Alkermes PlcPositive Phase I data for ALKS 7290 in ADHD with clinically meaningful symptom improvements and good tolerability.

Alkermes announced positive top-line data from a phase I proof-of-concept study of its investigational orexin 2 receptor agonist ALKS 7290 in adults with attention-deficit hyperactivity disorder. At day 14, median AISRS total scores fell by 14 points from baseline at the 20-mg dose and 19 points at the 50-mg dose, with improvements also seen on the CGI-S and across the AISRS inattentive and hyperactivity/impulsivity subscales. The treatment was generally well tolerated across all doses, with no serious adverse effects reported, and Alkermes said ALKS 7290 is the first orexin 2 receptor agonist to show clinically meaningful improvements in ADHD symptoms in adults. Enrollment is ongoing in a phase II study of ALKS 7290 in adults with ADHD, with data expected in 2027. Alkermes is also developing alixorexton for narcolepsy type 1 and type 2 in phase III Brilliance studies and for idiopathic hypersomnia in the phase II Vibrance-3 study, with top-line data expected by the end of 2026; the FDA granted alixorexton orphan drug designation for idiopathic hypersomnia in June 2026.
Alkermes PlcPositive Phase I data for ALKS 7290 in ADHD with clinically meaningful symptom improvements and good tolerability.
Precigen Inc
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