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A Comparative Effectiveness Study of Positive Airway Pressure (PAP) Therapy, Dental Device, and Atomoxetine-Oxybutynin for Treatment of Obstructive Sleep Apnea in Adults

Comparative Effectiveness of Positive Airway Pressure Therapy, Dental Device, and Atomoxetine-Oxybutynin for Sleep Apnea: the ADAPT-OSA Study

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07679282
Acronym
ADAPT-OSA
Enrollment
2400
Registered
2026-07-01
Start date
2026-09-04
Completion date
2032-05-01
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

Obstructive Sleep Apnea (OSA)

Keywords

Sleep apnea treatments, Dental device for sleep, Positive airway pressure, Atomoxetine-oxybutynin, Comparative effectiveness

Brief summary

Researchers want to identify which treatments for obstructive sleep apnea (OSA) work best and are easiest for patients to use consistently. Eligible participants will be randomly assigned one of three OSA treatments: traditional PAP therapy, a dental device, or a combination of two FDA-approved medications (atomoxetine and oxybutynin) that are currently approved for other conditions. Over the course of one year, participants will attend two in-person visits and take part in four phone check-ins to complete surveys, report any side effects, and discuss how well they are following their assigned treatment.

Interventions

Positive airway pressure delivered via a nasal or face mask while a patient sleeps to keep the airways open.

DEVICESleep dental device

An oral appliance worn during sleep to move the lower jaw forward, which tightens soft tissues and widens the airway to prevent sleep apnea.

DRUGAtomoxetine-oxybutynin

The combination of two medications (atomoxetine-oxybutynin) can reduce obstructive sleep apnea by increasing upper airway muscle activity.

Sponsors

Sairam Parthasarathy
Lead SponsorOTHER
Patient-Centered Outcomes Research Institute
CollaboratorOTHER
University of Arizona
CollaboratorOTHER
University of Maryland
CollaboratorOTHER
University of Miami
CollaboratorOTHER
Stanford University
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Intervention model description

Participants will be randomized to receive 1 of 3 possible OSA treatments - positive airway pressure (PAP) therapy, dental device, or medication treatment with atomoxetine-oxybutynin.

Eligibility

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

Inclusion criteria

* Obstructive sleep apnea (AHI \>/= 5 per hour), diagnosed in the past 6 months * Two or more of the following symptoms: snoring, fragmented sleep, witnessed apneas, or daytime sleepiness * Willingness/ability to use any of the 3 treatments for OSA (PAP, dental device, or atomoxetine-oxybutynin) * Health insurance of any type

Exclusion criteria

* Prior treatment for OSA in past year * Central sleep apnea or narcolepsy * Contraindication for dental device (temporomandibular joint problems, severe periodontal disease, insufficient dentition) * Heart failure with reduced ejection fraction of \</= 45% * Active coronary artery disease (angina or infarction within 3 months of enrollment) * Current untreated depression * Untreated narrow angle glaucoma * Untreated hypothyroidism * Clinically significant gastric retention * Clinically significant urinary retention * History of liver disease * Seizure disorder * Pregnant or nursing, or plans to become pregnant within the year * Concomitant medication use that is incompatible with atomoxetine or oxybutynin * Participation in another clinical study with an investigational product

Design outcomes

Primary

MeasureTime frameDescription
Health-related quality of lifeAt 12 monthsTo compare the effectiveness of positive airway pressure (PAP) therapy versus dental device versus atomoxetine-oxybutynin for key patient centered outcomes in improving health-related quality of life over 12 months, as assessed by the PROMIS-29 v2.0.

Secondary

MeasureTime frameDescription
OSA treatment effectiveness - Effective AHI score12 monthsTo compare the effectiveness of PAP therapy versus dental device versus atomoxetine-oxybutynin for treatment of OSA over 12 months, assessed by the effective apnea hypopnea index (AHI). Effective AHI equals the sum of apneas and hypopneas with treatment and without treatment divided by hours of total sleep time.
OSA treatment effectiveness - PROMIS-Sleep Related Impairment 8a12 monthsTo compare the effectiveness of PAP therapy versus dental device versus atomoxetine-oxybutynin for treatment of OSA over 12 months, assessed via the PROMIS-Sleep Related Impairment 8a.
Changes in systolic blood pressure12 monthsTo compare the effectiveness of PAP therapy versus dental device versus atomoxetine-oxybutynin in improving systolic blood pressure (mmHg) over 12 months.
Changes in diastolic blood pressure12 monthsTo compare the effectiveness of PAP therapy versus dental device versus atomoxetine-oxybutynin in improving diastolic blood pressure (mmHg) over 12 months.
OSA treatment adherence12 monthsTo compare treatment adherence (defined as % of nights assigned treatment was used for 4 or more hours) between PAP therapy versus dental device versus atomoxetine-oxybutynin.
Adverse effects of OSA treatment12 monthsNumber of Participants With Treatment-Related Adverse Events as Assessed by CTCAE v5.0
Change From Baseline in PROMIS Sleep Disturbance v2.0 T-Score at 12 Months12 monthsSleep disturbance will be assessed using the Patient-Reported Outcomes Measurement Information System (PROMIS) Sleep Disturbance v2.0 scale. The outcome measure is change in PROMIS Sleep Disturbance T-score from baseline to 12 months. PROMIS Sleep Disturbance scores are standardized T-scores referenced to the U.S. general population (mean=50; SD=10) and range from \~ 20 to 80, with higher scores indicating greater sleep disturbance and worse sleep-related symptoms. Negative values for change from baseline indicate improvement in sleep disturbance. Predictors of treatment response will be evaluated using multivariable logistic regression. The dependent variable will be achievement of a clinically meaningful improvement in PROMIS Sleep Disturbance T-score (MCID responder status). Determinants include treatment assignment, age, sex, race/ethnicity, socioeconomic status, insurance status, baseline sleep apnea severity, obesity, \& other prespecified determinants.

Countries

United States

Contacts

CONTACTHeidi Erickson, BSN, RN
herickso@arizona.edu1-520-626-5287
PRINCIPAL_INVESTIGATORSairam Parthasarathy, MD

University of Arizona

Outcome results

None listed

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