD patients at a single referral centre in clinical and biological remission and in whom the dose of infliximab had been de-escalated were included. Patients in remission with a high trough level of infliximab (>7 mg/L) were considered to be trough level-based de-escalation patients. The data were retrieved from a prospective IBD database. Actuarial analysis was performed for statistical purposes. RESULTS: A total of 146 de-escalations were performed in 96 patients (Crohn's disease/ulcerative colitis: 68%/32%); 54 (37%) were based on clinical remission only, and 92 (63%) were based on clinical remission associated with a trough level above 7 mg/L. The cumulative probabilities of relapse following infliximab de-escalation were 16% and 47% at 1 and 2 years, respectively. Ulcerative colitis was associated with an increased risk of relapse (HR = 3.2, P = 0.005). Conversely, combination therapy at infliximab initiation (HR = 0.39, P = 0.0110) and trough level-based de-escalation were associated with decreased risk of relapse (HR = 0.45, P = 0.024). Trough levels before and after de-escalation were well correlated; a decrease by half was observed following a 2-week interval increase or a half-dose decrease. CONCLUSION: The use of trough levels to assess the feasibility of dose de-escalation seems to be a prerequisite for decreasing the risk of relapse.
Authors: Konstantinos Papamichael; Adam S Cheifetz; Gil Y Melmed; Peter M Irving; Niels Vande Casteele; Patricia L Kozuch; Laura E Raffals; Leonard Baidoo; Brian Bressler; Shane M Devlin; Jennifer Jones; Gilaad G Kaplan; Miles P Sparrow; Fernando S Velayos; Thomas Ullman; Corey A Siegel Journal: Clin Gastroenterol Hepatol Date: 2019-03-27 Impact factor: 11.382
Authors: Pepijn W A Thomas; Lisa J T Smits; Maarten Te Groen; Rachel L West; Maurice G V M Russel; Jeroen M Jansen; Tessa E H Römkens; Frank Hoentjen Journal: Eur J Gastroenterol Hepatol Date: 2022-05-01 Impact factor: 2.586
Authors: Wannee Kantasiripitak; An Outtier; Sebastian G Wicha; Alexander Kensert; Zhigang Wang; João Sabino; Séverine Vermeire; Debby Thomas; Marc Ferrante; Erwin Dreesen Journal: CPT Pharmacometrics Syst Pharmacol Date: 2022-06-15