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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT06035120




Registration number
NCT06035120
Ethics application status
Date submitted
5/09/2023
Date registered
13/09/2023
Date last updated
16/10/2024

Titles & IDs
Public title
An Evaluation of the AeriSeal System for CONVERTing Collateral Ventilation Status in Patients with Severe Emphysema
Scientific title
An Evaluation of the AeriSeal System for CONVERTing Collateral Ventilation Status in Patients with Severe Emphysema: the CONVERT II Trial
Secondary ID [1] 0 0
630-2000-01
Universal Trial Number (UTN)
Trial acronym
CONVERT_II
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Emphysema, Pulmonary 0 0
Emphysema or COPD 0 0
Condition category
Condition code
Respiratory 0 0 0 0
Other respiratory disorders / diseases

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Treatment: Devices - AeriSeal System

Experimental: AeriSeal - All enrolled subjects meeting final eligibility will undergo the AeriSeal procedure to block collateral ventilation by closing the lobar fissure gaps or collateral air channels.


Treatment: Devices: AeriSeal System
The AeriSeal System comprises AeriSeal Foam and the AeriSeal Balloon Catheter Preparation Kit that is used for bronchoscopic delivery of AeriSeal Foam to the targeted regions of the lung.
Intervention code [1] 0 0
Treatment: Devices
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Converters, responder rate
Timepoint [1] 0 0
45 days post-AeriSeal treatment (index or repeat)
Secondary outcome [1] 0 0
Post-bronchodilator forced expiratory volume in 1 second (FEV1), responder rate
Timepoint [1] 0 0
Month 6 post-Zephyr Valve
Secondary outcome [2] 0 0
Residual volume (RV), responder rate
Timepoint [2] 0 0
Month 6 post-Zephyr Valve
Secondary outcome [3] 0 0
Treated lobe volume reduction (TLVR) by high-resolution computed tomography (HRCT), responder rate
Timepoint [3] 0 0
Month 6 post-Zephyr Valve
Secondary outcome [4] 0 0
St. George's Respiratory Questionnaire (SGRQ), responder rate
Timepoint [4] 0 0
Month 6 post-Zephyr Valve

Eligibility
Key inclusion criteria
1. Subject is willing and able to provide informed consent and to participate in the study.
2. Subject is aged = 22 and = 80 years at the time of the ICF signature date.
3. Subject has completed a documented pulmonary rehabilitation (in clinic or home-based) program within 6 months prior to Baseline.
4. Subject has stopped smoking for at least 8 weeks prior to the ICF signature date as confirmed by carboxyhemoglobin or cotinine levels.
5. Subject has an HRCT from the screening institution within 3 months of the ICF signature date with the following findings at -910 Hounsfield Units:

1. At least one (1) lobe with segmental emphysema destruction score = 50%.
2. Subject has heterogenous emphysema, defined as difference in emphysema destruction score of = 15 between the density scores of the target lobe and the ipsilateral non-target lobe(s) per QCT report with % voxel density of < -910 HU. For non-target lobes that include the RML, calculate the combination of non-target lobes as a single density score using volume-weighted percent.
3. LUL, LLL, RUL, RLL, or RUL+RML are targets for valve intervention.
4. Subject has a gap in the interlobar fissure that corresponds to one or more segments and the fissure(s) contacting the target lobe is = 80% complete per QCT report.
5. Subject has 98% of the fissure gap confined to a maximum of 3 segments within the target lobe per Fissure Targeting Report (FTR).
6. Subject has 6MWD = 250 m and = 450 m.
7. Subject has clinically significant dyspnea with an mMRC score of = 2.
8. Subject has post-bronchodilation FEV1 = 15% predicted and = 45% predicted.
9. Subject has an FEV1/FVC ratio of < 0.7.
10. Subject has post-bronchodilation TLC, measured by body plethysmography, = 100% predicted.
11. Subject has post-bronchodilation RV = 175% predicted, measured by body plethysmography.
12. Subject has post-bronchodilation DLCO = 20% predicted.
13. Subject has received preventative vaccinations against potential respiratory infections, including COVID-19, consistent with local recommendation or policy.
14. Subject is on optimal medical management for more than one month prior to the ICF signature date.
15. Subject has collateral ventilation (CV+) as confirmed per the Chartis assessment prior to the AeriSeal Index Procedure.
Minimum age
22 Years
Maximum age
80 Years
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
1. Subject has prior lung volume reduction surgery, lobectomy or pneumonectomy, lung transplantation, airway stent placement, pleurodesis, or BLVR of any type, except BLVR using Zephyr Valve with < 50% TLVR at 6 months, followed by valve removal > 6 months prior to ICF signature date.
2. Subject has visible radiological abnormality on HRCT scan such as pulmonary nodule greater than 0.8 cm in diameter (does not apply, if present for 2 years or more without increase in size or if deemed benign by biopsy) or active pulmonary infection (e.g., unexplained parenchymal infiltrate, significant interstitial lung disease or significant pleural disease).
3. Post-COVID-19 pathology on CT, including ground glass opacities with or without consolidation, adjacent pleura thickening, interlobular septal thickening, or air bronchograms.
4. Large bullae encompassing greater than 1/3 of the total lung.
5. Subject had 3 or more COPD exacerbations requiring hospitalization within 12 months preceding the ICF signature date or a COPD exacerbation requiring hospitalization within 8 weeks of the ICF signature date. Subjects may be re-considered for future enrollment.
6. Subject has asthma as their primary diagnosis.
7. Subject has chronic bronchitis (defined as greater than 4 tablespoons of sputum production per day) as their primary diagnosis.
8. Subject has clinically significant bronchiectasis.
9. Subjects with evidence of active respiratory infection should be considered for enrollment only after satisfactory resolution.
10. Subject requires invasive ventilatory support. Note: The use of Continuous Positive Airway Pressure (CPAP) or BiPAP devices for sleep apnea is permitted.
11. Subject has severe gas exchange abnormalities as defined by any one of the following tests, conducted at rest, on room air, as tolerated.

* PaCO2 = 50 mm Hg (7.3 kPa)
* PaO2 < 45 mm Hg (6.0 kPa)
12. Subject has pulmonary hypertension, defined as mean pulmonary systolic pressure > 45 mm Hg.
13. Subject has known documented alpha-1 antitrypsin deficiency.
14. Subject has clinically significant hematological disorder.
15. Subject has recent significant unplanned or unexplained weight loss or other relevant comorbidities considered by the investigator to be potentially confounding or limiting to the subject's participation in the study.
16. Subject has non-atrial arrhythmias or conduction abnormalities on EKG.
17. Subject has high cardiac risk after undergoing cardiac risk assessment in accordance with published guidelines (Fleisher 2007) or has ischemic heart disease, congestive heart failure, cerebrovascular disease (stroke or TIA within 6 months of the ICF signature date), or serum creatinine > 2.0 mg/dL (177 µmol/L).
18. Subject has uncontrolled exercise induced syncope.
19. Subject has evidence of severe disease which in the judgment of the investigator may compromise the anticipated treatment effect or the subject's survival for the duration of at least 12 months.
20. Subject has any other condition that the investigator believes would interfere with the intent of the study or would make participation not in the best interest of the subject including but not limited to alcoholism, high risk for drug abuse, or noncompliance in returning for follow-up visits.
21. Subject cannot tolerate corticosteroids or relevant antibiotics.
22. Subject use of systemic corticosteroids > 20 mg/day prednisolone or equivalent within four (4) weeks of the ICF signature date. Subjects may be re-considered for future enrollment.
23. Subject use of immunosuppressive agents within four (4) weeks of the ICF signature date. Subjects may be re-considered for future enrollment.
24. Subject is unable to temporarily discontinue heparins and oral anticoagulants (e.g., warfarin, dicumarol) according to local pre-procedural protocols. Note: Antiplatelet drugs including aspirin, thienopyridines and ticagrelor are permitted.
25. Subject has allergy or sensitivity to medications required to safely perform bronchoscopy under conscious sedation or general anesthesia.
26. Subject has known allergy to the following device components: Polyether block amide (PEBAX), Polyvinyl Alcohol or Glutaraldehyde, Nitinol (nickel-titanium) or its constituent metals (nickel or titanium) or Silicone.
27. Subject is a female who is pregnant (positive ßHCG Pregnancy test), breast-feeding, or planning to be pregnant in the next 12 months.
28. Subject has Body Mass Index < 18 kg/m2 or > 35 kg/m2.
29. Subject participated in an investigational study of a drug, biologic, or device not currently approved for marketing within 30 days prior to the ICF signature date. Note: Subjects being followed as part of a long-term surveillance of a non-pulmonary study that has reached its primary endpoint are eligible for participation in this study.

Study design
Purpose of the study
Treatment
Allocation to intervention
Not applicable
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?



Intervention assignment
Single group
Other design features
Phase
Not applicable
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Recruiting
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
22/02/2024
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
31/03/2028
Actual
Sample size
Target
200
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)
Recruitment hospital [1] 0 0
Royal Adelaide Hospital - Adelaide
Recruitment hospital [2] 0 0
Wesley Hospital - Brisbane
Recruitment hospital [3] 0 0
Macquarie University - Macquarie Park
Recruitment postcode(s) [1] 0 0
- Adelaide
Recruitment postcode(s) [2] 0 0
- Brisbane
Recruitment postcode(s) [3] 0 0
- Macquarie Park
Recruitment outside Australia
Country [1] 0 0
United States of America
State/province [1] 0 0
Michigan
Country [2] 0 0
United States of America
State/province [2] 0 0
Pennsylvania
Country [3] 0 0
Austria
State/province [3] 0 0
Vienna
Country [4] 0 0
Denmark
State/province [4] 0 0
Copenhagen
Country [5] 0 0
France
State/province [5] 0 0
Limoges
Country [6] 0 0
France
State/province [6] 0 0
Strasbourg
Country [7] 0 0
France
State/province [7] 0 0
Toulouse
Country [8] 0 0
Germany
State/province [8] 0 0
Essen
Country [9] 0 0
Germany
State/province [9] 0 0
Halle
Country [10] 0 0
Germany
State/province [10] 0 0
Hamburg
Country [11] 0 0
Germany
State/province [11] 0 0
Heidelberg
Country [12] 0 0
Italy
State/province [12] 0 0
Brescia
Country [13] 0 0
Netherlands
State/province [13] 0 0
Groningen
Country [14] 0 0
Spain
State/province [14] 0 0
Valencia
Country [15] 0 0
United Kingdom
State/province [15] 0 0
England

Funding & Sponsors
Primary sponsor type
Commercial sector/industry
Name
Pulmonx Corporation
Address
Country

Ethics approval
Ethics application status

Summary
Brief summary
This is a prospective, open-label, multi-center, single-arm study planned to enroll 200 subjects with heterogeneous emphysema and collateral ventilation (CV) in the target lobe. Subjects will undergo instillation of AeriSeal Foam in the target lobe and subsequent assessment of CV status using Chartis Pulmonary Assessment System. Subjects with CV- status will then undergo placement of Zephyr Valve in the target lobe for bronchoscopic lung volume reduction (BLVR) and be followed for 24 months.
Trial website
https://clinicaltrials.gov/study/NCT06035120
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 0 0
Anna K Gawlicka, PhD, MBA
Address 0 0
Pulmonx Corporation
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Christina Kutzavitch, PhD
Address 0 0
Country 0 0
Phone 0 0
+1 650-216-0134
Fax 0 0
Email 0 0
[email protected]
Contact person for scientific queries



Summary Results

For IPD and results data, please see https://clinicaltrials.gov/study/NCT06035120