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Combination Drug Therapy for Obstructive Sleep Apnea (RESCUE-Combo Trial)

Phase 2
Waitlist Available
Led By Christopher Schmickl, MD, PhD
Research Sponsored by University of California, San Diego
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up 3 nights
Awards & highlights
Approved for 5 Other Conditions
All Individual Drugs Already Approved

Summary

This trial tests a combination of three drugs to treat sleep apnea in patients who can't use standard treatments like CPAP. The drugs work together to improve breathing and sleep quality.

Eligible Conditions
  • Obstructive Sleep Apnea

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~3 nights
This trial's timeline: 3 weeks for screening, Varies for treatment, and 3 nights for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Apnea Hypopnea Index (AHI)
Secondary study objectives
Blood Pressure
Pathophysiological Trait: Loop Gain
Pathophysiological Traits: Vpassive, Vactive, Arousal Threshold
+6 more

Awards & Highlights

Approved for 5 Other Conditions
This treatment demonstrated efficacy for 5 other conditions.
All Individual Drugs Already Approved
Therapies where all constituent drugs have already been approved are likely to have better-understood side effect profiles.

Trial Design

2Treatment groups
Experimental Treatment
Group I: Placebo, then Dual-Therapy, then Single/Triple-TherapyExperimental Treatment4 Interventions
Subjects will start with a 3-day PLACEBO regimen: * Day 1: Placebo (matching Acetazolamide 250mg) at bedtime at home. * Day 2: Placebo (matching Acetazolamide 500mg) at bedtime at home. * Day 3: Placebo (matching Acetazolamide 500mg + Eszopiclone 2mg) at bedtime in the sleep laboratory. After a wash-out period of 4+ days, subjects will then cross-over to a 3-day EXPERIMENTAL DUAL-regimen: * Day 1: Acetazolamide 250mg at bedtime at home. * Day 2: Acetazolamide 500mg at bedtime at home. * Day 3: Acetazolamide 500mg + Eszopiclone 2mg at bedtime in the sleep laboratory. After a wash-out period of 4+ days, subjects will then undergo an OPEN-LABEL SINGLE/TRIPLE-regimen: * Day 1: Acetazolamide 250mg at bedtime at home. * Day 2: Acetazolamide 500mg at bedtime at home. * Day 3: Acetazolamide 500mg alone or Acetazolamide 500mg + Eszopiclone 2mg + Venlafaxine 50mg at bedtime in the sleep laboratory, if sleep apnea resolved or did not resolve with the dual regimen, respectively.
Group II: Dual-Therapy, then Placebo, then Single/Triple-TherapyExperimental Treatment4 Interventions
Subjects will start with a 3-day EXPERIMENTAL DUAL-regimen: * Day 1: Acetazolamide 250mg at bedtime at home. * Day 2: Acetazolamide 500mg at bedtime at home. * Day 3: Acetazolamide 500mg + Eszopiclone 2mg at bedtime in the sleep laboratory. After a wash-out period of 4+ days, subjects will then cross-over to a 3-day PLACEBO regimen: * Day 1: Placebo (matching Acetazolamide 250mg) at bedtime at home. * Day 2: Placebo (matching Acetazolamide 500mg) at bedtime at home. * Day 3: Placebo (matching Acetazolamide 500mg + Eszopiclone 2mg) at bedtime in the sleep laboratory. After a wash-out period of 4+ days, subjects will then undergo an OPEN-LABEL SINGLE/TRIPLE-regimen: * Day 1: Acetazolamide 250mg at bedtime at home. * Day 2: Acetazolamide 500mg at bedtime at home. * Day 3: Acetazolamide 500mg alone or Acetazolamide 500mg + Eszopiclone 2mg + Venlafaxine 50mg at bedtime in the sleep laboratory, if sleep apnea resolved or did not resolve with the dual regimen, respectively.
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Eszopiclone
FDA approved
Acetazolamide
FDA approved
Placebo
1995
Completed Phase 3
~2670
Venlafaxine
FDA approved

Find a Location

Who is running the clinical trial?

American Thoracic SocietyOTHER
10 Previous Clinical Trials
630 Total Patients Enrolled
University of California, San DiegoLead Sponsor
1,189 Previous Clinical Trials
1,587,721 Total Patients Enrolled
Christopher Schmickl, MD, PhDPrincipal Investigator - Associate Physician and Postdoctoral Fellow
Regents Of The University Of California -Ucsd Physician Assoc, Regents of the University of California - UCSD Medical Group, UC San Diego Health System-Hillcrest, UCSD Medical Center-Hillcrest
1 Previous Clinical Trials
46 Total Patients Enrolled

Media Library

Combination Drug-Therapy (Other) Clinical Trial Eligibility Overview. Trial Name: NCT04639193 — Phase 2
Obstructive Sleep Apnea Research Study Groups: Placebo, then Dual-Therapy, then Single/Triple-Therapy, Dual-Therapy, then Placebo, then Single/Triple-Therapy
Obstructive Sleep Apnea Clinical Trial 2023: Combination Drug-Therapy Highlights & Side Effects. Trial Name: NCT04639193 — Phase 2
Combination Drug-Therapy (Other) 2023 Treatment Timeline for Medical Study. Trial Name: NCT04639193 — Phase 2
Obstructive Sleep Apnea Patient Testimony for trial: Trial Name: NCT04639193 — Phase 2
~4 spots leftby Dec 2025