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Clinical trial: once-daily mesalamine granules for maintenance of remission of ulcerative colitis - a 6-month placebo-controlled trial.

Author(s): Lichtenstein GR, Gordon GL, Zakko S, Murthy U, Sedghi S, Pruitt R, Merchant K, Shaw A, Bortey E, Forbes WP

Affiliation(s): Department of Medicine, University of Pennsylvania, Philadelphia, USA.

Publication date & source: 2010-10, Aliment Pharmacol Ther., 32(8):990-9. Epub 2010 Aug 18.

Publication type: Clinical Trial, Phase III; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't

BACKGROUND: Ulcerative colitis (UC) is a chronic relapsing and remitting idiopathic inflammatory bowel disorder. AIM: To evaluate once-daily mesalamine (mesalazine) granules (MG) for maintenance of remission of UC. METHODS: Randomized, double-blind, placebo-controlled trial of patients (n=209 MG, n=96 placebo) with UC in remission [revised Sutherland Disease Activity Index (SDAI) rectal bleeding=0, mucosal appearance <2] who took MG 1.5 g or placebo once-daily for up to 6 months. Primary efficacy endpoint: the percentage of patients who remained relapse-free at month 6/end of treatment. Relapse was defined as SDAI rectal bleeding score >/=1 and a mucosal appearance score >/=2, a UC flare, or initiation of medication to treat a UC flare. RESULTS: The percentage of relapse-free patients at month 6/end of treatment was higher with MG than placebo (78.9% vs. 58.3%, P < 0.001) in the intent-to-treat analysis. Significant differences (P </= 0.025) favouring MG were observed for most secondary endpoints including improvement in rectal bleeding, physician's disease activity rating, stool frequency, the SDAI at month 6/end of treatment, patients classified as a treatment success and relapse-free duration. The incidence of adverse events was similar between groups. CONCLUSIONS: Once-daily mesalamine (mesalazine) was effective in maintaining remission of UC for 6 months. (c) 2010 Salix Pharmaceuticals.

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