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BilatEral Hypoglossal Nerve StimulaTion for TreatmEnt of ObstRuctive SLEEP Apnoea With and Without Complete Concentric Collapse

A Multicentre, Prospective, Open-label, 2 Groups Study to Assess the Safety and Performance of the Genio™ Bilateral Hypoglossal Nerve Stimulation System for the Treatment of Obstructive Sleep Apnoea in Adult Patients With and Without Complete Concentric Collapse of the Soft Palate

Status
Terminated
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03763682
Acronym
BETTER SLEEP
Enrollment
42
Registered
2018-12-04
Start date
2019-01-10
Completion date
2024-06-18
Last updated
2025-06-06

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

Conditions

Obstructive Sleep Apnea

Brief summary

The objective of this study is to explore the safety and performance of the Genio™ system in adult obstructive sleep apnoea (OSA) patients with and without complete concentric collapse of the soft palate over a period of 4.5 months of treatment (i.e. 6 months post-surgery) measured by the AHI, at rest to determine if there is a difference in performance between the two populations.

Detailed description

This is a prospective, open-label, multicentric, 2 groups study to assess the safety and performance of the Genio™ system in adult obstructive sleep apnoea (OSA) patients with and without complete concentric collapse of the soft palate. Participants will be consented, enrolled and eligibility criteria checked. If the participant is eligible, participant will proceed with the Genio™ IS implantation. Six (6) weeks after implantation, the implant will be activated and study visits will be scheduled at Week 7, Month 2, Month 3, Month 4, Month 5 and Month 6.

Interventions

Subjects will be consented, enrolled and eligibility criteria checked. If the subject is eligible, subject will proceed with the Genio(TM) implant implantation. Six (6) weeks after implantation, the implant will be activated and the subject will be assessed at 1 month plus 1 week, 2, 3, 4, 5 and 6 month(s) after implantation

Sponsors

Nyxoah S.A.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

prospective, open-label, 2 groups

Eligibility

Sex/Gender
ALL
Age
21 Years to 75 Years
Healthy volunteers
Yes

Inclusion criteria

* Man or woman between 21 and 75 years of age * Body mass index (BMI) ≤ 32 kg/m2 * Obstructive apnoea-hypopnea index (AHI) of 15-50 events/hour * Participants who have either not tolerated, have failed or refused positive airway pressure (PAP) treatments.

Exclusion criteria

* Unable or incapable of providing informed written consent * Unwilling or incapable of returning to all follow-up visits and sleep studies, including evaluation procedures and filling out questionnaires

Design outcomes

Primary

MeasureTime frame
Incidence of serious device-related adverse events recorded during the study6 months
Change from baseline to 6 months post implantation in the apnoea-hypopnea index (AHI)Change from baseline to 6 months post implantation in the apnoea-hypopnea index (AHI)

Secondary

MeasureTime frame
Change from baseline to 6, 12, 24 and 36 months post implantation in Oxygen Desaturation Index (ODI)6,12, 24, 36 months
Change from baseline to 12, 24 and 36 months post implantation in Apnea Hypopnea Index (AHI)12, 24, 36 months

Other

MeasureTime frameDescription
Therapy response rate6, 12, 24, 36 monthsResponse is defined as a reduction in AHI from baseline to 6 months of 50% or higher and apnoea-hypopnea index (AHI) at 6 months less than 20.
Sleep-related quality of life, measured by functional Outcomes of Sleep Questionnaire (FOSQ-10) score6, 12, 24, 36 monthsThe questionnaire assesses the impact of excessive sleepiness on functional outcomes relevant to daily behaviors and sleep-related quality of life. It uses a 4-point Likert response format (1= extreme difficulty to 4=no difficulty) for 5 subscales: 1) activity level (3 items), 2) vigilance(3 items), 3) intimacy and sexual relationships (1 item), 4) general productivity (2 items), and 5) social outcomes (1 item). A total score is calculated and an increase is considered an improvement.
Change from baseline to 6 months post implantation in daytime sleepiness measured with Epworth Sleepiness Scale (ESS)6, 12, 24, 36 monthsThe questionnaire asks the subject to rate his or her probability of falling asleep on a scale of increasing probability from 0 to 3 for eight different situations that most people engage in during their daily lives. The scores for the eight questions are added together to obtain a single number. A number in the 0-9 range is considered to be normal while a number in the 10-24 range indicates that expert medical advice should be sought. A reduction in ESS is considered a better outcome with a decrease of 2 points considered to be clinically significant.
Change from baseline to 6 months post implantation in snoring intensity6, 12, 24, 36 monthsMeasured subjectively by the bed partner using a 5 point scale of no scoring, light snoring, medium snoring, very loud snoring, to leaving the bedroom.

Countries

Australia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026