CClinicalTrials.gg
TerminatedNCT03637374Updated Aug 19, 2022Results posted

Safety, Efficacy, Longitudinal Costs and Patient-Centered Outcomes Using a TAAA Debranching Device

An interventional study of Visceral Manifold and Thoracic Bifurcation and Unitary Manifold in Thoracoabdominal Aortic Aneurysm, sponsored by Johns Hopkins University. Terminated at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-08-19.

Sponsored by Johns Hopkins University · Not applicable, Interventional, and Treatment

Why this study was terminated
Investigational device is no longer manufactured
Phase
Not applicable
Study type
Interventional
Enrollment
2
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
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Study summary

The primary purpose of this study is to assess the use of the TAAA Debranching Stent Graft System to repair thoracoabdominal aortic aneurysms in patients having appropriate anatomy, as measured by device safety, effectiveness, costs of delivery of aortic surgery care, and patient quality of life domains. Additionally, the study will assess technical success and treatment success at each follow-up interval.

Read the detailed description

The primary objective of this clinical investigation is to assess the use of the TAAA Debranching Stent Graft System to repair thoracoabdominal aortic aneurysms. While surgery remains a standard treatment for complex abdominal and thoracoabdominal aneurysms (TAAA), the tolerance of some patients to recover from such extensive and invasive open aortic reconstructions is poor. Endovascular repair may offer the opportunity to reduce patient risk with less invasive approaches, improve quality of life, and serve to reduce the cost burden. The primary technical safety endpoint is freedom from major adverse events (MAE) at 30 days or during hospitalization if this exceeds 30 days. The primary effectiveness endpoint is the proportion of study subjects with treatment success at 1 year.

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Conditions studied

  • Thoracoabdominal Aortic Aneurysm

Keywords

  • aortic aneurysm
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In context

Aneurysm

960 studies on the registry are indexed under Aneurysm; 175 are open to participants now.

This study's enrollment of 2 is below the median of 72 across 462 interventional studies indexed under Aneurysm.

Browse Aneurysm studies →

Lead sponsor

Johns Hopkins University is the lead sponsor of 1,783 studies on the registry; 313 are open to participants now.

Of its 203 completed or terminated interventional studies of FDA-regulated products, 140 (69%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

Modified Inclusion Criteria

A patient may be entered into the study if the patient has at least one of the following:

  • An aneurysm with a maximum diameter of > 5.5 cm or 2 times the normal diameter just proximal to the aneurysm using orthogonal (i.e., perpendicular to the centerline) measurements
  • Aneurysm with a history of growth > 0.5 cm in 6 months
  • Saccular aneurysm deemed at significant risk for rupture
  • Symptomatic aneurysm greater than 4.5 cm

Other inclusion criteria:

  • Axillary or brachial and iliac or femoral access vessel morphology that is compatible with vascular access techniques, devices or accessories, with or without use of a surgical conduit
  • Proximal landing zone for the thoracic bifurcation stent graft that has:

    • ≥ 2.5 cm of healthy/nondiseased tissue (including previously placed graft material) (neck) distal to the left subclavian artery (LSA) diameter in the range of 26-42 mm
    • ≥2.5cm of surgical graft distal to the left subclavian artery (LSA) diameter in the range of 26-42mm.
    • Adequate distance from the celiac artery, in order to accommodate cannulation from the antegrade access point when considering the total deployed length of the thoracic bifurcation and visceral manifold
  • Minimum branch vessel diameter greater than 5 mm
  • Iliac artery distal fixation site, including both native tissue and previously placed graft, greater than or equal to 15 mm in length and diameter in the range of 8 - 25 mm
  • Patency of the four major visceral vessels (SMA, celiac, right renal, left renal)
  • Age: ≥ 18 years old
  • Life expectancy: > 1 year

Exclusion criteria

Exclusion Criteria

General exclusion

  • Patient is a good candidate for and elects open surgical repair
  • Can be treated in accordance with the instructions for use with a legally marketed endovascular prosthesis
  • Is eligible for enrollment in a manufacturer-sponsored investigational device exemption (IDE) at the investigational site
  • Unwilling to comply with the follow-up schedule
  • Inability or refusal to give informed consent by patient or legal representative
  • Patient is pregnant or breastfeeding
  • Patient has a contained rupture
  • Patient has a ruptured aneurysm
  • Patient has a dissection in the treated portion of the aorta
  • Obstructive stenting of any or all of the visceral vessels

Medical exclusion criteria

  • Known sensitivities or allergies to the materials of construction of the devices, including nitinol (Nickel: Titanium), polyester, platinum-iridium, polytetrafluoroethylene (PTFE), platinum, gold, polyethylene, or stainless steel.
  • Known hypersensitivity or contraindication to anticoagulation or contrast media that cannot be adequately medically managed
  • Uncorrectable coagulopathy
  • Body habitus that would inhibit x-ray visualization of the aorta or exceeds the safe capacity of the equipment
  • Patient has had a major surgical or interventional procedure unrelated to the treatment of the aneurysm planned \< 30 days of the endovascular repair
  • Unstable angina (defined as angina with a progressive increase in symptoms, new onset at rest or nocturnal angina)
  • Systemic or local infection that may increase the risk of endovascular graft infection
  • Baseline creatinine greater than 2.0 mg/dL
  • History of connective tissue disorders (e.g., Marfan Syndrome, Ehler's Danlos Syndrome)

Anatomical exclusion criteria

  • Thrombus or excessive calcification within the neck of the aneurysm
  • Branch stenosis ≥ 70%
  • Anatomy that would not allow maintenance of at least one patent hypogastric artery
  • Anatomy that would not allow primary or assisted patency of the left subclavian artery
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
2 participants (actual)

Study arms

  • Experimental
    Primary Study Arm

    The TAAA Debranching Stent Graft System is comprised of two investigational devices including the Visceral Manifold and Thoracic Bifurcation and the unitary manifold. The thoracic bifurcation and the visceral manifold as well as the unitary manifold work to facilitate endovascular stenting of the visceral vessels (renals, celiac, SMA) while maintaining flow to the visceral and infrarenal segments.

    Device: Visceral Manifold and Thoracic Bifurcation · Device: Unitary Manifold · Device: TAAA Debranching Stent Graft System

  • Other
    Expanded Selection Arm

    The Expanded Selection Arm will be treated the same as those in the Primary Study Arm. Your doctor will determine what arm you are in. TAAA Debranching Stent Graft System is comprised of two investigational devices including the Visceral Manifold and Thoracic Bifurcation and the unitary manifold. The thoracic bifurcation and the visceral manifold as well as the unitary manifold work to facilitate endovascular stenting of the visceral vessels (renals, celiac, SMA) while maintaining flow to the visceral and infrarenal segments.

    Device: Visceral Manifold and Thoracic Bifurcation · Device: Unitary Manifold · Device: TAAA Debranching Stent Graft System

Interventions

  • DeviceVisceral Manifold and Thoracic Bifurcation

    Endovascular stent graft system

  • DeviceUnitary Manifold

    Endovascular stent graft system

  • DeviceTAAA Debranching Stent Graft System

    Endovascular stent graft system

06

What researchers measure

Primary outcomes

  1. Freedom From Major Adverse Events (MAEs) at 30 Days

    Major adverse events include death, bowel ischemia, myocardial infarction, paraplegia, renal failure, respiratory failure, and stroke.

    Time frame: 30 days

Secondary outcomes

  1. Treatment Success at 1 Year

    Treatment success is defined as a composite of technical success and freedom from the following: Aneurysm enlargement, Aneurysm rupture, Aneurysm-related mortality, Conversion to open repair, Secondary intervention for migration, Type I and III endoleaks, device integrity failure, and patency-related events.

    Time frame: 1 year

07

Results

Posted Aug 19, 2022
Limitations and caveats
Enrollment is permanently closed because the investigational device is no longer manufactured. The target enrollment was not reached and there was insufficient power to measure the effect of the intervention.

Participant flow

Participant flow — Overall Study
MilestonePrimary Study ArmExpanded Selection Arm
Started20
Completed00
Not completed20
Withdrew: Death20

Outcome measures

PrimaryFreedom From Major Adverse Events (MAEs) at 30 Days

Major adverse events include death, bowel ischemia, myocardial infarction, paraplegia, renal failure, respiratory failure, and stroke.

Time frame:
30 days
Reported as:
Count of participants · Participants
Freedom From Major Adverse Events (MAEs) at 30 Days
ParticipantsPrimary Study ArmExpanded Selection Arm
Freedom From Major Adverse Events (MAEs) at 30 Days10
SecondaryTreatment Success at 1 Year

Treatment success is defined as a composite of technical success and freedom from the following: Aneurysm enlargement, Aneurysm rupture, Aneurysm-related mortality, Conversion to open repair, Secondary intervention for migration, Type I and III endoleaks, device integrity failure, and patency-related events.

Time frame:
1 year
Reported as:
Count of participants · Participants
Treatment Success at 1 Year
ParticipantsPrimary Study ArmExpanded Selection Arm
Treatment Success at 1 Year00

Adverse events

Collected over 1 year. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Primary Study Arm2/2 (100%)1/2 (50%)0/2 (0%)
Expanded Selection Arm———
Most frequent serious events
Most frequent serious events
EventPrimary Study ArmExpanded Selection Arm
bowel ischemiaGastrointestinal disorders1/2—

Baseline characteristics

Enrolled patients who underwent staged/non-staged procedures were analyzed.

Age, Categorical
Age, Categorical(Participants)Primary Study ArmExpanded Selection ArmTotal
<=18 years000
Between 18 and 65 years000
>=65 years202
Sex: Female, Male
Sex: Female, Male(Participants)Primary Study ArmExpanded Selection ArmTotal
Female000
Male202
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Primary Study ArmExpanded Selection ArmTotal
Hispanic or Latino000
Not Hispanic or Latino202
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Primary Study ArmExpanded Selection ArmTotal
American Indian or Alaska Native000
Asian000
Native Hawaiian or Other Pacific Islander000
Black or African American000
White202
More than one race000
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(Participants)Primary Study ArmExpanded Selection ArmTotal
United States202
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Study locations

1 site
  • Johns Hopkins University
    Baltimore, Maryland 21287, United States
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References and documents

Publications

  • Anderson J, Nykamp M, Danielson L, Remund T, Kelly PW. A novel endovascular debranching technique using physician-assembled endografts for repair of thoracoabdominal aneurysms. J Vasc Surg. 2014 Nov;60(5):1177-1184. doi: 10.1016/j.jvs.2014.05.090. Epub 2014 Jul 3. PubMed 24997805 ↗

Study documents

  • Protocol and statistical analysis plan · Jun 30, 2020

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 19, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03637374
Lead sponsor
Johns Hopkins University
Responsible party
Sponsor
First posted
Aug 20, 2018
Start date
Sep 8, 2020
Primary completion
Mar 21, 2022
Completion
Jun 6, 2022
Results posted
Aug 19, 2022
Last update
Aug 19, 2022

Study contacts

James H Black, MD
principal investigator · Johns Hopkins University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Jul 2022. You cannot join it, but the record below documents what was studied.

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