Trevi Therapeutics Announces Oral Presentation and Abstracts at CHEST 2025 Annual Meeting

Core Insights - Trevi Therapeutics, Inc. announced the acceptance of two abstracts for presentation at the CHEST 2025 Annual Meeting, focusing on the efficacy and safety results of nalbuphine ER for chronic cough treatment in patients with idiopathic pulmonary fibrosis (IPF) and refractory chronic cough (RCC) [1][5] Group 1: Clinical Trials - The Phase 2b CORAL trial evaluated nalbuphine ER in three doses (27 mg, 54 mg, and 108 mg twice daily) against placebo for chronic cough in IPF patients over a 6-week period, with 165 patients randomized [3] - The primary efficacy endpoint was the relative change in 24-hour cough frequency, measured by an objective cough monitor, comparing nalbuphine ER to placebo at the end of Week 6 [3] - The Phase 2a RIVER trial assessed nalbuphine ER's efficacy, safety, and tolerability in RCC patients through a crossover study design, with each treatment period lasting 21 days [4] Group 2: Patient Population and Unmet Need - There are approximately 150,000 patients with IPF in the U.S., with two-thirds experiencing uncontrolled chronic cough, and around 228,000 patients with non-IPF ILD, with 50-60% also facing uncontrolled chronic cough [6] - Chronic cough can lead to significant morbidity and mortality, including increased respiratory hospitalizations and a decline in quality of life [6] - RCC affects an estimated 2-3 million patients in the U.S., characterized by a persistent cough lasting over 8 weeks despite treatment for underlying conditions, indicating a high unmet medical need [6] Group 3: Product Information - Trevi Therapeutics is developing Haduvio™ (oral nalbuphine ER) as a potential treatment for chronic cough in IPF, non-IPF ILD, and RCC, which has shown statistically significant reductions in cough frequency in clinical trials [5] - Nalbuphine acts on the cough reflex arc as a kappa agonist and mu antagonist, targeting opioid receptors involved in cough control [5]