The Liquid Embolic Agent for the Treatment of Brain Arteriovenous Malformation (PARTNER)

December 30, 2025 updated by: MicroPort NeuroTech Co., Ltd.

a Prospective, Multi-center, Open-label, Non-inferiority, Randomized, Controlled Registration Trial of the Liquid Embolic Agent for the Treatment of Brain Arteriovenous Malformation

This study is designed as a prospective, multi-center, open-label, non-inferiority, randomized controlled clinical trial. The control device is Onyx Liquid Embolic System marketed by Micro Therapeutics Inc. DBA ev3 Neurovascular (NMPA (J) 20173136690). According to the inclusion and exclusion criteria specified in this trial protocol, approximately 116 subjects with brain arteriovenous malformation will be enrolled for interventional embolization treatment. The subjects will undergo follow-up before the surgery, after device implantation, at discharge, 1 month (± 7 days), 6 months (± 30 days), and 12 months (± 60 days) after the first embolization. When necessary, unscheduled follow-up will be conducted to record various indicators for evaluating the safety and effectiveness of liquid embolic agents in the treatment of brain arteriovenous malformations.

Study Overview

Status

Status

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

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.

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 (Estimated)

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.
116

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 Locations

  • China
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, China
        • Recruiting
        • Shanghai Changhai Hospital
        • Contact:
          • Li qiang

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age ≥ 18 and ≤ 80 years at the time of signing the informed consent
  • Subjects with brain arteriovenous malformation diagnosed by CT/MRI/DSA
  • The target brain arteriovenous malformation is classified by Spetzler-Martin in the range of Ⅰ ~ Ⅳ
  • Subjects themselves and/or their guardian are able to understand the purpose of the study, consent to participate, and sign the informed consent form
  • Brain arteriovenous malformations deemed suitable for liquid embolic agent intervention as assessed by the investigator

Exclusion Criteria:

  • Multiple brain arteriovenous malformations
  • Brain arteriovenous malformation complicated with blood flow-related aneurysm that may require staged and delayed treatment using other methods within the one-year follow-up period
  • Brain arteriovenous malformation with a history of stereotactic radiosurgery within 3 years
  • Brain arteriovenous malformation with bleeding within 1 week
  • Brain arteriovenous malformation with an expected number of embolizations ≥ 4
  • Brain arteriovenous malformation scheduled for surgical resection after embolization
  • mRS score ≥ 3
  • Subjects unsuitable for anesthesia or endovascular surgical treatment, due to major diseases of cardio, lung, liver, spleen or kidney, malignant brain tumors, severe active infection, disseminated intravascular coagulation, or a history of severe mental illness, etc
  • Subjects who undergo major surgical procedures (such as tumor resection, vital organ surgery, etc.) within 30 days prior to signing the informed consent form, or those scheduled for such procedures within 60 days after signing the informed consent form
  • Contraindications for liquid embolic agent treatment, including but not limited to: contraindications for DSA, severe allergy or intolerance to contrast agents, severe allergy or intolerance to antiplatelet or anticoagulant medications required for treatment, or severe allergy to tantalum metal
  • Pregnant or lactating women
  • Subjects participating in other drug or device studies that have not reached their endpoints or who have just withdrawn from the group for less than one month

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: None (Open Label)

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.
Experimental: Liquid embolic agent
Liquid embolic agent developed and manufactured by MicroPort NeuroTech.Liquid embolic agents are used to embolize cerebrovascular malformations during the procedure.
Device: liquid embolic agent
liquid embolic agent
Active Comparator: the Onyx Liquid Embolic System
The Onyx Liquid Embolic System was developed and manufactured by Micro Therapeutics Inc. DBA ev3 Neurovascular. The Onyx Liquid Embolic System is used to embolize cerebrovascular malformations during the procedure.
Device: liquid embolic agent
liquid embolic agent

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
Rate of effective embolization of target brain arteriovenous malformation
Time Frame: Perioperative
Effective embolization refers to a reduction of ≥ 50% after the last embolization of the target brain arteriovenous malformation compared with that before the first embolization
Perioperative

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
Rate of favorable clinical outcomes during the 1 year follow-up period
Time Frame: 1 year after procedure
Favorable clinical outcome refers to a mRS score of ≥ 0 and ≤ 2
1 year after procedure
Incidence of symptomatic stroke or death within one month after procedure
Time Frame: 1 month after procedure
1 month after procedure
Incidence of symptomatic intracranial hemorrhage related to procedure within 1 month after procedure
Time Frame: 1 month after procedure
1 month after procedure
Incidence of symptomatic ischemic stroke related to procedure within 1 month after procedure
Time Frame: 1 month after procedure
1 month after procedure
Incidence of device-related serious adverse events during the 1 year follow-up period
Time Frame: 1 year after procedure
1 year after procedure

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.
MicroPort NeuroTech Co., Ltd.

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.
May 28, 2024

Primary Completion (Actual)

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.
May 28, 2025

Study Completion (Estimated)

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.
May 28, 2026

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).
January 16, 2025

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.
December 30, 2025

First Posted (Estimated)

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.
January 2, 2026

Study Record Updates

Last Update Posted (Estimated)

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.
January 2, 2026

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.
December 30, 2025

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.
December 1, 2025

More Information

Terms related to this study

Keywords

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.
  • LAVA-2023-01-CIP-00

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

IPD Plan Description

To be decided

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings