The Efficacy and Safety of Kappaproct in Chronic Active Treatment Refractory Ulcerative Colitis Patients (COLLECT)
The purpose of this study is to determine if Kappaproct is effective in the treatment of chronic active ulcerative colitis patients not responding to available therapy.
|Study Design:||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||A Placebo-controlled, Double-blind, Randomised Study to Assess the Efficacy and Safety of Kappaproct as an add-on to Current Practice in Chronic Active Treatment Refractory Ulcerative Colitis Patients|
- Clinical remission [ Time Frame: Week 12 ] [ Designated as safety issue: No ]Proportion of participants with induction of clinical remission at week 12, defined as a CAI score of ≤4.
- The time to colectomy [ Time Frame: Within 12 months ] [ Designated as safety issue: No ]Median time to colectomy after 1st dose.
- The rate of colectomy [ Time Frame: 3, 5 and 12 months ] [ Designated as safety issue: No ]Proportion of participants undergoing colectomy 3, 5 and 12 months after 1st dose.
- Steroid free remission at 5 and 12 months [ Time Frame: 5 and 12 months ] [ Designated as safety issue: No ]Proportion of participants with steroid free remission at 5 and 12 months after 1st dose.
- Health related quality of life evaluation [ Time Frame: Week 12 and 52 ] [ Designated as safety issue: No ]Mean change from baseline to week 12 and 52 in the sum score of the inflammatory bowel disease questionnaire (IBDQ) and the SF-36 scales.
- The induction of mucosal healing [ Time Frame: Week 4 and 12 ] [ Designated as safety issue: No ]Proportion of participants with induction of mucosal healing, defined as an endoscopic score of 0 or 1, at week 4 and 12.
- Frequency and duration of UC relapses [ Time Frame: During 12 months ] [ Designated as safety issue: No ]Proportion of UC relapses and the duration of these, defined as an increase of CAI ≥5 from the last study visit.
|Study Start Date:||December 2011|
|Estimated Study Completion Date:||March 2014|
|Estimated Primary Completion Date:||June 2013 (Final data collection date for primary outcome measure)|
2 doses 4 weeks apart
30 mg rectal dose at week 0 and 4
Other Name: DIMS0150
Placebo Comparator: Placebo
2 doses 4 weeks apart
Rectal dose at week 0 and 4
The study is a placebo-controlled, double-blind, randomised study to assess the efficacy and safety of Kappaproct as an add-on to current practice in treatment refractory ulcerative colitis patients. The study population will be chronic active ulcerative colitis patients who are no longer responding adequately to standard therapies and who are potential candidates for colectomy. Kappaproct/placebo will be add-on treatment allowing all included patients to be on concomitant medication, as well as mandatory steroids at inclusion, throughout the study.
Kappaproct (DIMS0150) is a modified single strand DNA-based synthetic oligodeoxyribonucleotide of 19 bases in length. The drug functions as an immunomodulatory agent by targeting the Toll-like receptor 9 (TLR9) present in immune cells (i.e., B-cells and pDCs) residing in high abundance on mucosal surfaces, such as colonic and nasal mucosa. The mucosa of the colon and rectum of patients with ulcerative colitis contains active immune cells, which produce damage to the tissue. The activation of these cells by Kappaproct results in the systemic release of specific cytokines (e.g., IL-10 and type I interferons) and chemokines which are believed to be important factors for the clinical effect of Kappaproct. Ex vivo experiments with Kappaproct have demonstrated that the drug has the ability to enhance the steroid sensitivity of peripheral blood mononuclear cells (PBMCs) obtained from steroid refractory UC patients. Thus, the desired effect is to restore steroid sensitivity in steroid refractory patients such that they may benefit from the anti-inflammatory actions of the steroid and ultimately become steroid free.
120 eligible patients will be randomly assigned in a 2:1 allocation to receive two rectal doses of Kappaproct at 30 mg, or placebo, at week 0 and 4.
The primary endpoint is the induction of clinical remission at week 12 and patients will be continuously followed for efficacy and safety until 12 months after the first dose.
Show 39 Study Locations
|Principal Investigator:||Christopher Hawkey, MD||Nottingham Digestive Diseases Centre, Queens Campus University Hospitals, Nottingham, UK|