NCT03307330 · Mayo Clinic
A Cross-sectional Study Examining Adipose Tissue in Obstructive Sleep Apnea
What this study is about
Studies show that sleep apnea increases the risk of cardiovascular disease and is associated with obesity. However, it is unclear how sleep apnea affects fat tissue. Studies have shown that fat tissue is likely involved in developing cardiovascular disease. The purpose of this study is to see how sleep apnea changes fat tissue.
View original scientific description
Studies show that sleep apnea increases the risk of cardiovascular disease and is associated with obesity. However, it is unclear how sleep apnea affects fat tissue. Studies have shown that fat tissue is likely involved in developing cardiovascular disease. The purpose of this study is to see how sleep apnea changes fat tissue.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- BMI ≤40 kg/m2
- Not a current smoker or tobacco user
- Individuals with treated hypertension, prehypertension, and dyslipidemia will be allowed to participate in the study
- On no prescription medications other than those medications used to treat asthma, seasonal or environmental allergies (such as Cetirizine, Fexofenadine, Desloratadine, Loratadine, etc), depression, acid reflux (such as antacids or proton pump inhibitors), topical skin treatment medications or shampoos, contraceptive pills, or intrauterine devices. Other medications may be allowed at the discretion of the study staff.
- Not pregnant or breast feeding and not intending to become pregnant or breast feed
- Ability to provide written informed consent
- If a subject is on aspirin or any other anti-inflammatory medication but free of known vascular disease and depending on the indication, the study doctor may ask the subject to suspend aspirin or anti-inflammatory therapy for 7 days prior to participation in the study. In the event that the subject does not stop the aspirin or other anti-inflammatory medication, they will not be able to participate in the study because of the risk of bleeding during the fat biopsy.
Exclusion criteria
- Vulnerable study population will be excluded
- Presence of chronic kidney disease (creatinine \>2.5 mg/dL) and/or active cancers
- Anemic (hemoglobin \<12 g/dL for men and \<11 g/dL for women)
- Use of chronic medications (statins, anti-inflammatory drugs, angiotensin II receptor blockers (ARBs) and/or angiotensin-converting enzyme (ACE) inhibitors)
- Blood or plasma donation during the past 2 months
Where
- Rochester, Minnesota
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Feb 13, 2026 · Source of record for eligibility and locations