Apnimed Inc.’s lead oral therapy for obstructive sleep apnea has delivered a second round of positive phase III data, bringing a potential U.S. FDA filing closer. Top-line results taken from the second pivotal late-stage study show AD-109 (aroxybutynin 2.5mg/atomoxetine 75 mg) hit its primary endpoint with clinically meaningful and statistically significant drops in airway obstruction at 26 weeks.

Mirroring results reported in a phase IIb study, Apnimed Inc.’s first of two pivotal trials testing AD-109 as an oral therapy in obstructive sleep apnea hit primary and secondary endpoints. Should similar findings emerge from a second phase III trial, expected to read out in a couple of months, the privately held firm anticipates a U.S. NDA filing in early 2026.

Apnimed Inc. is gearing up to start phase III testing with AD-109, a once-daily combination of atomoxetine and aroxybutynin that has the potential to be the first oral therapy to treat obstructive sleep apnea, following positive results from the phase IIb Mariposa trial.