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Completed

NCT Number: NCT02176265

Qvanteq Bioactive Coronary Stent System First in Man (FIM) Clinical Investigation

Objective of this First in Man study is to assess feasibility and safety of Qvanteq's bioactive coronary stent for treatment of stable coronary artery disease patients with de novo coronary artery stenosis in native vessels.

The proprietary surface of Qvanteq's bioactive coronary stent improves the in-growth behavior of the stent in the treated vessel. In-vivo animal studies revealed fast in-growth (similar to BMS), which however is not resulting in excessive tissue overgrowth as observed in BMS but rather has an efficacy profile similar to drug-eluting stent (DES), meaning suppression of tissue overgrowth. This should reduce the risk of restenosis and thrombus formation despite the presence of a short term dual anti platelet therapy (DAPT). Furthermore, prolonged DAPT time as applied with current DES increases the bleeding risk of patients.

The study is a prospective, multicenter, open-label, single arm study; conducted in up to 6 cardiology centers in CH and NL. In total, approx. 35 patients will be enrolled. All patients will be treated with the Qvanteq's bioactive coronary stent. Clinical follow-up will occur at 1, 6 & 12 months post-stent implantation. All patients will undergo angiography assessment (QCA) and Optical Coherence Tomography investigation (OCT) at baseline and at 6 months follow-up. Baseline OCT should be performed after the successfully completed angiographic procedure (documentary OCT). 1 and 12 months clinical follow-ups are conducted via telephone.

Primary Angiographic endpoint is in-stent Late Lumen Loss at 6 months; assessed by off-line QCA. Primary OCT endpoint is mean neointimal thickness at 6 months; assessed by off-line OCT analysis.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Thoraxcentrum Twente, Medisch Spectrum Twente, Enschede, Netherlands

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Subjects must be at least 18 years of age
  • Evidence of myocardial ischemia without elevated cardiac biomarkers (e.g. stable or unstable angina with stable haemodynamic condition, silent ischemia demonstrated by positive territorial functional study)
  • The patient has a planned intervention of one single de novo lesion in one or two separate major epicardial territories (LAD, LCX, or RCA).
  • The lesion must have a visually estimated diameter stenosis of ≥ 50% and < 100%
  • Lesion length must be ≤16 mm
  • The vessel size must be between 2.5 and 3.5 mm
  • Written informed consent
  • The patient agrees to the follow-up visits including angiographic follow-up and OCT control at 6 months

Key Exclusion Criteria:

  • Evidence of ongoing acute myocardial infarction (AMI) in ECG and/or elevated cardiac biomarkers (according to local standard hospital practice) have not returned within normal limits at the time of procedure.
  • Patient suffered from stroke/TIA or myocardial infarction during the last 6 months
  • LVEF <30%
  • Platelet count <100,000 cells/mm3 or >400,000 cells/mm3, a WBC of <3,000 cells/mm3, or documented or suspected liver disease (including laboratory evidence of hepatitis)
  • Known renal insufficiency (Creatinine clearance less than 30 mL/Min), or subject on dialysis, or acute kidney failure
  • Patient undergoing planned surgery within 6 months with the necessity to stop ASA
  • Patient requiring prolonged DAPT for other diagnoses (>1 month)
  • History of bleeding diathesis or coagulopathy
  • Patient requiring oral anticoagulation (Coumadin, NOAC)
  • The patient is a recipient of a heart transplant
  • Known hypersensitivity or contraindication to aspirin, heparin, clopidogrel or cobalt-chromium
  • Other medical illness (e.g. cancer, stroke with neurological deficiency) or known history of substance abuse (alcohol, cocaine, heroin etc.) as per physician judgment that may cause non-compliance with the protocol or confound the data interpretation or is associated with a limited life expectancy
  • Female of child bearing potential (age <50 years and last menstruation within the last 12 months), who did not underwent tubal ligation, ovariectomy or hysterectomy.
  • Previous CABG

Angiographic Exclusion Criteria:

  • Severe tortuous, calcified or angulated coronary anatomy of the study vessel that in the opinion of the investigator would result in suboptimal imaging or excessive risk of complication from placement of an OCT catheter
  • Target lesion in left main stem.
  • Target lesion involves a side branch > 2.0mm in diameter
  • Aorto-ostial target lesion (within 3 mm of the aorta junction).
  • Total occlusion or TIMI flow <3, prior to wire crossing
  • The target vessel contains visible thrombus
  • Restenotic lesion.

Treatment and study plan

Qvanteq bioactive coronary stent

Device

PCI

Primary outcomes

  1. In-stent Late Lumen Loss (LLL) assessed by off-line QCA

    Time frame: At 6 months after stent implantation

  2. Mean neointimal thickness assessed by off-line OCT analysis

    Time frame: At 6 months after stent implantation

Secondary outcomes

  1. Acute lumen gain assessed by off-line QCA

    Time frame: At 6 months after stent implantation

  2. In-segment Late Lumen Loss assessed by off-line QCA

    Time frame: At 6 months after stent implantation

  3. Mean Lumen Diameter (MLD) assessed by off-line QCA

    Time frame: At 6 months after stent implantation

  4. Diameter stenosis assessed by off-line QCA

    Time frame: At 6 months after stent implantation

  5. Binary restenosis (diameter stenosis > = 50%) assessed by off-line QCA

    Time frame: At 6 months after stent implantation

  6. Prolapse area/volume assessed by off-line OCT analysis

    Time frame: At baseline

  7. Mean/minimal lumen diameter/area/volume assessed by off-line OCT analysis

    Time frame: At baseline and at 6 months after stent implantation

  8. Mean/minimal stent diameter/area/volume assessed by off-line OCT analysis

    Time frame: At baseline and at 6 months after stent implantation

  9. Stent symmetry assessed by off-line OCT analysis

    Time frame: At baseline and at 6 months after stent implantation

  10. Stent expansion assessed by off-line OCT analysis

    Time frame: At baseline and at 6 months after stent implantation

  11. Incomplete strut apposition assessed by off-line OCT analysis

    Time frame: At baseline and at 6 months after stent implantation

  12. In-stent neointimal hyperplasia volume obstruction (%) assessed by off-line OCT analysis

    Time frame: At 6 months after stent implantation

  13. Neointimal hyperplasia area/volume assessed by off-line OCT analysis

    Time frame: At 6 months after stent implantation

  14. Mean/maximal thickness of the struts coverage assessed by off-line OCT analysis

    Time frame: At 6 months after stent implantation

  15. Percentage number of covered struts assessed by off-line OCT analysis

    Time frame: At 6 months after stent implantation

  16. Percentage of incomplete apposed struts assessed by off-line OCT analysis

    Time frame: At 6 months after stent implantation

  17. Healing score assessed by off-line OCT analysis

    Time frame: At 6 months after stent implantation

  18. Acute success (device and procedural)

    Time frame: At baseline

  19. Device-oriented composite endpoints (cardiac death, MI not clearly attributable to a non-intervention vessel, clinically indicated target lesion revascularization)

    Time frame: At 1, 6 and 12 months after stent implantation

  20. Myocardial infarction (Q-wave, Non q-wave)

    Time frame: At 1, 6 and 12 months after stent implantation

  21. Clinically indicated revascularization of the target vessel

    Time frame: At 1, 6 and 12 months after stent implantation

  22. Any revascularization

    Time frame: At 1, 6 and 12 months after stent implantation

  23. Stent thrombosis according to ARC definitions

    Time frame: Up to 12 months after stent implantation

Sponsors and collaborators

Lead sponsor

Qvanteq AG

Industry

Collaborators

  • Cardialysis BV

Registry information

Important dates

Study start
2014
Primary completion
2016
Study completion
2016
First posted
Jun 27, 2014
Registry last updated
Sep 5, 2016

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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