Skip to content

Parallel-Arm Study to Compare AD109 to Placebo With Patients With OSA (SynAIRgy Study)

Phase 3 Randomized Double-Blind Placebo-Controlled 6-month Parallel-Arm Study to Compare a Fixed Dose Combination of Aroxybutynin/Atomoxetine (AD109) to Placebo in Obstructive Sleep Apnea (SynAIRgy Study)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05813275
Enrollment
646
Registered
2023-04-14
Start date
2023-09-16
Completion date
2025-03-14
Last updated
2026-09-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

OSA

Keywords

Obstructive Sleep Apnea

Brief summary

This is a Phase 3 Randomized Double-Blind Placebo-Controlled 6-month Parallel-Arm Study to Compare a Fixed Dose Combination of AD109 to Placebo in Obstructive Sleep Apnea.

Interventions

DRUGAD109

Aroxybutynin 2.5 mg/atomoxetine 75 mg tablet, administered orally once daily at bedtime (Weeks 2-26). Week 1 run-in: aroxybutynin 2.5 mg/atomoxetine 37.5 mg tablet.

DRUGPlacebo

Matching placebo tablet administered orally once daily at bedtime for 26 weeks, with run-in and target dose matched to active arm packaging

Sponsors

Apnimed
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. ≥18 years of age at the time of informed consent. 2. PSG criteria: AHI of ≥10 and ≤45; ≤ 25% central or mixed apneas; and PLM arousal index ≤15 3. PROMIS-Fatigue: raw score ≥17 4. PAP intolerance or current PAP refusal. 5. BMI between 18.5 and 40 kg/m2 for men, or 42 kg/m2 for women, inclusive.

Exclusion criteria

1. Narcolepsy, restless leg syndrome, REM sleep behavior disorder 2. Insomnia disorder characterized by difficulty initiating or maintaining sleep, or use within the past month of sedative-hypnotics or other medication for the purpose of treating or avoiding insomnia symptoms. 3. Pierre Robin, Treacher Collins, or other craniofacial malformation syndrome, or grade ≥3 tonsillar hypertrophy. 4. Clinically significant cardiac disease, e.g., ventricular arrhythmia, untreated or unstable coronary artery disease, cardiac failure. Stable atrial arrhythmia is allowed. 5. Neuromuscular disorder (e.g., motor neuron disease, muscular dystrophy or myopathy, myasthenic syndrome); epilepsy; Parkinson, Alzheimer, or other neurodegenerative disease.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Apnea-Hypopnea Index (AHI)6 monthsAHI, Apnea-Hypopnea Index, is the number of apneas or hypopneas recorded via polysomnography during the study per hour of sleep. Apnea is defined as a cessation of airflow lasting at least 10 seconds, hypopnea as a decrease in airflow by at least 30% from baseline for at least 10 seconds occurring with a drop in oxygen saturation (SpO2) by at least 4%.

Countries

Canada, United States

Baseline characteristics

Characteristic
Age, Continuous57.5 years
STANDARD_DEVIATION 10.67
Baseline AHI422.13 events/hr
STANDARD_DEVIATION 11.819
Baseline AHI4 group
<15
105 Participants
Baseline AHI4 group
15 - 30
134 Participants
Baseline AHI4 group
>30
70 Participants
Race (NIH/OMB)
American Indian or Alaska Native
4 Participants
Race (NIH/OMB)
Asian
45 Participants
Race (NIH/OMB)
Black or African American
117 Participants
Race (NIH/OMB)
More than one race
8 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
3 Participants
Race (NIH/OMB)
Unknown or Not Reported
9 Participants
Race (NIH/OMB)
White
212 Participants
Sex: Female, Male
Female
153 Participants
Sex: Female, Male
Male
152 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 3250 / 319
other
Total, other adverse events
176 / 32550 / 319
serious
Total, serious adverse events
5 / 3258 / 319

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 12, 2026