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OpenTrials
Completed

NCT Number: NCT03744572

Prestige Pilot - Phoenix Atherectomy and Stellarex DCB Clinical Investigation in Infrapopliteal Interventions

This pilot study is to investigate if a lesion preparation strategy with Phoenix atherectomy before DCB (drug coated balloon) usage in patients with PAD (peripheral artery disease) Rutherford Stage 4-5 and mild/moderate/severe calcium can improve outcomes including patency and limb salvage and evaluate safety and performance of the combination therapy

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Vascular Center of Klinikum Hochsauerland, Arnsberg, Germany

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Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Patients must be ≥ 18 years of age.
  • Patients are male or, if female, are either not of childbearing potential or must have a negative pregnancy test done within 7 days prior-index procedure and effective contraception must be used during participation in the Clinical Investigation.
  • Patients who are mentally and linguistically able to understand the aim of the Clinical Investigation and to show sufficient compliance in following the Clinical Investigation Plan.
  • Patients must agree to return for all required post-index procedure follow-up visits.
  • Patients are able to verbally acknowledge an understanding of the associated risks, benefits, and treatment alternatives to therapeutic options of the Clinical Investigation. Patients, by providing their informed consent, agree to these risks and benefits as stated in the patient informed consent document.
  • Rutherford Class 4-5
  • ≥ 70% stenosis infrapopliteal lesion by angio visual assessment (later correlated with IVUS)
  • Target vessel(s) reconstitute(s) at or above the ankle with inline flow to at least one patent pedal vessel (includes perforating peroneal branches to dorsalis pedis and plantar artery).
  • The target lesion must either be de-novo or restenotic (stenosis ≥ 70% or occlusion by visual estimate). If the target lesion is restenotic, the prior PTA must have been done > 30 days prior-index procedure.
  • Treatment of multiple target lesions is allowed, as long as the composite target lesion length is ≤ 27 cm and the target lesions can be treated with a maximum of 2 overlapping Investigational Devices.
  • Presence of clearly visible calcification in two views (both sides of vessel at the same location) evaluated angiographically- [OPTIONAL: Computerized tomography (CT) angio images may substitute to confirm distribution of calcium, if available as standard of care]
  • Length of calcium ≥ 25 % of total lesion length or ≥ 2 cm total length by angio visual assessment (later correlated with IVUS)
  • At least one target lesion that is ≥ 2cm in length

Exclusion criteria

  • Patients with a known hypersensitivity or contraindication to aspirin, heparin, clopidogrel, or other anticoagulant/anti-platelet therapies, Paclitaxel (or analogs) or sensitivity to contrast media that cannot be adequately premedicated.
  • Patients with any contraindications as mentioned in the Instructions for Use (IFU) of the Investigational Device.
  • Patients with a life expectancy, from the Investigator's opinion, of less than 2 years.
  • Patients that are currently participating in other clinical investigations involving any investigational drug or device that may potentially confound the results of the Clinical Investigation, or that would limit the patient's compliance with the follow-up requirements of the Clinical Investigation.
  • Patients with a history of Myocardial Infarction (MI), thrombolysis or angina within 30 days prior-index procedure.
  • Patients with a history of major disabling stroke within 3 months prior index procedure.
  • Patients with any type of previous or planned surgical or interventional procedure within 15 days prior- and/or within 30 days post-index procedure.
  • Patients with a presence or history of severe renal failure (Glomerular Filtration Rate (GFR) ≤ 30 ml/min).
  • Patients who have undergone prior vascular surgery of the index limb to treat atherosclerotic disease.
  • Patients with clinically significant aneurysmal disease of the iliac, femoral or popliteal artery and patients with a history of clinically significant abdominal aortic aneurysm.
  • Treatment of the contralateral limb during the same index procedure or within 30 days post-index procedure in order to avoid confounding complications.
  • Target vessel(s) reconstitute(s) below the ankle with no inline flow to at least one patent pedal vessel.
  • Subjects scheduled to undergo a planned major amputation
  • Prior stent placement in the target lesion(s)
  • Unsuccessful guidewire crossing
  • Subintimal guidewire placement (confirmed by IVUS, no subintimal placement is allowed)
  • Persistent inflow disease left untreated or unsuccessfully treated
  • Non ischemic ulcers and/or ulcers at or above the ankle

Treatment and study plan

Primary outcomes

  1. Number of target lesions with patency at 6 months

    Time frame: 6 months

    Patency defined as freedom from occluded target lesions (flow) verified by duplex ultrasound without re-intervention

  2. Composite Safety; Number of patients with freedom from BTK major adverse limb events (MALE) and/or perioperative death (POD)

    Time frame: 30-days

    Freedom from BTK major adverse limb events (MALE) and/or perioperative death (POD)

Secondary outcomes

  1. Number of patients with limb salvage

    Time frame: 6, 12, and 24 months

    Limb salvage is defined as freedom from major amputation

  2. Number of target lesions with patency as indicated by PSVR measurement

    Time frame: 6,12, and 24 months

    Patency defined as freedom from >50% restenosis in the target lesion as indicated by a duplex ultrasound peak systolic velocity ratio (PSVR) < 2.5 or by visual assessment of an angiogram with no clinically driven reintervention

  3. Number of target lesions with secondary patency

    Time frame: 6, 12 and 24 months

    Secondary patency is defined as freedom from occluded target lesions (flow) verified by duplex ultrasound

  4. Number of target lesions with procedural success

    Time frame: at end of percutaneous revascularization index procedure

    Procedural sucess is defined as achievement of a ≤30% Diameter Stenosis (DS) at the end of the procedure without MAEs as determined by angiographic core lab

  5. Number of target lesions with technical success

    Time frame: at end of percutaneous revascularization index procedure

    Technical sucess is defined as achievement of a ≤30% Diameter Stenosis (DS) following Phoenix and DCB as determined by angiographic core lab

  6. Number of target lesions with device success for Phoenix atherectomy

    Time frame: during percutaneous revascularization index procedure post-Phoenix and before DCB treatment

    Device success is defined as achievement of a ≤50% Diameter Stenosis (DS) post-Phoenix without pre-dilatation and before DCB or any adjunctive therapy as determined by angiographic core lab

  7. Wound, Ischemia, foot Infection (WIfI) Classification on target limb

    Time frame: 1, 6,12 and 24 months

  8. Ankle-Brachial Index (ABI)

    Time frame: 1, 6,12 and 24 months

  9. Clinical success at follow-up,

    Time frame: 1, 6, 12 or 24 months

    improvement of at least one Rutherford class compared to the pre-procedure Rutherford classification

  10. Pain rating scale scores compared to Baseline

    Time frame: 1, 6, 12 or 24 months

    Pain in the legs during the last 24 h rated on a numerical scale from 0 (no pain) to 10 (worst possible pain)

  11. Walking Impairment Questionnaire (WIQ) score compared to Baseline

    Time frame: 1, 6, 12 or 24 months

    The total WIQ score is defined as sum of five subscores. A subscore is calculated as sum of a scale for each of five separate domains.

  12. Percentage of complete wound healing (complete epithelialization)

    Time frame: 1, 6, 12 or 24 months

  13. correlation between IVUS metrics and angiographic core lab assessment

    Time frame: pre- and at end of percutaneous revascularization index procedure

    Core lab assessed correlation between IVUS metrics of true luminal diameter, actual % area stenosis, change in plaque area and luminal gain pre- and post-therapy, plaque shape and angiographic core lab assessment of pre- and post-percent diameter stenosis (%DS) and the extent of vascular calcification will be determined

  14. Number of patients without Major Adverse Event (MAE)

    Time frame: 6, 12, or 24 months

    MAEs defined as clinically-driven target lesion revascularization, major amputation of the treated limb, and all-cause death

Sponsors and collaborators

Lead sponsor

Michael Lichtenberg, MD

Other

Registry information

Important dates

Study start
2018
Primary completion
2020
Study completion
2022
First posted
Nov 16, 2018
Registry last updated
Jan 26, 2023

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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