Date: 2016-03-08
Type of information: Results
phase: 3
Announcement: results
Company: Redhill Biopharma (Israel)
Product: RHB-105
Action
mechanism: antibiotic/ proton pump inhibitor. RHB-105 is a new and proprietary fixed-dose combination therapy of two antibiotics (amoxicillin and rifabutin) and a proton pump inhibitor (omeprazole), in an all-in-one oral capsule, designed for the treatment of H. pylori bacterial infection - a major cause of chronic gastritis, peptic ulcer disease, gastric cancer and mucosa associated lymphoid tissue (MALT) lymphoma. The RHB-105 combination was originally developed by Professor Thomas Borody, a leading innovator of therapeutic approaches to gastrointestinal tract diseases, who developed the first approved triple therapy treatment for H. pylori associated with peptic ulcer disease. RHB-105 has been granted Qualifying Infectious Disease Product (QIDP) designation by the FDA, providing a Fast-Track development pathway, as well as Priority Review status, potentially leading to a shorter review time by the FDA of a New Drug Application (NDA), if filed. If approved, RHB-105 will also receive an additional five years of U.S. market exclusivity, in addition to the standard exclusivity period, for a total of 8 years of market exclusivity.
Disease: Helicobacter pylori Infection
Therapeutic area: Infectious diseases
Country: USA
Trial
details: The randomized, placebo-controlled, ERADICATE Hp Phase III study was intended to evaluate the safety and efficacy of RHB-105 as a first-line treatment for confirmed H. pylori bacterial infection. A total of 118 non-investigated dyspepsia patients with confirmed H. pylori infection were enrolled and treated in the study, which was conducted in the U.S. Subjects were randomized in a 2:1 ratio to receive either RHB-105 or a placebo for a period of 14 days and assessed for the eradication of H. pylori infection. Subsequent to completion of the treatment period and the un-blinding of the study, subjects enrolled in the placebo arm were entitled to receive SoC therapy as prescribed by the treating physician in an open-label setting, and were assessed for the eradication of H. pylori infection 28-35 days after completion of treatment. David Graham, M.D., M.A.C.G., of the Baylor College of Medicine, a key opinion leader in the field of gastric cancer and H. pylori infection, served as Principal Investigator of the ERADICATE Hp Phase III study.
Latest
news: * On March 8, 2016, RedHill Biopharma announced successful final results from the first Phase III clinical study with RHB-105 for the eradication of H. pylori (the ERADICATE Hp study). The study successfully met its primary endpoint of superiority over historical standard-of-care (SoC) eradication rate levels of 70%, with high statistical significance (p<0.001). The final results demonstrated 89.4% efficacy in eradicating H. pylori infection with RHB-105 in all patients who received at least one dose of randomized study treatment and underwent a 13C UBT test of cure at Visit 4, 28-35 days after completion of treatment with RHB-105. Subsequent open-label treatment of patients in the placebo arm with SoC therapy for persistent H. pylori infection demonstrated a 63% eradication rate with SoC, further supporting the potential superior efficacy of RHB-105 over SoC.
The safety profile of RHB-105 was consistent with that observed in the top-line analysis of the Phase III study. RHB-105 was shown to be safe and well-tolerated, with the majority of treatment-related adverse events assessed as mild to moderate. Only one serious adverse event was recorded in the RHB-105 treatment group and was assessed as unrelated to the study drug. The adverse event profile, laboratory values, and other safety assessments did not indicate safety concerns with respect to the use of RHB-105 in the study patient population. Pharmacokinetics samples were collected during the study and a stand-alone PK report will be generated when data analysis is complete.
A meeting with the FDA is scheduled for April 2016 to discuss the planned confirmatory Phase III study with RHB-105 for the treatment of H. pylori infection. RedHill intends to initiate the confirmatory Phase III study in the third quarter of 2016, subject to regulatory and other approvals.
