DynamX Sirolimus Study Sirolimus Eluting Coronary Bioadaptor System

Coronary Artery Disease Clinical Trial

Official title:

Evaluation of a Thin Strut Metallic Coronary Device: the Elixir DynamXTM Sirolimus Eluting Coronary Bioadaptor System

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03634020
• Other study ID #: ELX-CL-1801
• Status: Completed
• Phase: N/A
• Start date: December 10, 2018
• Est. completion date: March 8, 2021

Study information

• Verified date: April 2021
• Source: Elixir Medical Corporation
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

To confirm the safety and performance of the DynamX Sirolimus-eluting Coronary Bioadaptor System (SECBS) in de novo native coronary artery lesions using clinical and imaging endpoints. Clinical follow-up will be conducted in all patients at 30 days, 6 and 12 months. Imaging follow-up will be conducted at 6 months.

Description:

The DynamX Sirolimus Study is a prospective, consecutive enrollment, single-arm study designed to enroll up to 30 patients requiring treatment of up to two de novo lesions ≤ 24 mm in length in vessels ≥ 2.5 mm and ≤ 3.5 mm in diameter. One or two designated target lesions, located in separate epicardial vessels (RCA, LCX or LAD), and meeting the inclusion/exclusion criteria may be treated with the DynamX SECBS. Alternatively, one target lesion may be treated with the DynamX SECBS after successful, uncomplicated treatment of a non-target lesion, located in a separate epicardial vessel, with any commercially-available DES. Acceptable example: non-target RCA lesion and LAD target lesion. Not acceptable example: LAD non-target lesion and 1st diagonal target lesion. The primary safety endpoint is Target Lesion Failure at 6 months. TLF is a composite endpoint defined as cardiac death, target vessel MI, and clinically-indicated target lesion revascularization The primary efficacy endpoint is late lumen loss at 6 months, assessed by angiography Additional secondary safety and effectiveness endpoints will be evaluated at 30 days, 6 and 12 months Using visual assessment, the target lesion must measure ≥ 2.5 mm and ≤ 3.5 mm in diameter and ≤ 24 mm in length able to be covered by a single DynamX Sirolimus Bioadaptor including 2 mm of healthy vessel on either side of the planned treatment area. The patient will be eligible for stent (also called bioadaptor) implantation only after satisfactory lesion pre-dilatation defined as: ≥ TIMI 2 flow, and no dissection greater than Grade B (NHLBI) able to be covered with a single DynamX SECBS

Recruitment information / eligibility

• Status: Completed
• Enrollment: 44
• Est. completion date: March 8, 2021
• Est. primary completion date: March 8, 2021
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 80 Years

Eligibility

Inclusion Criteria:

1. Patient must be at least 18 years of age

2. Patient is able to understand the risks, benefits and treatment alternatives of receiving the DynamX Sirolimus Eluting CBS and provide written informed consent, as approved by the NZ Ethics Committee, prior to any clinical study-related procedure

3. Patient must have evidence of myocardial ischemia (e.g., stable or unstable angina, silent ischemia, positive functional study or electrocardiogram (ECG) changes consistent with ischemia)

4. Patient must be an acceptable candidate for coronary artery bypass graft (CABG) surgery

5. Women of childbearing potential with a negative pregnancy test within 7 days and women who are not pregnant or nursing

6. Patient must agree to undergo all clinical study required follow up visits, angiograms, and imaging testing

7. Patient must agree not to participate in any other clinical research study for a period of one year following the index procedure Angiographic inclusion criteria- Target Lesion/Vessel

8. Target lesion(s) must be located in a native coronary artery with a vessel diameter of = 2.5 and =3.5 mm assessed visually or by online QCA

9. Target lesion(s) must measure = 24 mm in length

10. Target lesion(s) must be in a major artery or branch with a visually estimated stenosis of = 50% and < 90% with a TIMI flow of = 2. When two target lesions are treated, they must be located in separate major epicardial vessels

11. The lesion(s) must be successfully pre-dilated (less than 35% DS) prior to enrollment

12. The target lesion length is 24 mm and able to be covered by a single DynamX Sirolimus Bioadaptor with 2 mm of healthy vessel on either side of planned implantation site

13. Treatment of a single, non-target lesion located in a separate major epicardial vessel

Exclusion Criteria:

1. Patient has a diagnosis of ST elevation myocardial infarction (STEMI) within 72 hours preceding the index procedure, and CK and CK-MB have not returned within normal limits at the time of procedure

2. Patient requires the use of rotational atherectomy during the index procedure

3. Patient has current unstable ventricular arrhythmias

4. Patient has a known left ventricular ejection fraction (LVEF) < 30%

5. Patient has received a heart transplant or any other organ transplant or is on a waiting list for an organ transplant

6. Patient is receiving or scheduled to receive chemotherapy for malignancy within 30 days prior to or after the procedure

7. Patient is receiving immunosuppression therapy, other than steroids or has known immunosuppressive or autoimmune disease (e.g. human immunodeficiency virus, systemic lupus erythematosus etc.)

8. Patient has a known hypersensitivity or contraindication to aspirin, both heparin and bivalirudin, clopidogrel, prasugrel or ticagrelor, Sirolimus, CoCr alloys, PLLA polymers or contrast sensitivity that cannot be adequately pre-medicated

9. Elective surgery is planned within the first 6 months after the procedure that will require discontinuing either aspirin or clopidogrel or other P2Y12 inhibitors.

10. Patient has a platelet count < 100,000 cells/mm3 or > 700,000 cells/mm3, a WBC of < 3,000 cells/mm3, or documented liver disease.

11. Patient has severe renal dysfunction (CKD IV or V, eGFR <30) or is on dialysis.

12. Patient has a history of bleeding diathesis or coagulopathy or will refuse blood transfusions

13. Patient has had a cerebrovascular accident (CVA) or transient ischemic neurological attack (TIA) within the past six months

14. Patient has had a significant GI or urinary bleed within the past six months

15. Patient has a condition that precludes safe 6 French sheath insertion; or other medical conditions or known history of substance abuse (alcohol, cocaine, heroin etc.) that may cause non-compliance with the clinical study plan, confound the data interpretation or associated with a limited life expectancy (i.e., less than one year)

16. Patient is already participating in another clinical study which has not reached the primary endpoint (long-term follow-up is not an exclusion) Angiographic Exclusion Criteria Target Lesion/Vessel

1. Target/Vessel / Target lesion(s) meets any of the following criteria:

1. Aorto-ostial location

2. Left main location

3. Located within 5 mm of the origin of the LAD or LCX

4. Located within an arterial or saphenous vein graft or distal to a diseased arterial or saphenous vein graft

5. Lesion involving a bifurcation with a side branch >2mm in diameter

6. Previous placement of a stent within 10 mm of the target lesion

7. Total or sub-total occlusion (TIMI flow =1)

8. The proximal target vessel or target lesion is severely calcified by visual assessment, or the lesion prevents full pre-dilatation balloon expansion

9. Previous intervention restenosis 2. The target vessel contains visible thrombus 3. Another clinically-significant lesion (>50%) is located in the same major epicardial vessel as the target lesion 5. Target vessel was previously treated with any type of PCI < 6 months prior to index procedure 6. Non-Target vessel was previously treated with any type of PCI < 30 days prior to the index procedure

Related Conditions & MeSH terms

• Coronary Artery Disease

Intervention

Device:
• DynamX Sirolimus-eluting Coronary Bioadaptor System
de novo native coronary artery lesions

Locations

Country	Name	City	State
New Zealand	Auckland City Hospital	Auckland
New Zealand	Middlemore Hospital	Auckland
New Zealand	North Shore Hospital	Auckland
New Zealand	Christchurch Hospital	Christchurch
New Zealand	Dunedin Hospital	Dunedin
New Zealand	Waikato Hospital	Hamilton
New Zealand	Wellington Hospital	Wellington

Sponsors (1)

Lead Sponsor	Collaborator
Elixir Medical Corporation

Country where clinical trial is conducted

New Zealand, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Qualitative coronary angiography	in-device late lumen loss	6 months
Other	Intravascular ultrasound imaging	Change in mean lumen area from post-procedure to 6-month follow-up	6 months
Primary	Target Lesion (s) Failure	composite endpoint of cardiac death, target vessel MI and clinically-indicated TLR	6 months
Secondary	Target Lesion (s) Failure	composite endpoint of cardiac death, target vessel MI and clinically-indicated TLR	1 month
Secondary	Target Lesion (s) Failure	composite endpoint of cardiac death, target vessel MI and clinically-indicated TLR	12 month
Secondary	cardiac death	death from a cardiac cause	1 month
Secondary	Cardiac Death	death from a cardiac cause	6 months
Secondary	Cardiac Death	death from a cardiac cause	12 months
Secondary	Non-Cardiac Death	death from a non-cardiac cause	1 month
Secondary	Non-Cardiac Death	death from a non-cardiac cause	6 months
Secondary	Non-Cardiac Death	death from a non-cardiac cause	12 months
Secondary	myocardial infarction	all	1 month
Secondary	myocardial infarction	all	6 months
Secondary	myocardial infarction	all	12 months
Secondary	myocardial infarction	related to the target vessel	1 month
Secondary	myocardial infarction	related to the target vessel	6 months
Secondary	Target Lesion Revascularization	Clinically indicated repeat intervention within the target lesion	1 month
Secondary	Target Lesion Revascularization	Clinically indicated repeat intervention within the target lesion	6 months
Secondary	Target Lesion Revascularization	Clinically indicated repeat intervention within the target lesion	12 months
Secondary	Target Vessel Revascularization	Clinically indicated repeat intervention within the target vessel	1 month
Secondary	Target Vessel Revascularization	Clinically indicated repeat intervention within the target vessel	6 months
Secondary	Target Vessel Revascularization	Clinically indicated repeat intervention within the target vessel	12 months
Secondary	Device Thrombosis	definite and probable as classified by an Academic Research Consortium	1 month
Secondary	Device Thrombosis	definite and probable as classified by an Academic Research Consortium	6 months
Secondary	Device Thrombosis	definite and probable as classified by an Academic Research Consortium	12 months