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Low Sodium Oxybate in Patients With Idiopathic Hypersomnia

Impact of Low Sodium Oxybate on Total Sleep Time in Patients With Idiopathic Hypersomnia

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05837091
Enrollment
30
Registered
2023-05-01
Start date
2024-02-14
Completion date
2027-06-01
Last updated
2026-05-12

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

Conditions

Idiopathic Hypersomnia

Brief summary

Low sodium oxybate has been approved by the U.S. Food and Drug Administration (FDA) for the treatment of idiopathic hypersomnia. In this study, the researchers want to learn how low sodium oxybate impacts ability of people diagnosed with idiopathic hypersomnia to sleep for long periods of time. In addition, this study will use novel tools to determine when an individual is awake or asleep.

Interventions

Titrated according to standard of care and continued on stable dose for 3 months

DIAGNOSTIC_TEST24-hour polysomnography

Performed in a sleep study lab, recording of body functions including brain activity, eye movements, muscle activity, heart rhythm and blood oxygen levels while asleep and awake for a 24-hour period

DEVICENextsense EEG earbuds

Ear buds used to record sleep staging worn for a 24-hours period

DEVICEAxivity device

Wristband that records activity level worn for approximately one month to track sleep and steps/activity.

Sponsors

Mayo Clinic
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Primary diagnosis of IH, according to ICSD-3 criteria (does not require MSLT) 2. Subjects aged 18 - 65 years 3. BMI between 18 and 35 kg/m2 4. Self-reported sleep duration ≥ 9 hours most days including daytime naps/sleep based upon at least 10/14 days of completed sleep diary entries 5. Epworth Sleepiness Scale (ESS) ≥ 10 (required at pre-screening visit only) 6. Recommended LSO by a clinical sleep specialist as part of routine medical care. The clinical sleep specialist will be responsible for titrating LSO according to standard of care. 7. Subject must be willing to postpone LSO therapy until all baseline assessments completed 8. If treated with wake promoting agents, traditional stimulants and/or antidepressant(s), a stable dose and regimen will be required for at least 2 months before study entry and throughout the main study 9. Have used a medically acceptable method of contraception for at least 2 full menstrual cycles before participating in this study and consent to use a medically acceptable method of contraception from the first dose of study drug, throughout the entire study period, and for 30 days after the last dose of study drug.

Exclusion criteria

1. Succinic semialdehyde dehydrogenase deficiency, porphyria 2. Other central nervous system diseases: neurodegenerative diseases, , seizure disorders or history of head trauma associated with loss of consciousness 3. Lifetime history of suicide attempt or suicidal ideation in the past six months, including answer to question #9 on PHQ-9 ≥1; PHQ-9 total score \> 10; prior history of psychotic episodes; active major depressive disorder 4. Change to psychiatric medication(s)/stimulant(s) within last 3 months 5. History of chronic alcohol or drug abuse within the prior 12 months 6. Malignant neoplastic disease requiring therapy within the prior 12 months 7. Heart failure, severe hypertension or other cardiovascular disease compromising the patient's well-being or ability to participate in this study 8. Renal or hepatic impairment 9. Compromised respiratory function (e.g., history of COPD, pulmonary hypertension, and/or poorly controlled asthma) 10. Diagnosis of sleep-related breathing disorders (AHI ≥ 15 events/h using 4 % AHI) or high suspicion for sleep disordered breathing 11. Any sleep apnea treatment (e.g., Positive Airway Pressure (PAP) therapy, oral appliance therapy, etc.) 12. No regular sleep at night: shift work or other continuous, non-disease-related life conditions 13. Participation in another study of an investigational drug within the 28 days prior to Screening visit or currently 14. Pregnant and/or breast-feeding 15. Ear jewelry and/or piercings that subject not willing to/unable to remove 16. Use of device/implant that may interfere with the study devices/procedures (e.g., vagal nerve stimulator) 17. Smoke and/or use of smokeless tobacco products 18. Subjects who, in the opinion of the investigator(s), may not be suitable for the study

Design outcomes

Primary

MeasureTime frameDescription
Change in Total Sleep TimeBaseline, 3 monthsMeasured by the 24-hour polysomnography reported as total minutes a participant is deemed sleeping.

Secondary

MeasureTime frameDescription
Change in total sleep time as measured by Nextsense EEG earbudsBaseline, 3 monthsMeasured by the Nextsense EEG earbuds reported as total minutes a participant is deemed sleeping.
Change in total sleep time as measured by Axivity deviceBaseline, 3 monthsMeasured by the Axivity device reported as total minutes a participant is deemed sleeping.
Change in total sleep time as measured by patient sleep diaryBaseline, 3 monthsMeasured by patient sleep diary entries as total minutes a participant reported sleeping.

Countries

United States

Contacts

CONTACTGabbi Montefiore
montefiore.gabrielle@mayo.edu(480)574-1288
CONTACTArleth Valencia
Valencia.Arleth@mayo.edu(480)342-6487
PRINCIPAL_INVESTIGATORChad Ruoff, MD

Mayo Clinic

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 13, 2026