NCT04775108 - First-In-Human Clinical Study for Treatment of Severe Mitral Valve INsufficiency With Epygon™ TRanscatheter Mitral VAlve System | Crick

Eligibility

Sex: ALLMin age: 60 Years

Medical Language ↔ Plain English

Inclusion Criteria: 1. Patients of age ≥ 60 years. 2. Patients with primary or secondary severe symptomatic mitral valve regurgitation. 3. Patients with severe, symptomatic mitral regurgitation and who have been evaluated by a multidisciplinary Heart Team and deemed to be ineligible for conventional valve surgery and not eligible for transcatheter repair. 4. Patients with a left ventricular ejection fraction ≥ 30%. 5. Patients in NYHA functional classes III to IV. 6. Patients who have clearly accepted participation in this clinical study and who have signed the informed consent. 7. Patients who are willing to accept and undergo all protocol related requirements. 8. Patients not planning to transfer abroad. Exclusion Criteria: \- Clinical exclusion criteria (preoperative screening) 1. Patients involved in other clinical assessments for drugs or devices that could interfere or alter the study endpoints. 2. Patients with clinical/anatomical conditions unsuitable for a transapical surgical approach. 3. Patients who have previously undergone implantation of a transcatheter aortic valve prosthesis. 4. Patients with previous implantation of a mitral heart valve prosthesis. 5. Patients with previous implantation of a mitral annuloplasty ring. 6. Patients needing emergency or life-saving interventions. 7. Patients with a heavily calcified mitral annulus and/or anterior mitral leaflet. 8. Patients with active infection or endocarditis (suspect endocarditis included). 9. Patients with echocardiographic evidence of intracardiac mass or thrombus. 10. Patients which suffered an acute myocardial infarction within 30 days of the intended treatment (defined as: Q wave MI, or non-Q wave MI with elevation of CK-MB ≥ 3 times normal in the absence of pathological Q waves), if no assay for CK-MB was performed, elevation of CK level to \>2 times normal without new Q waves, or elevated Troponin level is also considered a non-Q wave MI). 11. Patients with an active peptic ulcer or upper GI bleeding within the prior 30 days. 12. Patients with a documented allergy towards contrast media, and to any compound of the investigated medical device. 13. Patients that have neurological disease severely affecting ambulation or day to day functioning. 14. Patients with any stroke within the prior 30 days. 15. Patients with senile dementia, according to the advice from a specialized neurologist. 16. Patients in whom transesophageal echocardiography (TEE) is contraindicated since TEE is used for both preoperative screening and guidance during implant procedure. 17. Patients who is unwilling or deemed by the Investigator to be unwilling to comply with the requirements of the protocol, or subject with a history of non-compliance. 18. Patients unable to understand and sign the Informed Consent Form in absence of legal representative. 19. Patients with a lack of capacity to consent. 20. Patients unable to read and write. \- Echographic exclusion criteria (preoperative screening) 21. Patients with left ventricular apex aneurysm; 22. Patients with aorto-mitral angle \<120°; 23. Patients with a systolic/diastolic mitral valve area assessed as not compatible with the sizing policy matrix defined by the Sponsor. \- Computerized Tomographic (CT) exclusion criteria (preoperative screening) 24. Patients with ventricular morphology (position of papillary muscles, ventricular wall hypertrophy) unsuitable with the study valve design; 25. Patients with aorto-mitral angle \<120°; 26. Patients with a systolic/diastolic mitral valve area assessed as not compatible with the sizing policy matrix defined by the Sponsor.

Outcomes

Primary Outcomes

Device Safety

defined as the absence of major device or procedure related serious adverse events evaluated on the following clinical events: 1. death 2. major cardiac structural complications (as per MVARC definitions) 3. life-threatening bleeding (MVARC scale) 4. any prosthesis-related dysfunction, migration, thrombosis, or other complication, that require surgery or repeated intervention. 5. myocardial infarction or coronary ischemia requiring PCI or CABG 6. severe hypotension, heart failure or respiratory failure requiring intravenous vasopressors or invasive or mechanical heart failure treatments such as ultrafiltration or hemodynamic assist devices, including intra-aortic balloon pumps or left ventricular or biventricular assist devices, or prolonged intubation for ≥ 48H 7. major vascular complications 8. stroke 9. stage 2 or 3 acute kidney injury (includes new dialysis)

Time frame: [Timeframe: at 30 days]

Device Success

1. Technical Success (as per MVARC definition) defined as alive patient at exit from procedure room, with all of the following: 1. Successful access, delivery and retrieval of the Epygon delivery system 2. Successful deployment and positioning of the Epygon Transcatheter mitral valve 3. Freedom from additional emergency surgery or re-intervention related to the device or access procedure. 2. Continued intended safety and performance of the device, including: 1. No evidence of structural or functional failure (as per MVARC definition) 2. No specific device-related technical failure issues and complications (as per MVARC definition) 3. Reduction of mitral regurgitation (MR) to either optimal (0+ to trace) or acceptable (reduced by at least 1 grade from baseline with no more than 2+ MR) without significant mitral stenosis (post-procedure EOA ≥ 1.5 cm2 with a transmitral gradient \< 5mmHg) and with no greater than mild (1+) paravalvular MR (and without associated hemolysis)

Time frame: [Timeframe: at 30 days]

Secondary Outcomes

Device Safety

defined as absence of major device or procedure related serious adverse events evaluated on the following clinical events: 1. death 2. major cardiac structural complications 3. life-threatening bleeding (MVARC scale) 4. any prosthesis-related dysfunction, migration, thrombosis, or other complication, that require surgery or repeated intervention. 5. myocardial infarction or coronary ischemia requiring PCI or CABG 6. severe hypotension, heart failure or respiratory failure requiring intravenous vasopressors or invasive or mechanical heart failure treatments such as ultrafiltration or hemodynamic assist devices, including intra-aortic balloon pumps or left ventricular or biventricular assist devices, or prolonged intubation for ≥ 48H 7. major access complications 8. stroke 9. stage 2 or 3 acute kidney injury (includes new dialysis)

Time frame: [Time frame: 3, 6, 12 months and yearly up to 5 years from implantation]

Patient success (as per MVARC definition)

All of the following must be present: 1. Device success (either optimal or acceptable) 2. Patient returned to the pre-procedural setting 3. No rehospitalizations or reinterventions for the underlying condition (e.g., mitral regurgitation, heart failure) 4. Improvement from baseline in symptoms (e.g., NYHA improvement by ≥ 1 functional class) 5. Improvement from baseline in functional status (e.g., 6-min walk test improvement by ≥ 50 m) 6. Improvement from baseline in quality-of-life (e.g., Kansas City Cardiomyopathy Questionnaire improvement by ≥ 10)

Time frame: [Time frame: 12 months from implantation]

Evaluation of clinical status on the basis of the NYHA functional classification

Time frame: [Time frame Preoperative, 30 days, 3, 6, 12 months and yearly up to 5 years from implantation]

Six-minute walk test

Time frame: [Time frame: Preoperative, 30 days, 3, 6, 12 months and yearly up to 5 years from implantation]

Quality of Life score (Kansas City Cardiomyopathy Questionnaire)

The Kansas City Cardiomyopathy Questionnaire is a 23-item, self-administered instrument that quantifies physical function, symptoms (frequency, severity and recent change), social function, self-efficacy and knowledge, and quality of life. Scores are transformed to a range of 0-100, in which higher scores reflect better health status.

Time frame: [Time frame: Preoperative, 3, 6, 12 months and yearly up to 5 years from implantation]

Hemodynamic performance assessed by echocardiography

1. Prosthetic mean atrio-ventricular ΔP \< 5 mm Hg 2. Prosthetic Effective Orifice Area (EOA) ≥ 1.5 cm2 3. Mitral valve regurgitation reduction (vs. preoperative) of at least 1 grade and not more than moderate (2+) 4. Prosthetic paravalvular valve leakage (PVL) not more than mild (1+) without hemolysis

Time frame: [Time frame: Preoperative on native mitral valve, Postoperative, 30 days, 3, 6, 12 months and yearly up to 5 years from implantation]

Technical Success (as per MVARC definition)

defined as alive patient at exit from procedure room, with all of the following: 1. Successful access, delivery and retrieval of the Epygon delivery system 2. Successful deployment and positioning of the Epygon Transcatheter mitral valve 3. Freedom from additional emergency surgery or re-intervention related to the device or access procedure.

Time frame: [Time Frame: immediately after procedure]

Device Success

1. Technical Success (as per MVARC definition) defined as alive patient at exit from procedure room, with all of the following: 1. Successful access, delivery and retrieval of the Epygon delivery system 2. Successful deployment and positioning of the Epygon bioprosthesis 3. Freedom from additional emergency surgery or re-intervention related to the device or access procedure. 2. Continued intended safety and performance of the device, including: 1. No evidence of structural or functional failure (as per MVARC definition) 2. No specific device-related technical failure issues and complications (as per MVARC definition) 3. Reduction of mitral regurgitation (MR) to either optimal (0+ to trace) or acceptable (reduced by at least 1 grade from baseline with no more than 2+ MR) without significant mitral stenosis (post-procedure EOA ≥ 1.5 cm2 with a transmitral gradient \< 5mmHg) and with no greater than mild (1+) paravalvular MR (and without associated hemolysis)

Time frame: [Time frame: 3, 6, 12 months and yearly up to 5 years from implantation]

Procedural Success

All of the following must be present: 1. Device success (either optimal or acceptable), And 2. Absence of major device or procedure related serious adverse events, including: 1. death 2. major cardiac structural complications (as per MVARC definitions) 3. life-threatening bleeding (MVARC scale) 4. any prosthesis-related dysfunction, migration, thrombosis, or other complication, that require surgery or repeated intervention. 5. myocardial infarction or coronary ischemia requiring PCI or CABG 6. severe hypotension, heart failure or respiratory failure requiring intravenous vasopressors or invasive or mechanical heart failure treatments such as ultrafiltration or hemodynamic assist devices, including intra-aortic balloon pumps or left ventricular or biventricular assist devices, or prolonged intubation for ≥ 48H 7. major vascular complications 8. stroke 9. stage 2 or 3 acute kidney injury (includes new dialysis).

Time frame: [Time frame: 30 days]

Incidence of adverse events