ClinicalTrials.gg
CompletedNCT02483637FeasibilityUpdated Feb 23, 2023

Safety and Feasibility Study of Rejuvenair™ for Treating Chronic Bronchitis Patients

An interventional study of RejuvenAir in Bronchitis, Chronic and Cryotherapy Effect, sponsored by CSA Medical, Inc.. Completed at 3 sites in 3 countries. Open to participants aged 40 Years to 75 Years. Per ClinicalTrials.gov, last updated 2023-02-23.

Sponsored by CSA Medical, Inc. · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Not applicable
Ages
40 Years to 75 Years
Sex
All
01

Study summary

This study evaluates the safety of RejuvenAir Cryospray therapy to treat symptomatic chronic bronchitis patients with airflow restrictions.

Read the detailed description

Prospective, open label, single arm study with sequential accrual of subjects with known chronic bronchitis. There are two phases to this study. Phase A will enroll up to 12 subjects and will treat a single lobe to assess safety, feasibility and histology/immunology. After review of the data by the Data Safety Monitoring Board, Phase B of the study would begin. In Phase B of the study, Phase A subjects would have their remaining two lobes treated. In addition up to 24 subjects will be enrolled and will have all upper and lower lobes treated to assess safety, feasibility and immunology.

02

Conditions studied

  • Bronchitis, Chronic
  • Cryotherapy Effect

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Keywords

  • spray cryotherapy
  • cryotherapy
  • chronic bronchitis
  • airflow restrictions
03

In context

Bronchitis, Chronic

209 studies on the registry are indexed under Bronchitis, Chronic; 14 are open to participants now.

This study's enrollment of 30 is below the median of 101 across 154 interventional studies indexed under Bronchitis, Chronic.

Browse Bronchitis, Chronic studies →

Lead sponsor

CSA Medical, Inc. is the lead sponsor of 17 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
40 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Males and females ≥40 to ≤75 years of age.
  • Subject is able to read, understand, and sign a written in order to participate in the study.
  • Subject agrees to continue maintenance pulmonary/ medications for the duration of the study.
  • Diagnosis of chronic bronchitis (CB) and chronic obstructive pulmonary disease (COPD) for a minimum of two years. (Chronic Bronchitis is defined clinically as chronic productive cough for 3 months in each of 2 successive years in a patient in whom other causes of productive cough have been excluded.)
  • Pre-procedure post bronchodilator of greater than or equal to 30% and less than or equal to 80% of predicted within 3 months of enrollment.
  • Smoking history of at least 10 pack years.
  • Non-smoking for a minimum of 6 months prior to consent and agrees to continue not smoking for the duration of the study.
  • Subject is able to adhere to and undergo 3 (4 if in Phase A) bronchoscope procedures that includes lung and multiple MCS treatments in the opinion of the investigator

Exclusion criteria

Exclusion Criteria:

  • Subject has had an acute pulmonary infection or pneumonia within prior 6 weeks of study bronchoscopy.
  • Subject has had a CB and/or exacerbation (requiring and/or antibiotics) within 6 weeks prior to study bronchoscopy, as defined by their treating physician
  • Subject has bronchiectasis or other respiratory disease other than chronic bronchitis and COPD.
  • Diagnosis of asthma with an onset before 30 years of age
  • Subject has bullous emphysema characterized as large bullae >30 millimeters on CT.
  • Subject has had a transplant.
  • Subject has the inability to walk >140 meters
  • Subject has PaC02 >8kPa, or a PaO2\<7kPa at room air.
  • Subject has a RVSP >45mmHg or a \<45% on 2D-cardiac echo.
  • Subject has undergone lung surgery: pneumonectomy, lobectomy, bullectomy, lung volume reduction surgery
  • Subject has had a prior lung device procedure, including emphysema stent(s) implanted, lung coils, valves, lung denervation or other devices for emphysema.
  • Subject is unable to temporarily discontinue use of anticoagulant therapy:

warfarin, Coumadin, LMWH, heparin, clopidogrel (or equal)

  • Subject is on >10 mg of prednisolone/day.
  • Subject has a serious medical condition, such as: uncontrolled congestive heart failure, uncontrolled angina, myocardial infarction in the past year, renal failure, liver disease, cerebrovascular accident within the past 6 months, uncontrolled diabetes, hypertension, disease or uncontrolled gastric reflux
  • Subject is pregnant, nursing, or planning to get pregnant during study duration.
  • Subject has received chemotherapy within the past 6 months or is expected to receive chemotherapy during participation in this study.
  • Subject is or has been in another clinical study within 6 weeks of baseline.
  • Subject has known sensitivity to medication required to perform bronchoscopy (such as lidocaine, atropine, and benzodiazepines).
  • Subject has been in another clinical investigational study within 6 weeks of baseline.
Terms in these criteria, in plain language(9)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

COPD

Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.

FEV1

From a breathing test (spirometry): how much air you can blow out in the first second. Often given as a percentage of what is expected for your age, height and sex.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
30 participants (actual)

Study arms

  • Experimental
    RejuvenAir

    RejuvenAir treatment of the right lower lobe and right main stem bronchus. Each MCS will be tailored to the bronchial area undergoing treatment and the amount of liquid nitrogen delivered will vary depending on the airway diameter.

    Device: RejuvenAir

Interventions

  • DeviceRejuvenAir

    Device: RejuvenAir

06

What researchers measure

Primary outcomes

  1. Adverse and Serious Adverse Events

    Number of subjects with treatment emergent adverse events. Observed rates and two-sided 95% exact confidence interval will be calculated for AE rates and SAE rates overall and for organ class.

    Time frame: Change from Baseline to 3-Months Following Completion of Treatments

  2. Ability to Complete all 3 MCS Treatments

    Number of subjects completing all 3 treatments.

    Time frame: Change from Baseline to 3-Months Following Completion of Treatments

  3. Patient Reported Outcome Instrument: St. George's Respiratory Questionnaire (SGRQ)

    Scale is 0-100; a higher score is worse

    Time frame: Change from Baseline to 3-Months Following Completion of Treatments

Secondary outcomes

  1. Spirometry Testing

    FEV1, FEV1/FVC, VC, FIV1

    Time frame: Change from Baseline to 3-Months, 1 year, 2 year and 3 year Following Completion of Treatments

  2. 6 Minute Walk Test

    Number of meters walked in six minutes

    Time frame: Change from Baseline to 3-Months, 1 year, 2 year and 3 year Following Completion of Treatments

  3. Leicester Cough Questionnaire (LCQ)

    The total score range is 19-133; a higher score is better.

    Time frame: Change from Baseline to 3-Months, 1 year, 2 year and 3 year Following Completion of Treatments

  4. COPD Assessment Test (CAT)

    The total score range is 0-40; a higher score is worse

    Time frame: Change from Baseline to 3-Months, 1 year, 2 year and 3 year Following Completion of Treatments

  5. Visual Analog Scale (VAS)

    The total score range is 0-100; a higher score is worse

    Time frame: Change from Baseline to 3-Months, 1 year, 2 year and 3 year Following Completion of Treatments

  6. Modified Medical Research Council (mMRC)

    The total score range is 0-4; a higher score is worse

    Time frame: Change from Baseline to 3-Months, 1 year, 2 year and 3 year Following Completion of Treatments

Other outcomes

  1. Exacerbation Rate

    Annualized exacerbation rates

    Time frame: Change from Baseline to 3-Months, 1 year, 2 year and 3 year Following Completion of Treatments

  2. Airway Wall Thickness Using HRCT

    Lumen radius in mm.

    Time frame: Change from Baseline to 3-Months, 1 year, 2 year and 3 year Following Completion of Treatments

  3. Plasma Fibrinogen

    150-400mg/dL

    Time frame: Change from Baseline to 3-Months, 1 year, 2 year and 3 year Following Completion of Treatments

07

Study locations

3 sites
  • St. Paul's Hospital
    Vancouver, British Columbia, Canada
  • University Medical Center Groningen
    Groningen, Netherlands
  • Chelsea and Westminster Hosptial/Royal Brompton Hosptial
    London, SW10 9NH, United Kingdom
08

References and documents

Publications

  • Thompson AB, Daughton D, Robbins RA, Ghafouri MA, Oehlerking M, Rennard SI. Intraluminal airway inflammation in chronic bronchitis. Characterization and correlation with clinical parameters. Am Rev Respir Dis. 1989 Dec;140(6):1527-37. doi: 10.1164/ajrccm/140.6.1527. PubMed 2604284 ↗
  • Innes AL, Woodruff PG, Ferrando RE, Donnelly S, Dolganov GM, Lazarus SC, Fahy JV. Epithelial mucin stores are increased in the large airways of smokers with airflow obstruction. Chest. 2006 Oct;130(4):1102-8. doi: 10.1378/chest.130.4.1102. PubMed 17035444 ↗
  • Ramos FL, Krahnke JS, Kim V. Clinical issues of mucus accumulation in COPD. Int J Chron Obstruct Pulmon Dis. 2014 Jan 24;9:139-50. doi: 10.2147/COPD.S38938. eCollection 2014. PubMed 24493923 ↗
  • Godwin BL, Coad JE, "Healing responses following cryothermic and hyperthermic tissue ablation. " SPIE Proceedings 2009: Volume 7181, p1-9
  • Sciurba FC, Ernst A, Herth FJ, Strange C, Criner GJ, Marquette CH, Kovitz KL, Chiacchierini RP, Goldin J, McLennan G; VENT Study Research Group. A randomized study of endobronchial valves for advanced emphysema. N Engl J Med. 2010 Sep 23;363(13):1233-44. doi: 10.1056/NEJMoa0900928. PubMed 20860505 ↗
  • Shah PL, Zoumot Z, Singh S, Bicknell SR, Ross ET, Quiring J, Hopkinson NS, Kemp SV; RESET trial Study Group. Endobronchial coils for the treatment of severe emphysema with hyperinflation (RESET): a randomised controlled trial. Lancet Respir Med. 2013 May;1(3):233-40. doi: 10.1016/S2213-2600(13)70047-X. Epub 2013 Apr 23. PubMed 24429129 ↗
  • Gibson PG. Cough is an airway itch? Am J Respir Crit Care Med. 2004 Jan 1;169(1):1-2. doi: 10.1164/rccm.2310009. No abstract available. PubMed 14695099 ↗
  • Jeffery P, Holgate S, Wenzel S; Endobronchial Biopsy Workshop. Methods for the assessment of endobronchial biopsies in clinical research: application to studies of pathogenesis and the effects of treatment. Am J Respir Crit Care Med. 2003 Sep 15;168(6 Pt 2):S1-17. doi: 10.1164/rccm.200202-150WS. No abstract available. PubMed 14555461 ↗
  • Pulmonary Physiology, Levitzky M. 7th ed. 2007, The McGraw-Hill Companies
  • Smith BM, Hoffman EA, Rabinowitz D, Bleecker E, Christenson S, Couper D, Donohue KM, Han MK, Hansel NN, Kanner RE, Kleerup E, Rennard S, Barr RG. Comparison of spatially matched airways reveals thinner airway walls in COPD. The Multi-Ethnic Study of Atherosclerosis (MESA) COPD Study and the Subpopulations and Intermediate Outcomes in COPD Study (SPIROMICS). Thorax. 2014 Nov;69(11):987-96. doi: 10.1136/thoraxjnl-2014-205160. Epub 2014 Jun 13. PubMed 24928812 ↗
  • Agrawal A. Interventional Pulmonology: Diagnostic and Therapeutic Advances in Bronchoscopy. Am J Ther. 2021 Feb 9;28(2):e204-e216. doi: 10.1097/MJT.0000000000001344. PubMed 33590989 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 23, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02483637
Lead sponsor
CSA Medical, Inc.
Responsible party
Sponsor
First posted
Jun 29, 2015
Start date
Feb 2016
Primary completion
May 2019
Completion
May 20, 2022
Last update
Feb 23, 2023

Study contacts

Heather Nigro
study director · CSA Medical

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2023. You cannot join it, but the record below documents what was studied.

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