An interventional study of Physician-Modified Terumo Treo Abdominal Stent-Graft System in Aortic Aneurysm, sponsored by Mayo Clinic. Recruiting at 1 site in United States. Open to participants aged 50 Years and older. Per ClinicalTrials.gov, last updated 2026-07-13.
Sponsored by Mayo Clinic · Not applicable, Interventional, and Treatment
The purpose of this research is to assess safety and preliminary effectiveness of the Physician-Modified Terumo Treo Abdominal Stent-Graft System.
222 studies on the registry are indexed under Aortic Aneurysm; 63 are open to participants now.
This study's planned enrollment of 20 is below the median of 62 across 101 interventional studies indexed under Aortic Aneurysm.
Browse Aortic Aneurysm studies →Mayo Clinic is the lead sponsor of 3,269 studies on the registry; 672 are open to participants now.
Of its 452 completed or terminated interventional studies of FDA-regulated products, 321 (71%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
From a breathing test (spirometry): how much air you can blow out in the first second. Often given as a percentage of what is expected for your age, height and sex.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
FEV1
From a breathing test (spirometry): how much air you can blow out in the first second. Often given as a percentage of what is expected for your age, height and sex.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Device: Physician-Modified Terumo Treo Abdominal Stent-Graft System
A physician modified Terumo Treo abdominal stent-graft system will be used during repair surgery for type II, III and IV thoracoabdominal aortic aneurysms.
Proportion of study subjects with treatment success at 1 year
Treatment success is defined as freedom from the following: * Aneurysm enlargement: \>5mm as compared to any previous CT measure using orthogonal (i.e., perpendicular to the centerline) measurements. * Aneurysm rupture * Aneurysm-related mortality * Conversion to open repair * Secondary intervention for migration, Type I and III endoleaks, device integrity failure (e.g., fracture), and patency-related events (i.e., device component stenosis or occlusion and embolic events) * Graft infection * Disabling Stroke * Permanent dialysis Results are reported as a percentage
Time frame: 1 year
Proportion of procedures that achieve technical success
Technical success is defined as: * Successful access to the arterial system using remote arterial exposure, percutaneous technique, or open surgical conduits * Successful delivery and Deployment at the intended implantation site * Successful side branch catheterization and placement of bridging stents with restoration and maintenance of flow in all intended target vessels. * Successful withdrawal of the delivery system * Patency of all endovascular graft and stent components * Absence of device deformations requiring unplanned placement of an additional device * Absence of Type I and III endoleaks at completion angiography that extends beyond 30 days by confirmatory imaging (CTA, MRA or duplex ultrasound) Results are reported as a percentage
Time frame: 1 year
Plan to share: No
No publications or documents are linked to this record.
Started Jul 2026 (actual). Primary completion is estimated for Jul 2028, 24 months after the start.
Of 44 interventional studies with no phase under Aortic Aneurysm, half reached primary completion within 53 months of starting (the median), counting those still running; a quarter within 17 and three quarters within 70. This study's planned 24 months is below that.
How these figures are worked out, and which studies are left out of them.
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