ClinicalTrials.gg
CompletedNCT02561299OPTIMIZE BTKUpdated Jul 18, 2023Results posted

Orbital Vessel PreparaTIon to MaximIZe Dcb Efficacy in Calcified Below the Knee (BTK) Lesions - A Pilot Study

An interventional study of Peripheral Orbital Atherectomy System and 014 Drug Coated Balloon in PAD and Vascular Calcification, sponsored by Abbott Medical Devices. Completed at 7 sites in 2 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-07-18.

Sponsored by Abbott Medical Devices (part of Abbott) · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
66
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to prospectively evaluate acute and long term clinical results of orbital atherectomy (OA) with adjunctive drug coated balloon (DCB) angioplasty versus DCB angioplasty alone for treatment of Peripheral Artery Disease (PAD) in below the knee (BTK) lesions.

02

Conditions studied

  • PAD
  • Vascular Calcification

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Keywords

  • Drug-coated Balloons
  • Calcified Lesions
  • Orbital Atherectomy
  • Below the Knee
  • Paclitaxel
  • Lutonix 014 Drug-coated Balloon
03

In context

Vascular Calcification

82 studies on the registry are indexed under Vascular Calcification; 17 are open to participants now.

This study's enrollment of 66 is close to the median of 64 across 56 interventional studies indexed under Vascular Calcification.

Browse Vascular Calcification studies →

Lead sponsor

Abbott Medical Devices is the lead sponsor of 539 studies on the registry; 33 are open to participants now.

Of its 53 completed or terminated interventional studies of FDA-regulated products, 44 (83%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Subject's age ≥ 18 years
  • Rutherford Clinical Category 3 - 5
  • Lesions [except in-stent restenosis (ISR)] of the distal popliteal (POP segment below the anatomical knee joint), anterior tibial, posterior tibial, tibial peroneal trunk, and peroneal arteries with ≥ 70 % diameter stenosis (DS) by angiography
  • Presence of clearly visible calcification in two views (both sides of vessel at the same location) evaluated angiographically- [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
  • Target lesion length up to 20 cm

Exclusion criteria

Exclusion Criteria:

  • Subject or subject's legal representative is not willing to sign an Ethics Committee approved form or comply with the study protocol requirements
  • by either device, per Instructions For Use
  • Presence of inflow lesion (≥ 50 % DS) or inflow not successfully treated (≥ 50% DS and/or unresolved significant angiographic complication)
  • Compromised outflow distal to the target lesion (≥ 70 % DS) or presence of lesion(s) or occlusion(s) located from 5 cm above the ankle to below the ankle joint space
  • Subject has more than 2 target vessels requiring treatment
  • The guide wire cannot be passed across the target lesion(s) and/or guide wire position distal to target lesion(s) outside vessel lumen
  • Presence of significant (≥ 70 % DS) lesion(s) or occlusion(s) not meeting the study criteria which were not successfully treated during the index procedure (≥ 50 % DS and/or significant angiographic complication)
  • Subject has planned amputation (including minor) of the index limb or previous major amputation of the contralateral limb
  • Creatinine > 2.5 mg/dL, unless on dialysis
  • Subject has any significant medical condition which, in the Investigator's opinion, may interfere with the subject's optimal participation in the study
  • Subject is participating in an drug or device study that has the potential to clinically interfere with the study outcome measures
  • Subject is pregnant or planning to become pregnant within the study period
  • Subject has an unresolved severe systemic infection
  • Subject has an anticipated life span of less than one year
  • Subjects with known to paclitaxel or paclitaxel related compounds
  • Subjects who cannot receive recommended anti- and/or anticoagulant therapy
  • Pre-dilatation of the target lesion prior to randomization and OA treatment
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
66 participants (actual)

Study arms

  • Experimental
    OA with adjunctive DCB angioplasty

    Lesion preparation with Peripheral Orbital Atherectomy System followed by drug-coated balloon angioplasty

    Device: Peripheral Orbital Atherectomy System · Device: 014 Drug Coated Balloon

  • Active comparator
    DCB angioplasty

    014 Drug Coated Balloon angioplasty

    Device: 014 Drug Coated Balloon

Interventions

  • DevicePeripheral Orbital Atherectomy System

    Orbital Atherectomy

  • Device014 Drug Coated Balloon

    Drug Coated Balloon

06

What researchers measure

Primary outcomes

  1. Device Success

    Device success was defined as the ability to achieve successful delivery and deployment of the drug-coated balloon (DCB) to the target lesion as described per Instructions for Use (IFU) within 3 minutes of insertion without removal and use of an additional device. The percentage of success was based on the number of DCB devices used.

    Time frame: During the procedure

  2. Patency of the Target Lesion at 6 Months and 12 Months Post-Procedure

    Patency of the target lesion as reported by the Duplex Ultrasound (DUS) Core Laboratory. Vessel patency at 6 months and 12 months by Duplex Ultrasound (DUS), where patency is defined as \<50% restenosis within the treated lesion area. Patency was assessed by the DUS Core Laboratory.

    Time frame: 6 months and 12 months post-procedure

  3. Freedom From Clinically-Driven Target Lesion Revascularization (CD-TLR) at 6 Months and 12 Months Post-Procedure

    A Kaplan-Meier analysis was performed to determine the percent probability that a study participant was free from CD-TLR through 6 months and 12 months.

    Time frame: 6 months and 12 months post-procedure

  4. Freedom From Unplanned, Unavoidable Major Amputation of the Index Limb at 6 Months and 12 Months Post-Procedure

    A Kaplan-Meier analysis was performed to determine the percent probability that the study participant was free from an unplanned, unavoidable major amputation of the index limb through 6 months and 12 months.

    Time frame: 6 months and 12 months post-procedure

  5. Freedom From Major Adverse Events (MAEs) at 6 Months and 12 Months Post-Procedure

    A Kaplan-Meier analysis was performed to determine the percent probability that the study participant was free from a major adverse event (MAE) through 6 months and 12 months. Major adverse events were defined as: clinically-driven target lesion revascularization (CD-TLR); unplanned, unavoidable major amputation of the index limb; and death within 30 days of the index procedure.

    Time frame: 6 months and 12 months post-procedure

  6. Change in Rutherford Category at 6 Months and 12 Months Post-Procedure

    Rutherford Classification (RC) is a commonly used clinical grading system for describing peripheral arterial disease (PAD) on a scale of 0 to 6. RC 6 is the most severe form of PAD. There are seven Rutherford categories used to grade the severity of peripheral artery disease; 0: asymptomatic, 1: mild claudication, 2: moderate claudication, 3: severe claudication, 4: ischemic rest pain, 5: minor tissue loss, 6: major tissue loss. The change in Rutherford category is presented as the distribution at baseline compared to that at 6- and 12-months post-procedure.

    Time frame: Baseline, 6 months and 12 months post-procedure

07

Results

Posted Sep 16, 2021

Participant flow

Participant flow — Overall Study
MilestoneOA With Adjunctive DCB AngioplastyDCB Angioplasty
Started3234
Completed2728
Not completed56
Withdrew: Death24
Withdrew: Lost to follow-up10
Withdrew: Withdrawal by subject22

Outcome measures

PrimaryDevice Success

Device success was defined as the ability to achieve successful delivery and deployment of the drug-coated balloon (DCB) to the target lesion as described per Instructions for Use (IFU) within 3 minutes of insertion without removal and use of an additional device. The percentage of success was based on the number of DCB devices used.

Time frame:
During the procedure
Reported as:
Count of units · Drug Coated Balloons
Device Success
Drug Coated BalloonsOA With Adjunctive DCB AngioplastyDCB Angioplasty
Device Success4239
PrimaryPatency of the Target Lesion at 6 Months and 12 Months Post-Procedure

Patency of the target lesion as reported by the Duplex Ultrasound (DUS) Core Laboratory. Vessel patency at 6 months and 12 months by Duplex Ultrasound (DUS), where patency is defined as \<50% restenosis within the treated lesion area. Patency was assessed by the DUS Core Laboratory.

Time frame:
6 months and 12 months post-procedure
Reported as:
Count of units · Lesions
Patency of the Target Lesion at 6 Months and 12 Months Post-Procedure
LesionsOA With Adjunctive DCB AngioplastyDCB Angioplasty
Patency at 6 months155
Patency at 12 months156
PrimaryFreedom From Clinically-Driven Target Lesion Revascularization (CD-TLR) at 6 Months and 12 Months Post-Procedure

A Kaplan-Meier analysis was performed to determine the percent probability that a study participant was free from CD-TLR through 6 months and 12 months.

Time frame:
6 months and 12 months post-procedure
Reported as:
Number · % probability
Freedom From Clinically-Driven Target Lesion Revascularization (CD-TLR) at 6 Months and 12 Months Post-Procedure
% probabilityOA With Adjunctive DCB AngioplastyDCB Angioplasty
Freedom from CD-TLR at 6 months96.8 (90.6 to 103.0)94.1 (86.2 to 102.0)
Freedom from CD-TLR at 12 months86.4 (74.0 to 98.8)91.0 (81.2 to 100.7)
PrimaryFreedom From Unplanned, Unavoidable Major Amputation of the Index Limb at 6 Months and 12 Months Post-Procedure

A Kaplan-Meier analysis was performed to determine the percent probability that the study participant was free from an unplanned, unavoidable major amputation of the index limb through 6 months and 12 months.

Time frame:
6 months and 12 months post-procedure
Reported as:
Number · % probability
Freedom From Unplanned, Unavoidable Major Amputation of the Index Limb at 6 Months and 12 Months Post-Procedure
% probabilityOA With Adjunctive DCB AngioplastyDCB Angioplasty
Freedom from major amputation at 6 months100.0 (100.0 to 100.0)100.0 (100.0 to 100.0)
Freedom from major amputation at 12 months96.6 (89.9 to 103.2)100.0 (100.0 to 100.0)
PrimaryFreedom From Major Adverse Events (MAEs) at 6 Months and 12 Months Post-Procedure

A Kaplan-Meier analysis was performed to determine the percent probability that the study participant was free from a major adverse event (MAE) through 6 months and 12 months. Major adverse events were defined as: clinically-driven target lesion revascularization (CD-TLR); unplanned, unavoidable major amputation of the index limb; and death within 30 days of the index procedure.

Time frame:
6 months and 12 months post-procedure
Reported as:
Number · % probability
Freedom From Major Adverse Events (MAEs) at 6 Months and 12 Months Post-Procedure
% probabilityOA With Adjunctive DCB AngioplastyDCB Angioplasty
Freedom from MAE at 6 months90.6 (80.5 to 100.7)91.2 (81.6 to 100.7)
Freedom from MAE at 12 months77.7 (63.1 to 92.3)85.3 (73.4 to 97.2)
PrimaryChange in Rutherford Category at 6 Months and 12 Months Post-Procedure

Rutherford Classification (RC) is a commonly used clinical grading system for describing peripheral arterial disease (PAD) on a scale of 0 to 6. RC 6 is the most severe form of PAD. There are seven Rutherford categories used to grade the severity of peripheral artery disease; 0: asymptomatic, 1: mild claudication, 2: moderate claudication, 3: severe claudication, 4: ischemic rest pain, 5: minor tissue loss, 6: major tissue loss. The change in Rutherford category is presented as the distribution at baseline compared to that at 6- and 12-months post-procedure.

Time frame:
Baseline, 6 months and 12 months post-procedure
Reported as:
Count of participants · Participants
Change in Rutherford Category at 6 Months and 12 Months Post-Procedure
ParticipantsOA With Adjunctive DCB AngioplastyDCB Angioplasty
Baseline — Rutherford Category 000
Baseline — Rutherford Category 100
Baseline — Rutherford Category 200
Baseline — Rutherford Category 3108
Baseline — Rutherford Category 424
Baseline — Rutherford Category 52022
Baseline — Rutherford Category 600
6 months — Rutherford Category 067
6 months — Rutherford Category 151
6 months — Rutherford Category 220
6 months — Rutherford Category 311
6 months — Rutherford Category 400
6 months — Rutherford Category 588
6 months — Rutherford Category 600
12 months — Rutherford Category 0108
12 months — Rutherford Category 133
12 months — Rutherford Category 221
12 months — Rutherford Category 341
12 months — Rutherford Category 400
12 months — Rutherford Category 555
12 months — Rutherford Category 600

Adverse events

Collected over Adverse events were collected from the time of randomization through subject trial completion, up to 24 months.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
OA With Adjunctive DCB Angioplasty2/32 (6.3%)29/32 (90.6%)4/32 (12.5%)
DCB Angioplasty4/34 (11.8%)22/34 (64.7%)2/34 (5.9%)
Most frequent serious events
Showing 10 of 54
Most frequent serious events
EventOA With Adjunctive DCB AngioplastyDCB Angioplasty
New/Worsening InfectionVascular disorders10/325/34
New/Worsening WoundVascular disorders8/328/34
Peripheral Artery StenosisVascular disorders5/328/34
New/Worsening PainVascular disorders6/322/34
Peripheral Artery RestenosisVascular disorders4/326/34
Cardiac Dysfunction-Chronic Heart Failure or AggravatedCardiac disorders2/325/34
Myocardial InfarctionCardiac disorders4/320/34
StrokeNervous system disorders4/320/34
Injury/TraumaGeneral disorders3/324/34
Urinary Tract Infection (UTI)Renal and urinary disorders3/321/34
Most frequent other events
Most frequent other events
EventOA With Adjunctive DCB AngioplastyDCB Angioplasty
Peripheral Artery PerforationInjury, poisoning and procedural complications2/320/34
Peripheral Artery Thrombus/ThrombosisInjury, poisoning and procedural complications2/320/34
Blood and Lymphatic System Disorder-AnemiaGeneral disorders0/322/34

Baseline characteristics

Age, Continuous
Age, Continuous(years)OA With Adjunctive DCB AngioplastyDCB AngioplastyTotal
Mean73.4 ± 8.576.5 ± 7.175.0 ± 7.9
Sex: Female, Male
Sex: Female, Male(Participants)OA With Adjunctive DCB AngioplastyDCB AngioplastyTotal
Female6915
Male262551
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)OA With Adjunctive DCB AngioplastyDCB AngioplastyTotal
Count of participants——0
Rutherford Clinical Category
Rutherford Clinical Category(Participants)OA With Adjunctive DCB AngioplastyDCB AngioplastyTotal
Severe Claudication (3)10818
Ischemic Rest Pain (4)246
Minor Tissue Loss (5)202242
08

Study locations

7 sites
  • Medical University of Graz
    Graz, Austria
  • Vascular Clinic - Hanusch Hospital
    Wien, Austria
  • Universitäts-Herzzentrum Freiburg - Bad Krozingen
    Bad Krozingen, Germany
  • Fürst-Strium-Klinik Bruchsal
    Bruchsal, Germany
  • SRH Klinikum Karlsbad- Langensteinbach GmbH
    Langensteinbach, Germany
  • Universität Leipzig
    Leipzig, Germany
  • Romed Klinikum Rosenheim
    Rosenheim, Germany
09

References and documents

Publications

  • Zeller T, Giannopoulos S, Brodmann M, Werner M, Andrassy M, Schmidt A, Blessing E, Tepe G, Armstrong EJ. Orbital Atherectomy Prior to Drug-Coated Balloon Angioplasty in Calcified Infrapopliteal Lesions: A Randomized, Multicenter Pilot Study. J Endovasc Ther. 2022 Dec;29(6):874-884. doi: 10.1177/15266028211070968. Epub 2022 Jan 27. PubMed 35086385 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Sep 2015 to primary completion in Jul 2019, 46 months.

Results were first posted in Sep 2021, 2 years 2 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 26, 2015
First posted
Sep 28, 2015
StartActual
Sep 2015
Primary completionActual
Jul 2, 2019
CompletionActual
Jul 2, 2019
Results first posted
Sep 16, 2021
Last update
Jul 18, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 18, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02561299
Responsible party
Sponsor
First posted
Sep 28, 2015
Start date
Sep 2015
Primary completion
Jul 2, 2019
Completion
Jul 2, 2019
Results posted
Sep 16, 2021
Last update
Jul 18, 2023

Study contacts

Professor Marianne Brodmann, Dr.
principal investigator · Medical University of Graz, Austria
Professor Gunnar Tepe, Dr.
principal investigator · Klinikum Rosenheim Germany
Professor Thomas Zeller, Dr.
principal investigator · Herz-Zentrum Bad Krozingen Germany

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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