Centessa Pharmaceuticals Reports Financial Results for the Third Quarter of 2025 and Provides Update on Potential Best-in-Class Orexin Receptor 2 (OX2R) Agonist Program

Core Insights - Centessa Pharmaceuticals reported significant progress in its OX2R agonist program, particularly with ORX750, which shows potential as a best-in-class treatment for narcolepsy type 1 (NT1), narcolepsy type 2 (NT2), and idiopathic hypersomnia (IH) [2][5][9] - The company plans to initiate a registrational program for ORX750 in Q1 2026, supported by promising Phase 2a data demonstrating statistically significant improvements in key efficacy measures [2][5][14] OX2R Agonist Program Updates - ORX750 achieved statistically significant, clinically meaningful, and dose-dependent results in the Maintenance of Wakefulness Test (MWT), Epworth Sleepiness Scale (ESS), and Weekly Cataplexy Rate (WCR) across initial cohorts [2][6][9] - The Phase 2a study included 55 participants, with ORX750 showing a favorable safety profile and transient mild to moderate treatment-emergent adverse events [4][9] - ORX142, another candidate in the program, demonstrated a highly differentiated profile in Phase 1 studies, with plans for patient studies to begin in Q1 2026 [2][10][14] Financial Performance - As of September 30, 2025, the company reported cash, cash equivalents, and investments totaling $349.0 million, expected to fund operations into mid-2027 [19] - Research and development expenses for Q3 2025 were $41.6 million, an increase from $33.9 million in Q3 2024, while general and administrative expenses were relatively stable at $12.2 million [19][23] - The net loss for Q3 2025 was $54.9 million, compared to a net loss of $42.6 million in the same period of the previous year [19][23]