Conditions: Colitis, Ulcerative
Keywords: mesalazine ulcerative colitis pharmacokinetics/dynamics GSK1399686
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 120
Healthy volunteers: no

Brief summary:
This study is the first-time-in-patient trial of GSK1399686, a novel locally-acting anti-inflammatory compound, aimed at obtaining initial information on the tolerability, safety, pharmacokinetics (including concentrations in colon mucosa) and anti-inflammatory activity of GSK1399686 upon oral dosing in patients with active ulcerative colitis.

The study is designed as a randomized, double-blind, double-dummy, placebo-controlled, sequential dose escalating trial, with an active control (ASACOL) group as internal control. Up to three cohorts (Cohorts 1-3), each consisting of approximately 20 patients with mild-moderately active ulcerative colitis not limited to the rectum, will be included, one for each dose level of GSK1399686 to be tested. Within a cohort, patients will be randomized in a 3:1:1 ratio to receive GSK1399686 (once daily over 4 weeks, followed by 2 weeks dosing with placebo), placebo, or ASACOL (t.i.d. for 6 weeks), respectively.

An interim analysis of fecal markers and disease activity data will be performed by the end of Cohort 3. Based upon results, the study may be stopped or continued by recruiting either Cohort 4 (if data on an additional dose level would be warranted to establish or clarify a dose-response relationship) or, in the case of a robust efficacy signal at any dose level previously studied, Cohort 5 (to expand the sample size for given dose level in order to evaluate the efficacy of GSK1399686). The number of patients and randomization allocation ratio may be altered in Cohort 5 and it may not include an active control arm. If Cohort 4 is initiated upon interim analysis, then a second interim analysis may be performed at the end of Cohort 4, to assess whether progression into Cohort 5 (as defined above) would be justifiable.

Detailed description:

Arms:
arm 1: ASACOL 800mg t.i.d. arm 2: GSK1399686 at 3-4 dose levels arm 3: Placebo

Interventions: intervention 1: GSK1399686
Intervention descriptions: intervention 1: Each dose level of GSK1399686 will be subsequently tested in a cohort of approximately 20 patients, who will be randomized in a 3:1:1 ratio to receive GSK1399686 (once daily over 4 weeks, followed by 2 weeks dosing with placebo), placebo, or ASACOL (t.i.d. for 6 weeks), respectively.

Protocol document: