Takeda's Oveporexton (ORZEYFUL) Demonstrates Significant Improvement in Narcolepsy Type 1 Symptoms in Phase 3 Studies
Takeda has announced that the New England Journal of Medicine published results from two Phase 3 studies evaluating oveporexton (ORZEYFUL), an oral orexin receptor 2 (OX2R) agonist, for individuals with narcolepsy type 1 (NT1). Oveporexton is the first and only medicine approved to treat the underlying cause of NT1, rather than just managing individual symptoms. The studies, named FirstLight (TAK-861-3001) and RadiantLight (TAK-861-3002), enrolled 168 and 105 participants, respectively, and demonstrated consistent, clinically meaningful, and statistically significant improvements across a full range of NT1 symptoms. These improvements, observed compared to placebo over 12 weeks, included wakefulness, sleepiness, cataplexy, disease severity, and quality of life measures. The median percentage reductions in weekly cataplexy rate ranged from 79.0% to 88.8% with oveporexton, versus 27.7% to 39.1% with placebo. The drug was generally well-tolerated, with a safety profile consistent with previous clinical studie...