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End Stage Kidney Disease (ESRD)AMPLIFI-1NCT07211035

Effect of the Amplifi™ Vein Dilation System on Outflow Vein Dilation and AV Fistula Maturation (AMPLIFI-1)

A study of End Stage Kidney Disease (ESRD), run by Amplifi Vascular, Inc. at 2 sites in United States.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

The AMPLIFI-1 Study is a prospective, multicenter pivotal clinical trial designed to evaluate the safety and effectiveness of the Amplifi™ Vein Dilation System in patients requiring distal arteriovenous fistula (AVF) creation for hemodialysis. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
End Stage Kidney Disease (ESRD)
Could I receive a placebo?
No, everyone receives an active treatment
How many people
160 participants
Where
2 sitesUnited States
Study dates
12 May 2026to 1 Dec 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age ≥ 18 years
  • Indicated for wrist or distal forearm radiocephalic AVF creation based on Investigator's standard practice
  • End-Stage Renal Disease (ESRD) receiving maintenance hemodialysis.
  • Baseline cephalic vein diameter between >1.7 mm and <3.2 mm at the proposed Study AVF creation site in the distal forearm, with a continuous distal segment or tributary suitable for Amplifi System Outflow Catheter placement, including:
  • A forearm cephalic vein segment of ≥ 14 cm in length that provides an approximately 10 cm cannulation zone, free of detectable occlusions or stenosis, with collaterals.
  • Central continuity of the forearm cephalic vein at the elbow demonstrated through one or any combination of the following pathways:
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  • the upper arm cephalic vein,
  • the median cubital vein connecting to the upper arm basilic vein,
  • the perforator vein connecting to the deep venous system.
  • Upper arm veins must show central continuity with no detectable occlusions.
  • Palpable radial artery with a diameter of ≥ 2.0 mm at the site of proposed AVF creation without significant stenosis along the course
  • Positive Allen's Test
  • At least one patent internal jugular vein suitable for Amplifi Inflow Catheter insertion
  • Subject has voluntarily signed written informed consent

Who cannot join

  • Known allergy to Amplifi System components (polyurethane, nitinol), iodinated contrast agents, heparin, or apixaban
  • Known or suspected active infection at the proposed time of Amplifi System placement
  • Known bleeding diathesis, including from uncorrected coagulopathy
  • Known thrombophilia, requiring treatment
  • Hb <7 gm/dL
  • Platelet level < 100,000 /mm3
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  • Significant radial artery calcification
  • Need for continued treatment with anti-platelet agents or other anticoagulants (other than apixaban) during the Amplifi System treatment period
  • Known history of patent foramen ovale > 2 mm
  • History of recent intracranial or gastrointestinal bleeding
  • Documented recent central venous or right atrial thrombus
  • Known presence or recent history of intracranial or gastrointestinal bleeding or presence of underlying conditions that would predispose to intracranial or internal bleeding. Documented recent central venous or right atrial thrombus
  • History of recent ipsilateral central venous occlusion, stenosis > 50%, angioplasty, or stent placement
  • Pregnancy, lactation, or plans to become pregnant during the Study
  • Expected survival less than 12 months
  • Unwillingness or inability to comply with procedures specified in the Protocol, or difficulty or inability to return for follow-up visits as specified by the Protocol
  • Participation in any other investigational drug or medical device study that has not completed primary endpoint evaluation or clinically interferes with the endpoints from the Study, or planned future participation in such studies prior to the completion of the Study

Trial locations and contacts

2 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Erdie De Peralta Vice President, Regulatory and Clinical Affairs, Master of Arts contact

19784080949

edeperalta@amplifivascular.com

United States2 sites, 2 recruiting
  • Brigham Women's Hospital

    Boston, Massachusetts, 02115

    Hussain, Mohamad A MD, PhD

    Mohamad Hussain, MD, PhD

    Recruiting
  • Flow Vascular

    Houston, Texas, 77091

    Karl Illig, MD

    Karl Illig, MD

    Recruiting

Other trials in United States

About this study

Official title: A Pivotal Study to Evaluate the Effect of the Amplifi™ Vein Dilation System on Outflow Vein Dilation and Arteriovenous Fistula Maturation

The AMPLIFI-1 Study is a prospective, multicenter pivotal clinical trial designed to evaluate the safety and effectiveness of the Amplifi™ Vein Dilation System in patients requiring distal arteriovenous fistula (AVF) creation for hemodialysis. The study has two cohorts: a randomized controlled (RC) cohort of patients with suitable cephalic veins (≥2.5 mm) randomized 2:1 to Amplifi treatment plus AVF creation versus standard AVF creation alone, and a non-randomized small vein cohort (NRC) of patients with borderline veins (1.7 to <2.5 mm) treated with Amplifi therapy followed by AVF creation.

Read the detailed description

AMPLIFI-1 is a staged, multicenter clinical investigation evaluating the safety and effectiveness of the Amplifi™ Vein Dilation System in patients with end-stage renal disease (ESRD) undergoing distal arteriovenous fistula (AVF) creation. The system provides controlled, continuous extracorporeal blood flow to the cephalic vein over 24 to 72 hours, inducing flow-mediated dilation prior to surgery.

The study includes two cohorts based on baseline cephalic vein diameter:

Randomized Controlled (RC) Cohort: Subjects with vein diameter ≥2.5 mm are randomized 2:1 to receive either Amplifi therapy followed by AVF creation or AVF creation alone. This cohort supports the primary effectiveness endpoint and provides the control group reference.

Non-Randomized Cohort (NRC): Subjects with borderline cephalic veins (1.7 mm to <2.5 mm) are treated with Amplifi therapy followed by AVF creation. Effectiveness is evaluated against a performance goal informed by the RC control group and external benchmarks.

The primary endpoint is physiologic AVF maturation at 2 weeks post-creation, defined as brachial artery flow ≥500 mL/min and outflow vein diameter ≥5 mm on duplex ultrasound. Secondary endpoints include functional maturation, AVF patency, and early safety events.

The study uses a staged approach beginning with a 5-subject initial safety cohort. All procedures follow a standardized AVF surgical and imaging protocol. The trial includes centralized core lab review of imaging and adverse event adjudication. Data from both cohorts will be analyzed separately and pooled to support a proposed indication spanning the studied vein size range.

Being tested
The Amplifi System is a temporary extracorporeal blood pump designed to deliver controlled flow through a peripheral vein for 24-72 hours prior to AVF creation., Standard of Care (AVF creation)
Keywords
Pre-vein dilation for AVF access
Medical subject headings
Kidney Failure, Chronic

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • The Amplifi System is a temporary extracorporeal blood pump designed to deliver controlled flow through a peripheral vein for 24-72 hours prior to AVF creation.Device

    The Amplifi System is a temporary extracorporeal blood pump designed to deliver controlled flow through a peripheral vein for 24-72 hours prior to AVF creation. By increasing wall shear stress, the device promotes physiologic vein dilation, enabling successful creation of a distal radiocephalic arteriovenous fistula (AVF) in patients with small or borderline veins.

  • Standard of Care (AVF creation)Procedure or surgery

    Standard of Care AVF creation

Study groups in NCT07211035
Study groupRoleWhat they receive
Arm 1: Amplifi + AVF (Randomized Cohort) Subjects with suitable veins (≥2.5 mm)ExperimentalSubjects with suitable veins (≥2.5 mm) randomized 2:1 to Amplifi treatment followed by surgical creation of a distal radiocephalic arteriovenous fistula (AVF).
Receives: Device: The Amplifi System is a temporary extracorporeal blood pump designed to deliver controlled flow through a peripheral vein for 24-72 hours prior to AVF creation.
Arm 2: Active Comparator - Control AVF (Randomized Cohort)Active comparatorSubjects with suitable veins (≥2.5 mm) randomized to control group, undergoing standard surgical creation of a distal radiocephalic AVF without Amplifi pretreatment.
Receives: Procedure: Standard of Care (AVF creation)
Arm 3: Experimental - Amplifi + AVF (Non-Randomized Small Vein Cohort)ExperimentalSubjects with borderline small veins (1.7-<2.5 mm) enrolled into a non-randomized cohort, treated with Amplifi prior to surgical creation of a distal radiocephalic AVF.
Receives: Device: The Amplifi System is a temporary extracorporeal blood pump designed to deliver controlled flow through a peripheral vein for 24-72 hours prior to AVF creation.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Physiologic AVF Maturation - RC (Amplifi vs Control)

    Proportion of RC subjects meeting physiologic maturation by duplex ultrasound, defined as cephalic vein diameter ≥ 5.0 mm and brachial artery flow ≥ 500 mL/min. Primary effectiveness comparison is Amplifi + AVF vs Standard AVF (control) in the RC.

    Measured: 2 weeks post-AVF creation

  2. Physiologic AVF Maturation - NRC (Non-Inferiority vs RC Control)

    Proportion of NRC subjects meeting the same physiologic maturation definition (diameter ≥ 5.0 mm and flow ≥ 500 mL/min), analyzed for non-inferiority against the RC control arm using a prespecified NI margin (e.g., -20% absolute).

    Measured: 6 weeks post-AVF creation

  3. Incidence of Major Device- or Procedure-Related Adverse Events

    Proportion of subjects experiencing at least one major device- or procedure-related adverse event (MAE) within 30 days of AVF surgery following Amplifi treatment.

    Measured: Through 30 days after AVF creation (primary safety window)

Secondary outcomes (8)
  1. Functional AVF Maturation

    Proportion of subjects achieving functional use for hemodialysis, defined as successful two-needle cannulation at prescribed blood flow for ≥ 75% of sessions over a consecutive 4-week period.

    Measured: Within 12 months post AVF creation

  2. Time to Catheter-Free Dialysis

    Days from AVF surgery to first successful dialysis using the study AVF without a central venous catheter.

    Measured: From AVF creation through 12 months

  3. Total Number of Interventions Required to Achieve and Maintain Functional and Secondary Patency

    otal count of endovascular or surgical interventions required to achieve and maintain both functional and secondary AVF patency. Interventions may include angioplasty, thrombectomy, surgical revision, or other procedures intended to restore or maintain access patency.

    Measured: 3, 6, and 12 months post-AVF creation

  4. Proportion of AVFs Maintaining Secondary Patency

    Proportion of AVFs that remain patent, with or without intervention, at 6 and 12 months following surgical creation. Secondary patency is defined as continued functional access use until abandonment, thrombosis, or surgical revision that precludes further use.

    Measured: 6 and 12 months post-AVF creation

  5. Proportion of AVFs that remain clinically usable for dialysis at 12 months post-creation

    Proportion of AVFs that remain clinically usable for dialysis at 12 months following surgical creation, as determined by the ability to provide adequate dialysis without abandonment, thrombosis, or surgical revision that precludes use.

    Measured: Through 12 months post AVF creation

  6. Proportion of AVFs abandoned within 12 months

    Proportion of AVFs abandoned within 12 months of surgical creation, with documentation of reasons for abandonment (e.g., failure to mature, infection, thrombosis, or dysfunction requiring abandonment).

    Measured: 12 months post-AVF creation

  7. Major Device-Related Adverse Events in Amplifi-Treated Subjects

    Proportion of Amplifi-treated subjects experiencing ≥1 major device-related adverse event (AE). Major device-related AEs include device-attributed death; major bleeding, pneumothorax, air embolism, thrombosis, thromboembolism, hemolysis, or thrombocytopenia; localized device-related infection; Amplifi-related re-hospitalization, prolonged hospitalization, or major surgery; and any complication adjudicated by the Investigator and Clinical Events Committee (CEC) as both major and device-related.

    Measured: From Amplifi System implantation through 30 days post-device removal and AVF creation

  8. Overall Adverse Event Rate

    Proportion of all subjects (Amplifi-treated and control) experiencing any adverse event during the first 6 months of study participation.

    Measured: 6 months post-enrollment

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted7 Oct 2025
  2. Study start12 May 2026
  3. Primary completion1 Jun 2027 (estimated)
  4. Study completion1 Dec 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Parallel assignment with two randomized arms (Amplifi vs control) and one non-randomized small vein cohort
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
160 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07211035
Sponsor's protocol ID
CLINP2113
Acronym
AMPLIFI-1
Status last verified
May 2026
First submitted
30 Sep 2025
Last updated
23 Jun 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

A study of End Stage Kidney Disease (ESRD), run by Amplifi Vascular, Inc. at 2 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 14 inclusion and 17 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 23 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Erdie De Peralta Vice President, Regulatory and Clinical Affairs, Master of Arts (19784080949, edeperalta@amplifivascular.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Physiologic AVF Maturation - RC (Amplifi vs Control) (time frame: 2 weeks post-AVF creation). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Jun 2026.

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