Phase III ERADICATE Hp trial of RHB 105 in Helicobacter pylori bacterial infection meets endpoint- RedHill Biopharma

RedHill Biopharma has 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 Phase III Clinical Study Report (CSR) confirms the positive top-line results previously announced by the Company. 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.