Trevi Therapeutics Provides Clinical Trial Updates for Haduvio

Restart of Phase 2 Clinical Trial of Haduvio for Chronic Cough in Patients with IPF

Phase 2b/3 PRISM Trial of Haduvio for Severe Pruritus in Patients with Prurigo Nodularis Reaches 50% Enrollment Milestone

NEW HAVEN, Conn., Oct. 21, 2020 (GLOBE NEWSWIRE) --  Trevi Therapeutics, Inc. (Nasdaq: TRVI), a clinical-stage biopharmaceutical company focused on the development and commercialization of Haduvio (nalbuphine ER) to treat serious neurologically mediated conditions, today, announced updates to their ongoing clinical trials of Haduvio. Patient screening has resumed for the Phase 2 trial of Haduvio for chronic cough in patients with idiopathic pulmonary fibrosis (IPF), a trial that was paused due to IPF patients being an at-risk population for COVID-19. In addition, the Phase 2b/3 PRISM trial of Haduvio for severe pruritus in patients with prurigo nodularis, randomized its 180^th subject, officially reaching 50% enrollment.

Phase 2 trial of Haduvio for chronic cough in patients with idiopathic pulmonary fibrosis (IPF): The Phase 2 clinical trial is a randomized, double-blind, placebo controlled, two-treatment, two-period, crossover study designed to evaluate the efficacy, safety, tolerability and dosing of nalbuphine ER for chronic cough in patients with IPF that is being conducted in the United Kingdom (UK). The study is designed to enroll approximately 60 subjects with a goal to have 44 study completers. The primary endpoint for the study is the mean percent change in daytime cough frequency as measured by a cough monitor. The study will also examine various secondary endpoints.

Professor Toby Maher, based at the Royal Brompton Hospital and the lead investigator for this Phase 2 trial, said, “I am pleased to see Trevi’s trial for chronic cough in IPF patients restart screening after pausing due to the COVID-19 pandemic. IPF is a debilitating disease, with chronic cough being a significant contributor to a patient’s reduced quality of life. Nalbuphine ER is of particular interest for the clinical treatment of chronic cough due to the potential of its mixed agonist/antagonist mechanism of action.”

“The Company has worked with Dr. Maher to amend the protocol to require fewer in-person visits by the subjects as well as fewer procedures,” said Dr. Thomas Sciascia, Trevi’s Chief Medical Officer. “We believe this better protects the overall safety of these patients during the time of the pandemic.”

The amended protocol was recently approved by the Medicines and Healthcare products Regulatory Agency (MHRA) of the UK and patient screening has restarted at certain sites in the UK. Additionally, Trevi is analyzing the possible addition of study sites in Germany to potentially accelerate enrollment and mitigate the COVID-related risks inherent to recruitment from a single-country.