DCB for Dialysis Access Stent Graft Restenosis

November 27, 2017 updated by: IRB of NTUH Hsin-Chu Branch, National Taiwan University Hospital Hsin-Chu Branch

A Randomized Trial Comparing Drug-coated Balloon and Regular Balloon for Dialysis Access Stent Graft Restenosis

Recurrent stenosis in hemodialysis access graft (AVG) is difficult to treat. For recurrent stenosis in the anastomotic junction can be treated by stent graft to improve long-term patency. However, there is no data regarding treatment of stent graft restenosis in AVG. This randomized trial is designed to compare the efficacy and safety of drug-coated balloon (DCB) versus regular balloon in AVG stent graft restenosis.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Prosthetic arteriovenous hemodialysis access graft (AVG) has high incidences of venous anastomotic stenosis and access failure. A stent graft can be used in AVG with recurrent venous anastomotic stenosis to improve long-term patency rate. However, after stent graft implementation, the effective treatment for restenosis in a stent graft is still unknown. This randomized trial is designed to evaluate the efficacy and safety of drug-coated balloon versus regular balloon for in-stent restenosis in stent graft. The investigators plan to enroll 40 patients who presented with prosthetic AVG in-stent restenosis, and then to evaluate the restenosis lesions by intravascular ultrasound. Patients will be randomized into two groups of treatment: drug-coated balloon angioplasty or regular balloon angioplasty.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
40

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Taiwan
    • Hsinchu City
      • Hsinchu, Hsinchu City, Taiwan, 300
        • Recruiting
        • National Taiwan University Hospital HsinChu Branch
        • Contact:
        • Contact:
        • Sub-Investigator:
          • Min-Tsun Liao, MD
        • Sub-Investigator:
          • Mu-Yang Hsieh, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

20 years to 90 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Age of 20 to 90 years on regular hemodialysis at least 3 months
  • Had stent graft implemented at dialysis vascular access
  • Angiographic evidence of stenosis within the stent graft or less than 2 cm from the stent graft edge
  • Clinical evidence of a hemodynamically significant stenosis or thrombosis
  • Patient is able to provide written informed consent

Exclusion Criteria:

  • Elbow fracture or any disease involve the elbow joint that prohibits the flexion maneuver.
  • Target lesion cannot be crossed by the guide wire.
  • Known hypersensitivity to heparin or contrast medium.
  • Bleeding diathesis.
  • Patients participating in another clinical trial with interfering with this trial in the past three months.
  • Untreatable bleeding diathesis.
  • Other diseases, such as cancer, liver disease, or cardiac insufficiency, which may lead to protocol violations or markedly shorten a patient's life expectancy (less than 3 months).
  • Patients unable or unwilling to participate this trial.
  • Pregnancy, lactating woman, non-adult, criminals in sentence, psychiatric patients, research staffs or colleagues are prohibited.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Regular balloon
Use the regular balloon to perform standard balloon angioplasty.
Device: Regular balloon
Randomization: to use regular balloon to treat stent graft restenosis
Active Comparator: DCB (paclitaxel-coated balloon)
Use DCB (paclitaxel-coated balloon) to perform additional balloon angioplasty.
Device: DCB (paclitaxel-coated balloon)
Randomization: to use DCB (paclitaxel-coated balloon, Ranger, Boston-Scientific) to treat stent graft restenosis. The paclitaxel dose is 2 ug/mm2 delivered with the Ranger drug-coated balloon.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Late luminal loss
Time Frame: 0, 1, and 3 months
The late luminal loss found by IVUS on follow-up in comparison to index procedure.
0, 1, and 3 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
minimal luminal area and diameter
Time Frame: 0, 1, and 3 months
Done by IVUS on follow-up in comparison to index procedure.
0, 1, and 3 months
restenosis rate
Time Frame: 0, 1, and 3 months
Compare with follow-up angiography.
0, 1, and 3 months
repeated intervention
Time Frame: 0, 1, and 3 months
defined by repeated endovascular balloon angioplasty or endovascular thrombectomy or surgical open thrombectomy.
0, 1, and 3 months
abandon of AV graft, death
Time Frame: 0, 1, and 3 months
stopped to use the target AVG or mortality
0, 1, and 3 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
National Taiwan University Hospital Hsin-Chu Branch

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Mu-Yang Hsieh, MD, National Taiwan University Hospital Hsin-Chu Branch

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 5, 2017

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2019

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2019

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 12, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 27, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 4, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 4, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 27, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 105-015-F

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Undecided

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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