Eli Lilly and Company to acquire Centessa Pharmaceuticals
Centessa is advancing a pipeline of orexin receptor 2 (OX2R) agonists designed to address the neurobiological system critical to the sleep-wake cycle to treat excessive daytime sleepiness and disorders of impaired wakefulness.
Its lead investigational candidate cleminorexton (formerly ORX750) has demonstrated a potential best-in-class profile in Phase 2a clinical studies across narcolepsy type 1, narcolepsy type 2, and idiopathic hypersomnia. Centessa’s OX2R agonist portfolio includes additional clinical and preclinical-stage assets with potential utility across a broader range of neurological, neurodegenerative, and neuropsychiatric conditions.
“Orexin receptor biology represents one of the most compelling mechanistic opportunities in neuroscience as a direct intervention on the master switch of the sleep-wake cycle. Centessa has assembled a portfolio with the breadth and depth to improve wakefulness across a broad array of indications,” says Carole Ho, executive vice president and president, Lilly Neuroscience. “Joining forces with Centessa colleagues means we can now pursue that potential at the speed and scale it deserves.”
USD 7.8 billion
The upfront cash consideration represents an aggregate equity value of approximately USD 6.3 billion and the CVR represents an additional potential aggregate equity value of approximately USD 1.5 billion.
Published: April 1, 2026
