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Ilaprazole for the treatment of duodenal ulcer: a randomized, double-blind and controlled phase III trial.

06:00 EST 11th November 2011 | BioPortfolio

Summary of "Ilaprazole for the treatment of duodenal ulcer: a randomized, double-blind and controlled phase III trial."

Abstract Objective: The new proton pump inhibitor (PPI), ilaprazole performed better at the dose of 10 mg/d relative to 5 or 20 mg/d in a previous phase II trial. A larger phase III trial was carried out to confirm the efficacy and safety of ilaprazole (10 mg/d) compared with omeprazole (20 mg/d) and provide some characteristics of the relationship between ilaprazole metabolism and CYP2C19 for later studies. Research design and methods: Patients with at least one endoscopically diagnosed active duodenal ulcer (DU) were enrolled in a multicenter, randomized, double-blind, positive controlled trial and then assigned randomly to the ilaprazole group (10 mg/d) or the omeprazole group (20 mg/d) with a sample allocation ratio 2:1. The course of treatment was 4 weeks. Clinical trial registration: ClinicalTrials.gov registration number: NCT00952978. Main outcome measures: The primary endpoint was endoscopically diagnosed ulcer healing rate at week 4. Symptom relief was evaluated as a secondary endpoint by graded scores. Safety and tolerability were evaluated on basis of clinical assessments. In addition, blood samples were collected at baseline for CYP2C19 genotypes identification. Results: Efficacy analyses were based on 494 patients. At week 4, the ulcer healing rates were 93.0% in ilaprazole group and 90.8% in omeprazole group (rate difference: 2.2%; 95% confidence interval: -2.8% to 7.2%). No obvious variation of healing rate on different CYP2C19 genotypes was found in ilaprazole group. The majority of patients (>80%) became asymptomatic after treatment. Incidences of adverse drug reactions were similar between ilaprazole group and omeprazole group (8.5% vs. 11.5%). Conclusions: Ilaprazole (10 mg/d) is as effective as omeprazole (20 mg/d) in the treatment of DU with similar side effects. The efficacy of ilaprazole is not affected by CYP2C19 polymorphisms.

Affiliation

Department of Health Statistics (L.W, JL.X), The Fourth Military Medical University , Xi'an, Shaanxi , China.

Journal Details

This article was published in the following journal.

Name: Current medical research and opinion
ISSN: 1473-4877
Pages:

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Medical and Biotech [MESH] Definitions

A PEPTIC ULCER located in the DUODENUM.

Work consisting of a clinical trial involving one or more test treatments, at least one control treatment, specified outcome measures for evaluating the studied intervention, and a bias-free method for assigning patients to the test treatment. The treatment may be drugs, devices, or procedures studied for diagnostic, therapeutic, or prophylactic effectiveness. Control measures include placebos, active medicine, no-treatment, dosage forms and regimens, historical comparisons, etc. When randomization using mathematical techniques, such as the use of a random numbers table, is employed to assign patients to test or control treatments, the trial is characterized as a RANDOMIZED CONTROLLED TRIAL.

Clinical trials involving one or more test treatments, at least one control treatment, specified outcome measures for evaluating the studied intervention, and a bias-free method for assigning patients to the test treatment. The treatment may be drugs, devices, or procedures studied for diagnostic, therapeutic, or prophylactic effectiveness. Control measures include placebos, active medicines, no-treatment, dosage forms and regimens, historical comparisons, etc. When randomization using mathematical techniques, such as the use of a random numbers table, is employed to assign patients to test or control treatments, the trials are characterized as RANDOMIZED CONTROLLED TRIALS AS TOPIC.

Clinical trials that involve at least one test treatment and one control treatment, concurrent enrollment and follow-up of the test- and control-treated groups, and in which the treatments to be administered are selected by a random process, such as the use of a random-numbers table.

Work consisting of a clinical trial that involves at least one test treatment and one control treatment, concurrent enrollment and follow-up of the test- and control-treated groups, and in which the treatments to be administered are selected by a random process, such as the use of a random-numbers table.

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