Value of Pharmacokinetic Assays in the Prediction of Therapeutic Response in Ulcerative Colitis (PREDIRESPUC)
Ulcerative Colitis
About this trial
This is an interventional prevention trial for Ulcerative Colitis focused on measuring Ulcerative Colitis, Vedolizumab, anti-vedolizumab
Eligibility Criteria
Inclusion Criteria:
- Aged over 18 years
- Men or non-pregnant women
- Patients with a diagnosis of ulcerative colitis who requires to start VDZ
- Moderate to severe active ulcerative colitis defined as a total mayo score ranging from 6 to 12 and endoscopic Mayo score above 1
- UC patients with previous failure with TNF antagonist agents and unacceptable side-effects from steroids, and/or immunosuppressive agents (i.e., azathioprine, 6-mercaptopurine, or methotrexate).
- oral prednisone, are allowed at stable dose for at least 4 weeks-before inclusion. Concomitant immunosuppressive agents, mesalamine, are allowed at stable dose for at least three months before inclusion. Steroid tapering has to be set up at Week 6 after starting VDZ, according to the European Crohn's and Colitis Organisation (ECCO) recommendations.
- Informed written consent given.
Exclusion Criteria:
- Existing pregnancy, lactation, or intended pregnancy within the next 15 months
- Minors or History of disease, including mental/emotional disorder that might interfere with their participation in the study
- Serious secondary illnesses of an acute or chronic nature, which in the opinion of the investigator renders the patient unsuitable for inclusion into the study
- Inability to comply with the protocol requirements
- Inability to fill in the diary cards during the last 3 days before each visit
- Severe Acute UC needed hospitalisation
- Known previous or concurrent malignancy (other than that considered surgically cured, with no evidence for recurrence for 5 years)
- Short bowel syndrome
- Previous treatments with vedolizumab, natalizumab, efalizumab or rituximab.
- Previous treatment with adalimumab within 30 days prior enrollment or infliximab and certolizumab pegol within 60 days before enrollment (This period may be shortened in the opinion of the investigator.)
- Prior extensive colonic resection, obstructive (symptomatic) intestinal stricture, abdominal abscess, active or latent tuberculosis,
- Clostridium difficile superinfection;
- Indeterminate colitis
- Concomitant leukocyte apheresis.
- Any contraindication to vedolizumab therapy
- Patients who denied the protocol, not ability to accept or sign consent of the protocol
- Subject involved in another interventional clinical trial
Sites / Locations
- CHU Amiens
- CHU Kremlin Bicêtre
- Chu L'Archet
- Ch Lyon Sud
- CHU Saint-Etienne
Arms of the Study
Arm 1
Experimental
Ulcerative Colitis patients
To determine if the best cut-off points of vedolizumab (VDZ) trough levels measured at W6 capable to identify UC patients who will achieve a clinical response at week 10 with VDZ and also the best cut-off points of VDZ trough levels measured at W14 capable to identify UC patients who will achieve a clinical remission to maintenance therapy with VDZ : Blood samples will be systematically collected at W0, W2, W6, W14 and W52 for vedolizumab pharmacokinetic parameters, including the vedolizumab trough levels and the specific anti-vedolizumab antibody. A supplementary blood sample will be collected at W10 which is the point where a significant greater number of patients were in remission. Rectosigmoidoscopy will be performed in each center at time points W0, W10 and W52, to evaluate treatment efficacy. In cases of loss of response, rectosigmoidoscopy will be performed before and four weeks after optimization.