Clinical trial Recruiting at 1 site Phase 2 Interventional

Spray cryotherapy with balloon dilation for benign tracheal and subglottic stenosis

Official title: Spray Cryotherapy for the Management of Benign Central Airway Stenosis (Cryo-BAS): A Randomized Controlled Trial

Run by Beth Israel Deaconess Medical Center · NCT06761170 · Data updated 2026-11-12

This study will test whether adding spray cryotherapy to balloon dilation reduces the need for repeat procedures in people with simple benign tracheal or subglottic stenosis compared with current standard care.

Quick facts

PhasePhase 2
Study typeInterventional
SexAll
Enrollment50 (estimated)
SponsorBeth Israel Deaconess Medical Center
Academic / other
Locations1 site (Boston, Massachusetts)
StatusRecruiting
StartedJune 2, 2025
Main results expectedJanuary 15, 2028
Study endsJanuary 15, 2028
Registry record updatedNovember 10, 2026
Trial IDNCT06761170 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults with symptomatic, benign, simple tracheal or subglottic stenosis under 1 cm in diameter who can travel to the Boston study site and meet the other inclusion/exclusion criteria.

Probably not a fit

Patients with complex stenosis, cartilage involvement (malacia or fracture), active tracheal malignancy, concurrent upper airway obstruction, large pulmonary bullae, or who are pregnant are unlikely to benefit from this intervention.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a single-center, single-blinded randomized phase 2 trial comparing spray cryotherapy plus balloon dilatation versus standard of care (steroid injection, radial cuts and balloon dilatation) in 50 patients with simple benign central airway stenosis. Participants are randomized 1:1 and followed at 6 weeks, 3 months, 6 months, and 12 months to measure time to reintervention, need for repeat procedures, patient-reported experience, physiological and anatomical airway changes, health care utilization, and safety. Procedures are performed under either a laryngeal mask airway or rigid bronchoscopy for passive venting and gas egress. The trial enrolls patients with symptomatic simple stenoses under 1 cm in diameter and excludes complex stenoses, cartilage involvement, active tracheal malignancy, significant pulmonary bullae, concurrent upper airway obstruction, and pregnancy.

Why it matters

Potential benefit: If successful, adding spray cryotherapy could lower the frequency of repeat airway procedures and improve breathing and quality of life for patients with simple benign tracheal stenosis.

How similar studies have gone: Small case series and observational reports suggest spray cryotherapy can be safe and provide symptomatic relief in airway disease, but randomized controlled data comparing it to standard care remain limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* 1\. Patients with symptomatic, benign, simple stenosis of the trachea and/or subglottic space.
* 2\. Stenotic airway of diameter \< 1cm.

Exclusion Criteria:

1. Complex stenosis, cartilage involvement (malacia or fracture).
2. Patients with giant bullae (\> a third of hemithorax) or bullae \>3cm.
3. Concurrent tracheoesophageal fistula, active tracheal malignancy.
4. Presence of concomitant upper airway obstruction.
5. Pregnancy

Where it's running

  • Beth Israel Deaconess Medical Center
    Boston, Massachusetts, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Cryospray therapy for treating benign airway stenosis

    This study is testing if adding cryospray therapy to standard treatments can help people with benign airway stenosis avoid having their condition come back within six months.

    Recruiting Phase 1 Virginia Commonwealth University · Richmond, Virginia · NCT06085209

  • Treatment of solid tumors or lymphoma with VMD-928

    This study is testing a new oral medication called VMD-928 to see if it can help adults with advanced solid tumors or lymphoma that haven't improved with standard treatments.

    Recruiting at 13 sites Phase 1/2 VM Oncology, LLC · Santa Rosa, California and 12 other locations · NCT03556228

  • Repairing tracheal and bronchial defects with a donated cryopreserved aortic patch

    This test tries a donated cryopreserved aortic patch to repair tracheal or bronchial defects in people who need airway reconstruction after congenital problems, injury, or tumor removal.

    Recruiting National Taiwan University Hospital · Taipei and 1 other locations · NCT06935110

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.