Treatment Failure of Continuous Positive Airway Pressure (CPAP) in Patients With Obstructive Sleep Apnea Syndrome (OSA): A Trial Comparing Polysomnography and the Sunrise Device to Drive Treatment-Adjustment Decisions. (SUNCPAP)

April 7, 2026 updated by: University Hospital, Grenoble

Treatment Failure of Continuous Positive Airway Pressure (CPAP) in Patients With Obstructive Sleep Apnea Syndrome (OSA): A Randomized Controlled Trial Comparing Polysomnography and the Sunrise Device to Drive Treatment-Adjustment Decisions.

The goal of this clinical trial is to determine whether treatment-adjustment decisions based on one night of home monitoring with the Sunrise device are comparable to decisions based on one night of in-laboratory polysomnography (PSG) in adults with obstructive sleep apnea (OSA) who remain insufficiently controlled with continuous positive airway pressure (CPAP) therapy.

The main questions it aims to answer are:

  • Do Sunrise-based assessments lead to similar therapeutic decisions as PSG-based assessments?
  • Are residual apnea-hypopnea indices measured by Sunrise comparable to those measured by PSG?

Participants will complete both assessment sequences in a randomized cross-over design. They will:

  • Use the Sunrise device for several nights with and without CPAP.
  • Undergo one night of PSG with and without CPAP.
  • Have their CPAP therapy reviewed based on the results of each assessment method.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

Obstructive sleep apnea (OSA) affects nearly one billion adults worldwide and is associated with recurrent upper-airway obstruction during sleep, leading to intermittent hypoxemia and multiple cardiometabolic and neurocognitive comorbidities. Continuous positive airway pressure (CPAP) is the standard treatment and is widely prescribed, with more than 1.8 million users in France. Despite its proven efficacy, large-scale analyses show that over 10% of treated patients continue to exhibit elevated residual apnea-hypopnea indices (AHI), a situation associated with reduced adherence and premature discontinuation of therapy.

Evaluation of CPAP effectiveness typically relies on in-laboratory polysomnography (PSG), which remains the reference method for characterizing residual respiratory events and sleep architecture. However, the need for PSG generates substantial healthcare costs, long waiting times, and unequal access to diagnostic resources.

The Sunrise device is a CE-marked medical device that records mandibular movements during sleep and uses artificial intelligence to characterize respiratory events and sleep parameters. Multiple validation studies have demonstrated strong agreement between Sunrise-derived metrics and PSG.

This randomized cross-over trial investigates whether Sunrise can be used to guide therapeutic decisions in patients with insufficiently controlled OSA under CPAP therapy, defined by a residual AHI greater than 10 events per hour. Participants are randomized to one of two sequences:

  1. Sunrise assessments first, consisting of several nights with and without CPAP, followed by one night of PSG with and without CPAP; or
  2. PSG assessments first, followed by the Sunrise sequence.

This design allows each participant to serve as their own control and enables direct comparison of treatment-adjustment decisions derived from Sunrise versus PSG. The study aims to determine whether a home-based, low-burden assessment could replace or reduce the need for in-laboratory evaluations, thereby improving access to care, reducing costs, and facilitating personalized CPAP management.

Study Type

Interventional

Enrollment (Estimated)

105

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adults aged 18 to 85 years
  • Patients treated with Resmed CPAP
  • Residual apnea-hypopnea index under CPAP (rAHI(CPAP) > 10 events/hour)
  • Access to a smartphone and home internet connection, and ability to use a mobile application
  • Signed informed consent
  • Affiliated with, or beneficiary of, a national health insurance program

Exclusion Criteria:

  • Severe chronic obstructive or restrictive pulmonary disease, with or without supplemental oxygen
  • Unstable cardiovascular disease or severe heart failure requiring hospitalization within the past 3 months, or meeting New York Heart Association (NYHA) class III or IV criteria
  • Conditions affecting mandibular condyle rotation or temporomandibular joint function
  • Refusal to shave excessive facial hair when required for proper placement of the Sunrise device
  • Participation in another interventional clinical study or currently within an exclusion period of another study
  • Individuals who, in the investigator's judgment, are unlikely to comply with study procedures or requirements
  • Individuals who cannot be contacted in case of emergency
  • Persons protected under French Public Health Code articles L1121-5, L1121-6, and L1121-8 (including pregnant or breastfeeding women, persons deprived of liberty, individuals under psychiatric care under articles L.3212-1 or L.3213-1, individuals admitted to healthcare or social institutions for reasons other than research, and persons under legal protection or unable to provide informed consent)
  • Staff members with a hierarchical relationship to the principal investigator

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: PSG-SUN
Participants will first undergo an overnight, in-laboratory polysomnography (PSG) in the sleep center. After this in-lab recording period, they will complete an at-home sleep assessment using the Sunrise device over the predefined home recording period.
Device: Sunrise
The Sunrise device is a single-use, mandibular movement-based sleep monitoring sensor designed to assess sleep architecture and respiratory events at home. In this study, Sunrise is evaluated as an alternative to in-laboratory polysomnography (PSG), which is considered the current gold-standard reference for sleep assessment.
Other: SUN-PSG
Participants will first complete an at-home sleep assessment using the Sunrise device over the predefined home recording period. After this home recording period, they will undergo an overnight, in-laboratory polysomnography (PSG) in the sleep center.
Device: Sunrise
The Sunrise device is a single-use, mandibular movement-based sleep monitoring sensor designed to assess sleep architecture and respiratory events at home. In this study, Sunrise is evaluated as an alternative to in-laboratory polysomnography (PSG), which is considered the current gold-standard reference for sleep assessment.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Cohen's Kappa for Agreement Between Therapeutic Adjustment Decisions Based on Sunrise and Polysomnography (PSG)
Time Frame: Within 1 night for each modality (Sunrise home recording and in-lab PSG).

Agreement between therapeutic adjustment decisions derived from Sunrise home recordings and in-lab polysomnography (PSG), quantified using Cohen's kappa coefficient. Two independent experts will provide decisions for each modality; disagreements will be resolved by consensus.

The therapeutic decision is a three-category variable: No change in CPAP treatment, adjustment of CPAP pressure or change of mask, switch to servo-ventilation if residual events are predominantly central.
Within 1 night for each modality (Sunrise home recording and in-lab PSG).

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Cohen's Kappa for Agreement Between Therapeutic Adjustment Decisions Based on Three-Night Sunrise Recordings and Polysomnography (PSG)
Time Frame: Three consecutive home nights for Sunrise recordings and one in-lab PSG night.

Agreement between therapeutic adjustment decisions derived from three consecutive nights of Sunrise home recordings and in-lab polysomnography (PSG), quantified using Cohen's kappa coefficient. Two independent experts will provide decisions for each modality; disagreements will be resolved by consensus.

The therapeutic decision is a three-category variable: No change in CPAP treatment, adjustment of CPAP pressure or change of mask, switch to servo-ventilation if residual events are predominantly central.
Three consecutive home nights for Sunrise recordings and one in-lab PSG night.
Agreement Between PSG-Measured rAHI and Sunrise-Measured rAHI (One Night and Three Nights)
Time Frame: One in-lab PSG night; one or three consecutive home nights with Sunrise.

This outcome evaluates the concordance between the residual Apnea-Hypopnea Index (rAHI) measured by:

  • in-lab polysomnography (PSG) during one night (gold standard),
  • the Sunrise device during the first home night,
  • the Sunrise device across three consecutive home nights.

For each modality, rAHI values will be interpreted by two independent experts, blinded to the results of the other method.

In case of disagreement between the two experts for a given modality, they will meet to reach a consensus rAHI interpretation, following the same adjudication procedure as for the primary outcome.

The analysis will compare rAHI obtained from PSG with rAHI obtained from Sunrise over one night and over three nights to assess the level of agreement between modalities.
One in-lab PSG night; one or three consecutive home nights with Sunrise.
Inter-Rater Agreement Between the Two Independent Experts for Therapeutic Adjustment Decisions
Time Frame: One in-lab PSG night; one or three consecutive home nights with Sunrise.

For each participant and for each assessment modality (in-lab PSG, one-night Sunrise recording, and three-night Sunrise recording), the therapeutic adjustment decision will be independently provided by Expert 1 and Expert 2, each blinded to the other's evaluation.

The therapeutic decision is a three-category variable:

  • No change in CPAP treatment,
  • Adjustment of CPAP pressure or change of mask,
  • Switch to servo-ventilation if residual events are predominantly central.

This outcome measures the inter-rater agreement between the two experts for each modality, based on their initial independent decisions (before any consensus meeting).
One in-lab PSG night; one or three consecutive home nights with Sunrise.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Grenoble

Collaborators

Polyclinique Saint Laurent - Rennes

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

April 1, 2026

Primary Completion (Estimated)

September 1, 2028

Study Completion (Estimated)

September 1, 2028

Study Registration Dates

First Submitted

March 30, 2026

First Submitted That Met QC Criteria

April 7, 2026

First Posted (Actual)

April 15, 2026

Study Record Updates

Last Update Posted (Actual)

April 15, 2026

Last Update Submitted That Met QC Criteria

April 7, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 38RC25.0313

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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