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Thoracoabdominal Aortic AneurysmNCT06478576

Study on Multibranched Stent Graft System in the Treatment of Thoracoabdominal Aortic Aneurysm

A study testing multibranched stent graft system in people with Thoracoabdominal Aortic Aneurysm, run by Lifetech Scientific (Shenzhen) Co., Ltd. at 1 site in China.

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 objective of this study is to evaluate the feasibility of multibranched stent graft system for Endovascular Treatment of Thoracoabdominal Aortic Aneurysm(TAAA) Read more about this study

Who is it for?
Ages 18 to 80 years
Conditions the study is for
Thoracoabdominal Aortic Aneurysm
What is being tested?
multibranched stent graft system
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
73 participants
Where
1 siteChina
Study dates
1 Jun 2023to 30 May 2028
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 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age ≥18 and ≤80 years;
  • Patients diagnosed with thoracoabdominal aortic aneurysm (based on the modified Crawford classification and the 2019 European guidelines for the treatment of aortic aneurysms), and should meet at least one of the following conditions:
  • Maximum diameter of TAAA >50 mm,
  • Rapid growth of sac >5 mm in diameter in the most recent 6 months, or rapid growth >10 mm in diameter within 1 year
  • Symptoms related to thoracoabdominal aortic aneurysm, such as clear abdominal pain and back pain.
  • Anatomical criteria, including:
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  • Proximal landing zone 17-36 mm in diameter and ≥25 mm in length
  • If distal landing zone in abdominal aorta:Distal landing zone 12-36 mm in diameter and ≥20 mm in length If distal landing zone in iliac artery:Distal landing zone 7-25 mm in diameter and ≥15 mm in length
  • Visceral vessel landing zone 6-13 mm in diameter and ≥15 mm in length
  • Renal artery landing zone 4.5-9 mm in diameter and ≥15 mm in length
  • Patients with Feasible iliofemoral artery and upper patent upper extremity access;
  • Patients who can understand the purpose of the trial, voluntarily participate and sign the informed consent form, and are willing to complete the follow-up according to the requirements of the protocol;

Who cannot join

  • Ruptured aortic aneurysm in unstable haemodynamic condition;
  • Aneurysmal aortic dissection;
  • Infected or mycotic aortic aneurysm;
  • Patients whose systemic or local infection may increase the risk of intravascular graft infection;
  • Patients with occlusion of the superior mesenteric artery, celiac trunk, or renal artery.
  • Requiring simultaneous coverage or embolisation for bilateral internal iliac arteries;
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  • Severe stenosis, calcification, or mural thrombus at stent-graft landing zone;
  • Diagnosis of acute coronary syndrome within 6 months; Acute coronary syndrome refers to an acute cardiac ischemia syndrome caused by the rupture or erosion of unstable atherosclerotic plaques in the coronary arteries, which is followed by the formation of fresh thrombus. It includes ST-segment elevation myocardial infarction, non-ST-segment elevation myocardial infarction, and unstable angina pectoris.
  • Patients with any transient ischemic attack (TIA) or ischemic stroke within 3 months;
  • Preoperative liver renal function abnormalities (ALT or AST ≥ 5 times the upper limit of normal value), or serum creatinine ≥ 150 μmol/L;
  • Severe pulmonary insufficiency who cannot tolerate general anaesthesia;
  • Severe coagulation dysfunction;
  • Undergone major surgical or interventionic surgery within 30 days before surgery;
  • An allergic history for contrast agents, anticoagulants, antiplatelet drugs, stent graft or materials of delivery system( (referring to nickel-titanium, polyester, PTFE, nylon-based polymer materials);
  • Patients with connective tissue diseases, such as systemic lupus erythematosus, Marfan syndrome, Ehlers-Danlos syndrome, or Behcet's disease;
  • Patients with takayasu arteritis;
  • Patients with serious vital organ dysfunction or other serious disease;
  • Planning pregnancy, pregnancy, or breastfeeding;
  • The patient participated in other clinical trials or not completed or withdrawn from other clinical trials within the last 3 months at the time of screening period ;
  • Life expectancy less than 1 year;
  • Patients who are not appropriate for endovascular repair based on the investigators' clinical judgement.

Trial locations and contacts

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

China1 site, 1 recruiting
  • Chinese PLA General Hospital

    Beijing

    Wei Guo, Professor

    Wei Guo

    Recruiting

Other trials in China

About this study

Official title: GUo's Renovisceral Artery Reconstruction-2: a Prospective,Single Center,Single-arm Clinical Trial to Evaluate the Safety and Efficacy of a multibRANched sTEnt Graft systEm for Thoracoabdominal Aortic Aneurysm

The objective of this study is to evaluate the feasibility of multibranched stent graft system for Endovascular Treatment of Thoracoabdominal Aortic Aneurysm(TAAA)

Read the detailed description

The physician shall strictly follow the clinical study protocol and shall not deviate from or substantially change the protocol. However, in case of emergency such as immediate risk to the subjects, which needs tobe eliminated immediately, it may be reported in written form afterwards. During the course of the study,documents such as amendments to the clinical study protocol and informed consent, requests for deviation,and resumption of the suspended clinical study shall be subject to the written approval of the Ethics Committee

Being tested
multibranched stent graft system
Keywords
Lifetech, multibranched stent graft system, Endovascular Treatment
Medical subject headings
Aortic Aneurysm, Thoracoabdominal

What participants receive

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

  • multibranched stent graft systemDevice

    To evaluate the feasibility of multibranched stent graft system for Endovascular Treatment of Thoracoabdominal Aortic Aneurysm(TAAA)

Study groups in NCT06478576
Study groupRoleWhat they receive
multibranched stent graft systemExperimentalEndovascular treatment of patients withThoracoabdominal Aortic Aneurysm using multibranched stent graft system
Receives: Device: multibranched stent graft system

What is being measured

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

  1. The Incidence of Major Adverse Events (MAE) Within 30 Days Postoperative

    Major Adverse Event (MAE) was defined as all-cause death, liver failure, intestinal necrosis, kidney failure, stroke, permanent paraplegia, myocardial infarction, and respiratory failure

    Measured: within 30 days postoperative

  2. The success rate of thoracic and abdominal aortic aneurysm treatment after 12 months of surgery

    Successful treatment of thoracoabdominal aortic aneurysm is a composite endpoint that requires meeting the following indicators at the same time: immediate technical success (immediate technical success refers to the successful delivery of the delivery system to the predetermined position, successful deployment of the system, safe withdrawal of the delivery system from the body, and no type I/III endoleak), and no secondary surgical intervention related to thoracoabdominal aortic aneurysm within 12 months after surgery (secondary surgery caused by aneurysm rupture, continuous enlargement, stent migration, type I/III endoleak, branch vessel stenosis/occlusion).

    Measured: Intraoperative and 12 months postoperatively

Secondary outcomes (10)
  1. Delivery system-related complications during perioperative period (from surgery to 30 days after surgery)

    The incidence rate of related complications during the perioperative period (from surgery to 30 days after surgery), including intraoperative transition surgeries caused by delivery devices, bleeding, hematoma, and pseudoaneurysm during the delivery access route.

    Measured: perioperative period (from surgery to 30 days after surgery)

  2. All-cause mortality at 6 months and 12 months postoperatively

    All-cause mortality refers to death from any cause that occurs within the follow-up time period.

    Measured: 6 months and 12 months postoperatively

  3. Mortality Rate Related to Thoracoabdominal Aortic Aneurysm at 6 months and 12 months postoperatively

    Mortality related to thoracoabdominal aortic aneurysm refers to death caused by the rupture of the thoracoabdominal aortic aneurysm or surgery for the treatment of the thoracoabdominal aortic aneurysm.

    Measured: 6 months and 12 months postoperatively

  4. Incidence of severe adverse events at 6 and 12 months postoperatively

    A serious adverse event refers to any occurrence during a clinical trial that leads to death or a serious deterioration in health status, including fatal illnesses or injuries, permanent defects in physical structure or function, the need for hospitalization or prolongation of hospital stay, the need for medical or surgical intervention to prevent permanent defects in physical structure or function, or events leading to fetal distress, fetal death, or congenital abnormalities or defects.

    Measured: 6 months and 12 months postoperatively

  5. Device-related adverse events at 6 months and 12 months postoperatively

    Adverse events refers to an unfavorable medical event that occurs during a clinical trial, regardless of whether it is related to the medical device being tested. However, it should be distinguished from normal postoperative stress reactions, such as fever and constipation. If the researcher determines that they are normal postoperative stress reactions, they do not need to be recorded as adverse events. If the surgeon chooses staged reconstruction due to the subject's medical condition, it does not constitute an adverse event.

    Measured: 6 months and 12 months postoperatively

  6. Incidence rate of aneurysmal enlargement at 6 and 12 months postoperatively

    aneurysmal enlargement defined as a maximum aortic diameter increase of > 5 mm

    Measured: 6 and 12 months postoperatively

  7. Incidence rate of Type I/III endoleak at 6 and 12 months postoperatively

    Type I endoleak, also known as peri-graft endoleak or graft-related endoleak, refers to the leakage caused by the inability of the stent graft to tightly adhere to the autologous vessel, leading to continuous blood flow into the aneurysm sac. This includes proximal and distal Type I endoleaks. Type III endoleak refers to the leakage caused by the inability of the stent graft's own connectors to tightly adhere or the rupture of the artificial vessel, which results in continuous blood flow into the aneurysm sac.

    Measured: 6 and 12 months postoperatively

  8. Incidence rate of Stent graft migration at 6 and 12 months postoperatively

    The evaluation criteria are: at the postoperative follow-up nodes, the position shift of the thoracoabdominal aortic covered stent is greater than 10mm compared to before discharge, or the shift causes symptoms or requires intervention.

    Measured: 6 and 12 months postoperatively

  9. The patency rate of the renovisceral artery at 6 and 12 months postoperatively

    branch vessel patency is defined as stenosis of ≤50%

    Measured: 6 and 12 months postoperatively

  10. Incidence of secondary surgical interventions related to the Thoracoabdominal Aortic Aneurysm at 6 and 12 months postoperatively

    Notes: Due to the patient's condition, the surgeon's choice of staged reconstruction does not constitute a secondary surgical intervention.

    Measured: 6 and 12 months postoperatively

Timeline

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

  1. First posted27 Jun 2024
  2. Study start1 Jun 2023
  3. Primary completion30 May 2028 (estimated)
  4. Study completion30 May 2028 (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
Other
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
73 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06478576
Sponsor's protocol ID
XJ-TAAA-02
Status last verified
Jul 2024
First submitted
24 Jun 2024
Last updated
12 Jul 2024
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A study testing multibranched stent graft system in people with Thoracoabdominal Aortic Aneurysm, run by Lifetech Scientific (Shenzhen) Co., Ltd. at 1 site in China.

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 12 inclusion and 21 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 12 Jul 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. 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 Wei Xu, PM (15695219339 ext. 86, xuwei@lifetechmed.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

The Incidence of Major Adverse Events (MAE) Within 30 Days Postoperative (time frame: within 30 days postoperative). The study lists 2 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 12 Jul 2024.

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