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Freezing fat to breathe better? new study probes how cryotherapy helps sleep apnea

NCT ID NCT06434558

Knowledge-focused Sponsor: University of Pennsylvania Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only This study
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This observational study follows 10 adults with obstructive sleep apnea who are already receiving a cryotherapy treatment (the Cryosa Procedure). Researchers will use MRI and ultrasound before and after treatment to measure fat in the throat and nerve activity. The goal is to find out which patients respond best and how the treatment works.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Cryosa Procedure (cryotherapy)
What this could lead to
If successful, this could help doctors predict which sleep apnea patients will benefit most from the Cryosa Procedure.
What could go wrong
This is a very small observational study (10 people) that does not test the procedure itself. It only looks for patterns, so results may not apply widely.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 10 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2024

Expected to finish

Aug 2030

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

This study enrolls only participants that are previously enrolled in the ARCTIC-3 trial and are subsequently undergoing the Cryosa Procedure as part of the ARCTIC-3 protocol. As required by the eligibility criteria in the ARCTIC-3 study, these patients have a BMI less than or equal to 40 kg/m2, are 22 to 70 years old, and have moderate to severe obstructive sleep apnea (OSA). Additionally, eligibility requirements from the ARCTIC-3 trial include having never previously undergone uvulopalatopharyngoplasty or tongue base reduction for the treatment of OSA. Patients are also excluded for any other reasons the principal investigator would deem a contraindication to undergoing procedures outlined by the ARCTIC-3 protocol.

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Enrolled in the ARCTIC-3 clinical trial at the University of Pennsylvania\* * Provision of signed and dated informed consent form for ICE-OSA Exclusion Criteria: * MRI contraindications (claustrophobia, ferromagnetic implants/foreign bodies, etc.) * Patient is pregnant or becomes pregnant during their enrollment

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Conditions

The condition(s) this trial relates to.

obstructive sleep apnea syndrome

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Obstructive sleep apnea of adult

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • University of Pennsylvania

    Philadelphia, Pennsylvania, 19104, United States

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