A First-in-Man Study of IBS

Single Coronary Vessel Disease Clinical Trial

— IBS-FIM  

Official title:

A First-in-Man Study of Sirolimus-eluting Iron Bioresorbable Coronary Scaffold System (IBS)

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT03509142
• Other study ID #: IBS-FIM
• Status: Active, not recruiting
• Phase: N/A
• Start date: April 10, 2018
• Est. completion date: December 30, 2024

Study information

• Verified date: September 2021
• Source: Lifetech Scientific (Shenzhen) Co., Ltd.
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The study is a pilot clinical trial for Sirolimus-eluting Iron Bioresorbable Coronary Scaffold System（IBS）. The main purpose of this study is to evaluate the feasibility, preliminary safety and efficacy of IBS. To provide the basis for subsequent large-scale, multi-center, randomized controlled clinical trials of IBS.

Description:

A prospective, single-center, First-in-Man trial;

Study population: 45 subjects.

45 subjects will be randomly assigned into two cohorts: cohort 1(n=30), cohort 2(n=15)

The clinical follow up will be performed in all subjects at 1 month, 6 months, 1 year, 2 years, 3 years, 4 years, 5 years post procedure;

The Angiographic, Intra-Vascular Ultrasound (IVUS) and Optical Coherence Tomography (OCT) will be performed at 6 months and 2 years post procedure in cohort 1. The Angiographic, IVUS and OCT will be performed at 1 year and 3 years post procedure in cohort 2.

The primary study endpoints:

1. Target lesion failure (TLF) at 6 months post procedure

2. Late Lumen Loss at 6 months post procedure

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 45
• Est. completion date: December 30, 2024
• Est. primary completion date: July 19, 2019
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 75 Years

Eligibility

Inclusion Criteria:

All patients participating in this clinical trial must meet the following criteria:

1. Age of 18-75, males or non pregnancy females;

2. Subject must have evidence of myocardial ischemia (e.g., stable, unstable angina, post-infarct angina or silent ischemia) suitable for elective PCI;

3. One target lesion, and target lesion can be completely covered by a single stent;

4. Target lesion length = 18 mm, target lesion diameter between 3.0 mm to 3.5 mm (visual);

5. Visual assessment of target lesion stenosis =70%, TIMI blood flow= 1;

6. Subject who understand the purpose of testing, voluntary and informed consent, patients undergoing invasive imaging follow-up.

Exclusion Criteria:

Patients will be excluded if any of the following conditions apply:

General:

1. Within 1 week of any acute myocardial infarction or myocardial enzymes did not return to normal;

2. Implantation of stent in target vessel within 1 year, patients with planned intervention again within six months;

3. Patients who had coronary artery bypass (coronary artery bypass grafting);

4. Patients with contraindications for coronary artery bypass graft surgery;

5. Severe heart failure (NYHA class III and above) or left ventricular ejection fraction<40% (ultrasonic or left ventricular angiography);

6. Preoperative renal function: serum creatinine > 2.0 mg/dl or 177 mu mol/L; receiving hemodialysis;

7. Patients had ischemic stroke half a year before implantation, patients had transient ischemic attack 3 months before implantation, patients have high coagulation tendency judged by investigator or laboratory examination;

8. Bleeding, active gastrointestinal ulcers, brain hemorrhage or subarachnoid hemorrhage, contraindications on antiplatelet agents and anticoagulant therapy; patients would not allow to undergoing antithrombotic therapy;

9. Aspirin, clopidogrel, heparin, contrast agent, poly lactic acid polymer, rapamycin and metal allergies;

10. Patients who have a history of disease related to iron overload or iron disorder, such as hereditary hemochromatosis, etc;

11. The patient's life expectancy is less than 12 months;

12. Patient participated in other drug or medical device study and does not meet the primary study endpoint in clinical trials time frame;

13. Poor compliance and patients unable to complete the study in accordance with the requirements;

14. Patient with heart transplant;

15. The unstable arrhythmia, such as high risk ventricular extra systole and ventricular tachycardia;

16. Cancer needs chemotherapy;

17. Patients of immune suppression, autoimmune diseases, planned or undergoing immunosuppressive therapy;

18. Planning or being receiving long-term anticoagulant therapy, such as heparin, warfarin, etc;

19. With six months for elective surgery requires stop using aspirin and clopidogrel;

20. Blood test prompted platelet count < 100 x 10^9/L, or > 700 x 10^9/L, white blood cells < 3 x 10^9/L, or abnormal liver function (ALT, AST 3 times greater than normal range);

21. Patients with diffuse peripheral vascular disease; cannot use 6F catheter;

22. Patients with valvular surgery in the past.

Exclusion criteria by angiography:

1. Chronic total occlusion (TIMI blood flow=0 before implantation) , left main coronary artery lesion, ostial lesion, multiple vessel lesion, branch lesion and bridge lesion which branch vessel diameter = 2.0 mm (if the ostium of branch vessel stenosis >40% or needs balloon predilation); visible thrombus in target vessels;

2. Severe calcified lesions and distorted disease which unable to predilation, lesion not suitable for stent delivery and expansion;

3. In-stent restenosis;

4. Myocardial bridge is involved in target lesion;

5. In order to reach the target lesion, study stent has to go through the previous implanted stent;

6. Predilation balloon can't expand completely in target lesion site, judgment standard for fully expansion as below, patients are excluded when do not meet any item:

A.DS% < 40% (visual), highly recommend DS% =20% B.TIMI blood flow= class 3 (visual) C.No angiography complications (e.g., distal embolization, lateral branch closed) D.No interlining level NHLBI type D - F E.No continuous chest pain (> 5 minutes), and F.No lower or higher ST segment >5 minutes.

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Related Conditions & MeSH terms

• Single Coronary Vessel Disease

Intervention

Device:
• Sirolimus-eluting Iron Bioresorbable Coronary Scaffold System
Implantation of Sirolimus-eluting Iron Bioresorbable Coronary Scaffold System (IBS)

Locations

Country	Name	City	State
China	Beijing Fuwai hospital	Peking

Sponsors (1)

Lead Sponsor	Collaborator
Lifetech Scientific (Shenzhen) Co., Ltd.

Country where clinical trial is conducted

China, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Study Device related Composite Endpoint (Target Lesion Failure)	Target Lesion Failure is defined as the composited endpoints of including cardiac death, Target vessel related myocardial infarction (TV-MI) and clinical indicated target lesion revascularization (CI-TLR), also known as MACE (major adverse cardiac events).	6 months after implantation
Primary	Late Lumen Loss	Late Lumen Loss	6 months after implantation
Secondary	Immediate Success Rate	Device Success: Successfully transit and release the IBS at target lesion, then withdraw the delivery system. Immediate residual stenosis < 30% and TIMI blood flow is class 3 (visual).; Lesion Success: Any method of intervention therapy, the residual stenosis of the target lesion < 30% and TIMI blood flow is class 3(visual).	Immediate post procedure
Secondary	Clinical Success	Defined as based on lesion success, there is no major adverse cardiac events in the hospitalization period.	Hospitalized period post procedure within 7 days
Secondary	Performance Evaluation of IBS	4 class (Excellent, good, general, bad) to evaluate the push ability, performance of through the lesions, performance of cover the lesions, support force, withdraw ability.	Immediate post procedure
Secondary	Device related Composite Endpoint (DoCE)	Target Lesion Failure, defined as the composited endpoints of including cardiac death, target vessel related myocardial infarction (TV-MI) and clinical indicated target lesion revascularization (CI-TLR).	1 Month, 1 Year, 2 Years, 3 Years, 4 Years, 5 Years post procedure
Secondary	Patient related Clinical Composite Endpoint (PoCE)	Including all-cause mortality, all myocardial infarction and any revascularization.	1 Month, 6 Months, 1 Year, 2 Years, 3 Years, 4 Years, 5 Years post procedure
Secondary	Stent Thrombosis defined by ARC	Timing (acute, sub-acute, late and very late) Evidence (definite and probable)	Acute (0-24 hours), Subacute (24 hours-30 days), Late (30 days-1 year), Very late (after 1 year)
Secondary	Thickness of acute stent recoil (mm)	Angiographic Endpoint	Immediate post procedure
Secondary	In-stent, in-segment, proximal and distal minimum lumen diameter (MLD)	Angiographic Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	In-stent, in-segment, proximal and distal percent of diameter stenosis (DS, %)	Angiographic Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	In-stent, in-segment, proximal and distal late lumen loss (LLL)	Angiographic Endpoint	1 year, 2 years, 3 years
Secondary	In-stent, in-segment, proximal and distal angiographic defined restenosis (ABR)	Angiographic Endpoint	6 months, 1 year, 2 years, 3 years
Secondary	Vasomotion	Defined as the average diameter change of lumen diameter before and after using nitroglycerin.	6 months,1 year, 2 years, 3 years
Secondary	Analysis of neointimal thickness by OCT	Optical Coherence Tomography Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of proportion of strut coverage by OCT	Optical Coherence Tomography Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of incomplete strut apposition by OCT	Optical Coherence Tomography Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of percentage area obstruction by OCT	Optical Coherence Tomography Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of healing score by OCT	Optical Coherence Tomography Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of late recoil by OCT	Optical Coherence Tomography Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of vessel area by IVUS	Intra-Vascular Ultrasound Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of lumen area by IVUS	Intra-Vascular Ultrasound Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of scaffold area by IVUS	Intra-Vascular Ultrasound Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of neointimal area by IVUS	Intra-Vascular Ultrasound Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of percentage area obstruction by IVUS	Intra-Vascular Ultrasound Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of volumetric obstruction by IVUS	Intra-Vascular Ultrasound Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years
Secondary	Analysis of late recoil area by IVUS	Intra-Vascular Ultrasound Endpoint	Immediate post procedure, 6 months, 1 year, 2 years, 3 years