Treatment of Unruptured Intracranial Aneurysms in China

September 19, 2024 updated by: Duan Chuanzhi, Zhujiang Hospital

Prospective Cohort Study of Interventional Therapy and Craniotomy for Unruptured Aneurysms

Un-ruptured intracranial aneurysm is a complex disease that seriously affects human life and health. At present, the treatment of intracranial aneurysm is divided into interventional treatment and craniotomy clipping, the two treatment methods are different in the intervention effect of aneurysm, for example, the complications of interventional therapy are lower than craniotomy clipping, but the long-term patency rate is lower than craniotomy clipping, and there is no standard of treatment in different parts of aneurysm in our country, the choice of intervention measures of un-ruptured aneurysm is different in different clinical centers; on the other hand, there are serious problems in the treatment of aneurysms, because without the relevant guidelines of diagnosis and treatment of intracranial aneurysms, different clinical centers will cause excessive treatment of un-ruptured aneurysms, not only bring unreasonable utilization of medical resources, but also cause the subject's life and property to be threatened.

The patients with un-ruptured intracranial aneurysm(estimated sample number over 1500) were included in prospective cohort study, after clipping and intervention operation, setting fixed time for postoperative follow-up, the clinical data and image data were recorded, the safety, efficacy and economic benefits of interventional treatment and craniotomy clipping were compared, providing strategies for the standardized treatment of un-ruptured intracranial aneurysms.

Study Overview

Status

Status

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

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.

Detailed Description

For this study,investigators consulted and hired professionals and experts about data collection, data and methodology,including Data Monitoring Committee, Data Management Committee, Progect Academic Committee, Executive Group, Project Manager, Project Statistician,Technical Support Center. investigators have a scientific regulations for this project. Project Manager and Executive Group: To ensure the successfully implementation of this project, including charging the daily operations of the study in 20 different research hospitals, organizing the monthly meeting to consider issures raised during the monthly progress of the study, liaising with the steering committee,the data management centre and statistical centre. Data management Committee: To be responsible for setting up and maintain the Electronic Data Capture (EDC) System according to the papera Case Report Form(pCRF) designed by principal investigators. To collect and save the pCRF coming from sub-centers. To entry the data into EDC system and keep the same with CRF. To organize training for the investigators about the rules in filling the EDC and pCRF.To determine the frequency of the Data Management Report and to fed it back to the steering committee every three months. Data Mornitoring Committee: To determine the frequency of the data mornitoring including the source data(Medical records) accuracy, completeness and representativeness comparing the external data(EDC, pCRF) in participanted centers.

To report the results after the mornitoring back to the steering committee about the missing data, non-reported and other problems about the study. To make a Standard Operation Procedure(SOP) from getting data to using data. Academic Committee: To supervise the academic issues including patient recruitment, protocol deviation, adverse events evalutating. To settle down the question and problem in the process of the study. Project Statistician: We cooperate with the statisticians of Medical Research & Biometrics Center National Center for Cardiovascular Diseases, China to get the perfessional statistical report. Technical Support Center:To provide technical support during the process of the study.

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.
Observational

Enrollment (Actual)

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.
5126

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

  • China
    • Guangdong
      • Guangzhou, Guangdong, China, 510282
        • Southern medical university, zhujiang hospital

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

14 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients with un-ruptured intracranial aneurysms.

Description

Inclusion Criteria:

  1. At least one imaging methods( CTA / MRA / DSA ) confirmed un-ruptured intracranial aneurysms, whether have clinical symptoms or not;
  2. For multiple aneurysms, regardless of previous treatment, the requirement for treatment interval should > 6 months.
  3. The patient has the autonomous life ability, the scores of MRS≤ 3 points;
  4. The subjects age > 14 years
  5. subjects or family members agree to sign informed consent.

Exclusion Criteria:

  1. Intracranial aneurysms and with 30 days of unexplained subarachnoid hemorrhage;
  2. Subjects with other intracranial vascular malformations, such as AVM, AVF, etc.;
  3. Subjects with malignant tumors in the intracranial or other parts of the body;
  4. Fusiform, traumatic, bacterial or dissecting aneurysm;
  5. Subjects with severe mental illness unable to communicate when diagnosing disease;
  6. The body condition is poor, the survival time is less than 1 year or poor physical condition, can not tolerate the general anesthesia or aneurysm surgery;
  7. Subjects involved in other intracranial aneurysms related clinical research;
  8. A patient who received surgical clipping or endovascular treatment at once;
  9. Subjects who were not followed up.
  10. < 3 mm intracranial aneurysm。

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

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
1
patients with intracranial aneurysms who underwent endovascular or miro-neurosurgical treatment

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
The effectiveness evaluation of interventional treatment .
Time Frame: 6 months later after operation.
The effectiveness evaluation including the complete occlusion（Raymond classification=1） rate of aneurysms.
6 months later after operation.
Raymond classification
Time Frame: 1 year
  1. Complete occlusion
  2. Partial occlusion
  3. Recurrence
1 year
The effectiveness evaluation of craniotomy clipping.
Time Frame: 6 months later after operation.
The effectiveness evaluation including the recurrence（Raymond classification=3） rate of aneurysms.
6 months later after operation.
The safety evaluation of interventional therapy and craniotomy clipping.
Time Frame: 6 months later after operation.
The safety evaluation including the mortality（mRS=6） rate and disability（2<mRS<6） rate of subjects.
6 months later after operation.
Clinical function prognosis
Time Frame: 1 year

0 completely silent

  1. despite symptoms, but not visibly disabled, can complete all regular duties and activities
  2. mild disabilities, not all activities previously possible, but can deal with personal affairs without need of assistance
  3. moderate disability requires some help, but walking does not need assistance
  4. severe disabilities, unable to walk independently, no others can not meet their needs
  5. severely disabled, bedridden, Urine, requiring continuous care and care
  6. mortality
1 year

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
The safety evaluation of interventional therapy or craniotomy clipping.
Time Frame: up to 24 months
The safety evaluation including the mortality（mRS=6） rate and disability（2<mRS<6） rate of subjects.
up to 24 months
The effectiveness evaluation of interventional treatment or craniotomy clipping.
Time Frame: up to 24 months
The effectiveness evaluation including the complete occlusion（Raymond classification=1） rate of aneurysms.
up to 24 months
The success rate of treatment or craniotomy clipping.
Time Frame: up to 24 months
angiography revealed total or near total occlusion of aneurysm in 6 months after operation, no recurrence of aneurysm was found, the treatment was considered successful.
up to 24 months
The incidence of major adverse events during follow-up.
Time Frame: up to 24 months
cerebrovascular complications including any intracranial hemorrhage, ischemia, or death
up to 24 months
The cost of interventional therapy or craniotomy clipping.
Time Frame: up to 24 months
All costs associated with treatment
up to 24 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.
Zhujiang Hospital

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Beijing Tiantan Hospital
West China Hospital
Xuanwu Hospital, Beijing
Guangdong Provincial People's Hospital
Third Affiliated Hospital, Sun Yat-Sen University
Shenzhen Second People's Hospital
Shantou Central Hospital
First Affiliated Hospital of Chongqing Medical University
The Affiliated Hospital Of Southwest Medical University
Guangdong 999 Brain Hospital
ZhuHai Hospital
Eighth Affiliated Hospital, Sun Yat-sen University
Zhongshan Hospital Of Traditional Chinese Medicine

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: Chuanzhi Duan, Ph.D., Department of Neurosurgery, Southern Medical University, Zhujiang Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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.
January 1, 2016

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.
December 30, 2022

Study Completion (Actual)

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 30, 2022

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).
April 7, 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.
April 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.
April 28, 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.
September 23, 2024

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.
September 19, 2024

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.
September 1, 2024

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.
  • 2016YFC1300804

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Data are available upon reasonable request. The data supporting this study's findings are available from the Principal Investigator （Chuanzhi Duan） upon reasonable request.

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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