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TerminatedNCT04696354IGuideUUpdated Oct 1, 2024Results posted

Intravascular Ultrasound-Guided Intervention for Venous Leg Ulcers (IGuideU)

An interventional study of IVUS and Continued Compression Therapy/Stockings in Venous Ulcer of Leg, sponsored by Philips Clinical & Medical Affairs Global. Terminated at 17 sites in 5 countries. Open to participants aged 18 Years to 85 Years. Per ClinicalTrials.gov, last updated 2024-10-01.

Sponsored by Philips Clinical & Medical Affairs Global (part of Philips) · Not applicable, Interventional, and Diagnostic

Why this study was terminated
The study was stopped due to ongoing enrollment challenges.
Phase
Not applicable
Study type
Interventional
Enrollment
12
Allocation
Randomized
Ages
18 Years to 85 Years
Sex
All
01

Study summary

This clinical study is a global, prospective, multi-center, randomized controlled trial to determine if the use of intravascular ultrasound (IVUS) as an adjunctive imaging modality and as an interventional treatment guide will result in a more accurate diagnosis of deep vein occlusion (DVO), will guide optimal therapy, and will provide better clinical outcomes with reduced cost of care for patients presenting with persistent venous leg ulcers (VLUs).

Read the detailed description

This study will be conducted in 266 subjects presenting with venous ulcers that have previously undergone treatment for superficial of and/or perforator venous disease, if clinically indicated, followed by at least 3 months of prescribed compression therapy prior to screening.

There are 6 study visits for each subject that will be completed over a period lasting approximately 24 months. Subjects will undergo a baseline/screening assessment (visit 1) followed by an interrogation procedure (visit 2) if the subject is enrolled into the interrogation arm. If the subject is randomized to the deferred interrogation arm, he/she will have a hospital/office visit in lieu of the interrogation procedure, which will be considered visit 2. For statistical purposes, the wound assessment performed at the index procedure/hospital visit will be considered the baseline measurement. 30±14 days and 90±14 days after Visit 2, the subject will return to the office for a 1- and 3-month follow-up visit, respectively. The subjects will return at 6- and 12-months post-index procedure/Visit 2 for follow-up assessments. The follow-up period for this study will be approximately 24 months, with a phone call only at 24-months post-index procedure/visit 2.

The clinical study has a planned enrollment period of 36 months and a planned study duration period of 5.17 years

02

Conditions studied

  • Venous Ulcer of Leg

Keywords

  • VLU
  • venous leg ulcer
  • ulcer
  • venous leg wound
  • venous stenting
  • IVUS
  • DVO
03

In context

Varicose Ulcer

384 studies on the registry are indexed under Varicose Ulcer; 80 are open to participants now.

This study's enrollment of 12 is below the median of 64 across 329 interventional studies indexed under Varicose Ulcer.

Browse Varicose Ulcer studies →

Lead sponsor

Philips Clinical & Medical Affairs Global is the lead sponsor of 84 studies on the registry; 24 are open to participants now.

Of its 14 completed or terminated interventional studies of FDA-regulated products, 11 (79%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 85 Years
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

  • Be between 18 and 85 years of age.
  • Able and willing to participate and comply with the protocol, including the defined follow-up schedule, by signing an Institutional Review Board (IRB) or Ethics Committee approved informed consent form.
  • Active venous leg ulcer (CEAP C6).
  • Previously completed treatment for clinically significant reflux in the superficial and/or perforator venous system of the target limb at least 3 months prior to enrollment, if clinically indicated.
  • Completed at least 3 months of prescribed compression therapy after any ablation.
  • Palpable dorsalis pedis or posterior tibial artery (DP/PT) pulses at ipsilateral foot or ankle brachial index (ABI) ≥0.8.
  • Be able to ambulate unassisted or with non-motorized assistive devices.
  • Current VLU present ≤48 months.

Exclusion criteria

Exclusion Criteria:

  • Patient is known pregnant or breast-feeding or planning to become pregnant in the following year.
  • If antiplatelet and anticoagulation therapy cannot be tolerated.
  • Previous venous stent implantation involving the target limb, target lesion, or inferior vena cava.
  • Previous venovenous bypass surgery involving the target limb.
  • Previous endovascular recanalization of the target lesion segment.
  • Known metal allergy precluding stent implantation.
  • Known or suspected to have inadequate inflow to support stent patency in the target limb.
  • Active cancer diagnosis.
  • Known positive test for COVID-19 (Sars-CoV-2) within the last 2 weeks and actively symptomatic.
  • Known or suspected venous outflow obstruction caused by tumor compression/encasement with or without thrombus.
  • Known allergy to contrast media that cannot adequately be pre-medicated prior to study procedure.
  • Known renal dysfunction (defined as eGFR \<30mL/min/1.73m2) that would preclude adequate contrast usage.
  • Diagnosed with right heart failure/pulmonary hypertension.
  • Has known clinically significant abnormal platelet count outside laboratory reference ranges.
  • Has known clinically significant abnormal white blood cell count (WBC), fever, sepsis or positive blood culture.
  • Organ transplant requiring immunosuppressant therapy.
  • Unstable angina pectoris, or myocardial infarction within 30 days and/or hemorrhagic stroke within 3 months.
  • Subjects with an active diagnosis of osteomyelitis of the ipsilateral limb.
  • Previous or planned surgical or catheter-based procedure on index leg within 30 days before or 30 days after the index procedure.
  • Active participation in another investigational drug or device study.
  • Subject has any condition, which, in the opinion of the investigator, precludes the subject from participation.
05

Study design

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

Study arms

  • Other
    Interrogation Arm

    patients will first be evaluated with MPV (limited to 3 views). The prescribed course of treatment based on the MPV results will be documented and patients will then be evaluated using IVUS. A treatment plan based on IVUS results will be compared with the MPV guided treatment plan and any differences will be documented. Any patients determined to still require venous stenting based on IVUS results will be stented accordingly using IVUS to guide stent placement.

    Diagnostic Test: IVUS

  • Other
    Deferred Interrogation Arm

    Deferred Interrogation Guidelines for this study are as follows: Mandate: • Continued compression therapy/stockings as prescribed. Allow: * Periodic leg elevation. * Sclerotherapy under ulcer bed. * Recommend mechanical debridement as needed. * Wound biopsy if evidence of infection. * Systemic antibiotics if patient is diagnosed with an infection, avoid prophylactic prescription. * Pain management medication (Pentoxifylline/Trental) allowed but not recommended * Topical antimicrobial as needed. Prohibit: * Negative pressure systems. * Artificial and/or autologous skin grafting within first 3 months after randomization and within the first 3 months for subjects that crossover from deferred interrogation to the interrogation arm.

    Other: Continued Compression Therapy/Stockings

Interventions

  • Diagnostic testIVUS

    Those who are randomized to the interrogation arm will have diagnostic imaging performed by IVUS to determine their treatment plan.

  • OtherContinued Compression Therapy/Stockings

    Those who are randomized to the deferred interrogation arm while continue compression therapy as prescribed.

06

What researchers measure

Primary outcomes

  1. Rate of Detection and Difference in Complete Ulcer Healing Between the Interrogation Group and the Deferred Interrogation Group

    Rate of detection and difference in complete ulcer healing between the interrogation group and the deferred interrogation group at 3 months. Complete ulcer healing is defined by 100% epithelialization of the venous ulcer. Healing will not be assumed for any area of the wound where a scab is present.

    Time frame: 3 months

07

Results

Posted Oct 1, 2024
Limitations and caveats
This study was terminated due to slow enrollment, only 12 of 266 subjects have been enrolled. Because enrollment in this clinical trial did not reach the target number of subjects needed to achieve target power, no data was collected. No statistical analysis information will be submitted for the outcome measures.

Participant flow

No analysis performed. Study was terminated due to slow enrollment. Only 12 enrollments of the required 266 subjects.

Participant flow — Overall Study
MilestoneInterrogation ArmDeferred Interrogation Arm
Started66
Completed00
Not completed66
Withdrew: Study termination66

Outcome measures

PrimaryRate of Detection and Difference in Complete Ulcer Healing Between the Interrogation Group and the Deferred Interrogation Group

Rate of detection and difference in complete ulcer healing between the interrogation group and the deferred interrogation group at 3 months. Complete ulcer healing is defined by 100% epithelialization of the venous ulcer. Healing will not be assumed for any area of the wound where a scab is present.

Time frame:
3 months

No measurements were reported for this outcome.

Adverse events

Collected over This study was terminated due to slow enrollment, only 12 of 266 subjects were enrolled. No data was collected for statistical analysis.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Interrogation Arm———
Deferred Interrogation Arm———

Baseline characteristics

No data collected for analysis.

Age, Continuous
Age, Continuous(years)Interrogation ArmDeferred Interrogation ArmTotal
Sex: Female, Male
Sex: Female, Male(Participants)Interrogation ArmDeferred Interrogation ArmTotal
Female000
Male000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Interrogation ArmDeferred Interrogation ArmTotal
American Indian or Alaska Native000
Asian000
Native Hawaiian or Other Pacific Islander000
Black or African American000
White000
More than one race000
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(participants)Interrogation ArmDeferred Interrogation ArmTotal
United States213
United Kingdom448
France101
08

Study locations

17 sites
  • Vascular Care Connecticut
    Darien, Connecticut 06820, United States
  • Florida Cardiology, P.A.
    Winter Park, Florida 32792, United States
  • Northwestern
    Chicago, Illinois 60208, United States
  • Cardiovascular Institute of the South
    Houma, Louisiana 70394, United States
  • Vein Center of Southwest Louisiana
    Lake Charles, Louisiana 70601, United States
  • Englewood Hospital and Medical Center
    Englewood, New Jersey 07631, United States
  • NYU Langone Health
    New York, New York 10016, United States
  • Atrium Health
    Charlotte, North Carolina 28210, United States
  • Wollongong Hospital
    Wollongong, New South Wales 2500, Australia
  • Royal Perth Hospital
    Perth, Western Australia 6000, Australia
  • CHU Strasbourg
    Strasbourg, Alsace 67000, France
  • CH Vichy
    Vichy, Bourbonnais 03200, France
  • C.H.U. Dijon
    Dijon, 77908, France
  • Klinikum Hochsauerland GmbH
    Arnsberg, North Rhine-Westphalia 59755, Germany
  • Northwick Park Hospital
    Harrow, London HA1 3UJ, United Kingdom
  • Royal Free London NHS Foundation Trust
    Hampstead, United Kingdom
  • Guys and St. Thomas' Hospital
    London, United Kingdom
09

References and documents

Study documents

  • Protocol and statistical analysis plan · Jan 13, 2022

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 1, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04696354
Responsible party
Sponsor
First posted
Jan 6, 2021
Start date
Oct 12, 2021
Primary completion
Jan 11, 2023
Completion
Jan 17, 2023
Results posted
Oct 1, 2024
Last update
Oct 1, 2024

Study contacts

Stephen Black, MD
principal investigator · St. Thomas and Guys Hospital
Paul Gagne, MD
principal investigator · Vascular Care CT, PLLC

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Jan 2023. You cannot join it, but the record below documents what was studied.

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