ClinicalTrials.gg
RecruitingNCT04545502PANTHERUpdated Aug 20, 2026

PANTHER Study of Terumo Aortic Knitted and Woven Grafts, and Cardiovascular Patches

An observational study in Aneurysm, Dissection and Aortic Root Aneurysm, sponsored by Vascutek Ltd.. Recruiting at 30 sites in 6 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-20.

Sponsored by Vascutek Ltd. (part of Terumo Corporation) · Observational

From the registry’s dates

  • Started Feb 2021; still recruiting 5 years 8 months later.
Study type
Observational
Model
Cohort
Time perspective
Other
Enrollment
2,000
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this registry is to collect safety and performance data on all commercially available Terumo Aortic knitted and woven grafts, and cardiovascular patches in standard clinical practice.

Data will be collected both retrospectively and prospectively.

02

Conditions studied

  • Aneurysm
  • Dissection
  • Aortic Root Aneurysm
  • Aortic Root Dissection
  • Carotid Artery Injuries
  • Aortic Arch
  • Bypass Extremity Graft
  • Occlusive Vascular Disease
  • Aortic Diseases

Keywords

  • Vascular Surgery
03

In context

Aneurysm

381 studies on the registry are indexed under Aneurysm; 78 are open to participants now.

This study's planned enrollment of 2,000 is above the median of 157 across 132 observational studies indexed under Aneurysm.

Browse Aneurysm studies →

Lead sponsor

Vascutek Ltd. is the lead sponsor of 17 studies on the registry; 5 are open to participants now.

First submitted after Vascutek Ltd. became part of Terumo Corporation.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients who require treatment, or have already received treatment within the last 5 years, with the following commercially available Terumo Aortic knitted and woven grafts and cardiovascular patches:

  • Gelsoft Plus - Straights and Bifurcated
  • Gelsoft Plus - Extra-Anatomical
  • Cardiovascular Patches - Gelseal, Gelsoft and Thin Wall
  • Gelweave - Abdominal, Thoracic and Thoracoabdominal
  • Gelweave - Valsalva This is a non-interventional study and therefore only patients who would normally receive treatment with a Terumo Aortic devices as part of standard treatment at the participating institution can be enrolled.

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.

Inclusion criteria

  • Patients must meet all of the following inclusion criteria in order to be eligible for inclusion in the study:

All Patients:

  • Patient meets the minimum age as per local regulations at time of consent
  • Patient requires treatment with study device(s) according to the IFU(s)
  • Patient is willing and able to comply with all SOC procedures and study visits
  • Patient or their legally authorised representative (LAR) has given written to participate in study, including consent to collect data retrospectively

    • For prospective emergency patients, retrospective consent is permissible
    • For retrospective patients who are deceased at time of enrollment, local EC regulations relating to consent process should be followed.

Retrospective Patients only:

  • Patient has a minimum of 1 year post-operative follow-up data available, or complete data to death.
  • Patient implant date is no more than 5 years prior to study start date.

Exclusion criteria

Exclusion Criteria:

  • Any patient who meets any of the following exclusion criteria will be excluded from participation in the study:

    • Patient is unable or unwilling to comply with the SOC procedures or follow-up regime
    • Patient is per the device IFU
    • Patient has any other medical, social or psychological problems that in the opinion of the investigator preclude them from receiving this treatment and the procedures and evaluations pre- and post-procedure
Terms in these criteria, in plain language(2)

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.

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.

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.

05

Study design

Observational model
Cohort
Time perspective
Other
Enrollment
2,000 participants (estimated)
Target follow-up
10 Years
Patient registry
Yes

Groups and cohorts

  • Gelsoft Plus - Straights and Bifurcated

    Patients with aneurysmal or occlusive disease, including those with connective tissue disorders who have received/will receive a Gelsoft Plus Straight or Bifurcate, implanted in the abdomen or peripheral arteries in the last 5 years and from study launch onwards.

    Device: Gelsoft Plus Vascular Graft

  • Gelsoft Plus - Extra-Anatomical

    Any patients who have received/will receive a Gelsoft Plus Extra-Anatomical supported or unsupported graft, implanted for: axillary-femoral bypass, femoral-femoral bypass or femoral-popliteal bypass in the last 5 years and from study launch onwards.

    Device: Vascular Bypass Graft

  • Cardiovascular Patches - Gelseal, Gelsoft, Thin Wall

    Patients who have been implanted with/require a cardiovascular patch for: thoracic vessel repair with a Gelseal Cardiovascular Patch; abdominal or peripheral vessel repair with a Gelsoft Cardiovascular Patch; or carotid endarterectomy with a Thin Wall Carotid Patch in the last 5 years and from study launch onwards.

    Device: Cardiovascular Patch

  • Gelweave - Abdominal, Thoracic, Thoracoabdominal

    Patients who, due to either aneurysmal or occlusive disease, have had/require vascular repair of one of the following, implanted in the last 5 years and from study launch onwards: * Abdominal aorta, arteries arising from the abdominal aorta or peripheral arteries including femoral, iliac and popliteal arteries. * Thoracic aorta or arteries arising from the thoracic aorta. * Abdominal and thoracic aorta requiring a thoracoabdominal repair

    Device: Gelweave Vascular Graft

  • Gelweave - Valsalva

    Patients who have had/require aortic root repair using valve sparing or valve replacing procedures, with or without replacement of the aortic arch, implanted in the last 5 years and from study launch onwards.

    Device: Gelweave Valsalva Vascular Graft

Interventions

  • DeviceGelsoft Plus Vascular Graft

    Gelatin coated, knitted vascular prosthesis implanted to act as a conduit for channeling blood during repair of damaged or diseased vessels.

    Also known as: Gelsoft Plus

  • DeviceVascular Bypass Graft

    Gelatin coated, knitted vascular prosthesis implanted to act as an extra-anatomical bypass for channeling blood during repair of damaged or diseased vessels.

    Also known as: Gelsoft Plus Extra Anatomical

  • DeviceCardiovascular Patch

    Cardiovascular knitted polyester patches are frequently used to treat the carotid or femoral arteries to prevent stroke and repair damage to vessels.

    Also known as: Gelseal Patch, Gelsoft Patch, Thinwall Patch, Cardiovascular Fabrics

  • DeviceGelweave Vascular Graft

    The Gelweave woven polyester vascular graft allows replacement of large sections of arteries and, following anastomosis to the native blood vessel, provides a stable conduit for blood flow.

    Also known as: Gelweave

  • DeviceGelweave Valsalva Vascular Graft

    This woven polyester graft is designed to match the aortic root anatomy and is implanted to repair or replace a portion of the aorta in case of an aneurysm, dissection or coarctation at the level of the thoracic aorta.

    Also known as: Gelweave Valsalva

06

What researchers measure

Primary outcomes

  1. Operative Death

    30 Day or In-Hospital Mortality

    Time frame: 1 Year

  2. Graft Leakage

    Device Failure: The presence of leakage or excessive bleeding through graft/patch

    Time frame: 1 Year

Secondary outcomes

  1. Device Endpoints

    Device failures, requirement for reintervention or device related adverse events

    Time frame: 1 Year

  2. Procedural Endpoints

    Rifampicin or heparin soaking, procedure related adverse events

    Time frame: 1 Year

  3. Safety Endpoints

    Occurrence of the following: Mortality, Ischemia, Occlusion, Thrombosis, Haemmorrhage, Rupture, Pseudoaneurysm, Stroke

    Time frame: 1 Year

07

Study locations

26 of 30 sites recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 20, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04545502
Lead sponsor
Vascutek Ltd.
Responsible party
Sponsor
First posted
Sep 11, 2020
Start date
Feb 17, 2021
Primary completion
Aug 2028 (estimated)
Completion
Jan 2037 (estimated)
Last update
Aug 20, 2026

Study contacts

Clinical Study Manager
Contact
r.smith1@terumoaortic.com
+44 141 343 0194
TA UK Clinical Research
Contact
clinicalresearchuk@terumoaortic.com
+44 141 812 5555

Oversight

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

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion