bronchoscopic release of air trapped in hyperinflated emphysematous lung - study 3

Conditions: COPD; Emphysema

Summary: the objective of this study is to assess the safety and efficacy of apreo breathe system when used to support native airways and release trapped air in the treatment of adult copd patients with emphysema suffering from dyspnea due to hyperinflation despite optimal medical treatment. the apreo breathe airway scaffold is a permanent implant designed to tent open native airways. the study will include up to 250 participants at up to 25 study centers located in the united states and europe. study subjects will be followed for 3 years. the main questions it aims to answer are: is it safe? does it work?

prospective, randomized, two arm, parallel group, concurrently controlled, open-label, multi-center clinical trial following up to 250 participants to 3 years. each site will participate in a roll-in phase prior to participation in the randomized phase of the study. each site will enroll up to 2 subjects in this phase. up to 50 subjects may be enrolled into the roll-in cohort. up to 200 subjects with bilateral emphysema will be randomized at up to 25 centers in the united states centers and europe. in the randomized cohort, subjects will be randomized to either a treatment or control group in a 2:1 ratio. * optimal medical management: all subjects (roll-in and randomized) will receive optimal medical management tailored to patient needs and per standard of care and as outlined in the 2024 gold report. this may include smoking cessation, vaccination, long-acting bronchodilator therapy, corticosteroids (when appropriate), and participation in or maintenance of an exercise program or pulmonary rehabilitation program. * treatment group: 133 subjects will receive optimal medical management and apreo implant placements. treatment group subjects will undergo a single bronchoscopy with bilateral placement of up to 3 implants per lung in appropriately selected target airways. appropriate target segments shall be based on segmental and lobar information (i.e. airway dimensional, emphysematous destruction, volumetric information, hetero/homogeneity) provided in the quantitative ct (qct) report for each patient. * control group: 67 subjects will receive optimal medical management. control group subjects will be allowed the opportunity to cross over and receive the breathe treatment after their month 12 visit and within 15 months from their baseline visit. subjects will undergo follow-up assessments at months 1, 3, 6 and 12, and years 2 and 3 post-procedure (treatment group) or post-randomization (control group). these visits will involve adverse event assessment, questionnaires, pulmonary function testing, and inspiratory/ expiratory ct scans. control group subjects electing crossover will then have additional follow-ups at 7- and 30-days post procedure, and 6 months post procedure. control group subjects not electing crossover will be exited from the study after month 12.

Eligibility criteria:
* inclusion criteria 1. subject is at least 40, but not older than 84, years of age. 2. subject has body mass index (bmi) of between 18 and 32, inclusive. 3. subject has completed a documented pulmonary rehabilitation program within 12 months prior to baseline. 4. subject has mmrc score ≥ 2. 5. subject can walk ≥100 meters in 6 minutes. 6. subject has ≥25% emphysema destruction score in each lung as quantified on baseline hrct scan (low attenuation area less than -950hu) as determined by the ct core lab. 7. subject has homogeneous or heterogeneous emphysema, and at least one lung has a 15% difference between upper and lower lobes in emphysema destruction score (-910hu) as determined by the ct core lab. 8. subject has at least one target lobe with destruction score(s) of ≥35% with \< -950 hounsfield units on thin slice inspiratory ct, as determined by the ct core lab. 9. subject has pre-procedure post-bronchodilator rv ≥ 180% predicted. 10. subject has pre-procedure post-bronchodilator fev1/ fvc \< 0.70. 11. subject has a pre-procedure post-bronchodilator fev1 percent predicted of ≥15% and ≤45%. 12. subject has pre-procedure post-bronchodilator rv/tlc ≥ 0.55. 13. subject has pre-procedure dlco ≥ 20%. 14. subject has been receiving optimal medical management tailored to subject needs for 2 months prior to enrollment. 15. subject has not actively smoked (including tobacco, marijuana, e-cigarettes, vaping, etc.) within the last 4 months, and agrees to smoking cessation during the study. 16. subject has received preventative vaccinations (or documented clinical intolerance) against potential respiratory infections, including pneumococcus, influenza, rsv (subjects \>60 yrs. old) and covid-19, consistent with local recommendations or policy. 17. in the opinion of the primary investigator, subject can undergo bronchoscopy under general anesthesia and is able to adhere to the study follow-up schedule. 18. subject has provided written informed consent. * exclusion criteria 1. subject has known unresolved lower respiratory tract infection (e.g., pneumonia, mycobacterium avium-intracellulare infection (mai), fungus, tuberculosis). 2. subject has a steroid-dependent condition requiring (e.g. ≥10 mg oral corticosteroid per day). 3. subject has bilateral lobar emphysematous destruction scores of \>70% percent of voxels with \<-950 hounsfield units on thin slice inspiratory ct, as determined by the ct core lab. 4. subject has arterial or capillary blood on room air: paco2 \> 50 mmhg (8 kpa) or pao2 ≤ 45 mmhg (6 kpa). 5. subject has had ≥2 hospitalization for acute exacerbations of copd or ≥3 moderate exacerbations/respiratory infections in the year prior to enrollment. 6. subject has had previous lung volume reduction surgery, lobectomy, pneumonectomy, segmentectomy, bullectomy, lung transplantation, vapor, glue, or other pulmonary device implant (unless the device has been removed at least 3 months prior to consent). 7. subject has known or suspected history of pulmonary arterial hypertension (e.g. pasp \> 50mmhg on echocardiogram in absence of confirmation on a right heart catheterization or mpap \> 25mmhg on a right heart catheterization). 8. subject has presence of a giant bulla (≥ 30% of hemithorax). 9. subject has significant symptom burden due to currently active adult asthma based on gina criteria and/or chronic bronchitis as their primary diagnosis. 10. subject has presence of suspicious radiological abnormalities on hrct scan such as pulmonary nodule/infiltrate that in judgement of the pi, may require intervention during course of the study. 11. subject has clinically significant bronchiectasis (\>4 tbs / 45ml mucus production/day, per subject estimate) influencing subject's copd symptoms. 12. subject has unresolved lung cancer. 13. subject has a serious medical condition that, in the primary investigator's opinion, could compromise patient safety or confound the interpretation of the patient's response to therapy (e.g., congestive heart failure, cardiomyopathy (documented lvef ≤40%), or myocardial infarction in the past year, renal failure, liver disease cerebrovascular accident within the past 6 months, uncontrolled diabetes (hba1c \>8%), uncontrolled hypertension (diastolic bp \>110 mmhg or systolic \>200 mmhg) or autoimmune disease requiring treatment with immunosuppressant medications or a disease requiring chemotherapy. 14. subject is on anticoagulant or antiplatelet therapy for cardiovascular indications and, at the discretion of the primary investigator, is unable to have anticoagulants withheld for a bronchoscopy procedure per institution's standard of care. 15. subject has invasive mechanical ventilator dependency. 16. subject is pregnant, lactating, or of childbearing potential and plans to become pregnant during study duration. 17. subject has known hypersensitivity to nitinol (nickel-titanium alloy) or its constituent metals (nickel or titanium). 18. subject is significantly immunocompromised, such as organ transplant recipients, those with congenital immune deficiencies, aids, or severe rheumatoid arthritis. 19. subject has sensitivity or allergy to medications necessary for bronchoscopy under general anesthesia. 20. subject is currently participating in another study involving an investigational product that could confound the study results or affect the subject's copd symptoms. 21. subject has within the 2 years prior to consent, had a severe respiratory infection with sars-cov-2 (covid-19) that required icu support with non-invasive and/or invasive mechanical ventilation.

Keywords: apreo copd emphysema breathe system hyperinflation air-trapping apreo breathe airway scaffold breathe implant airway scaffold apreo health