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AzTrials

Cerebral AneurysmpSPAIN_HPCNCT06201598

Prospective, Single-Arm, Multicenter Study to Evaluate the Effectiveness and Safety of Endovascular Treatment in Patients With Cerebral Aneurysms Using P64 and P48 Flow-Diverter Stents

An observational study of Cerebral Aneurysm and Thromboembolic Disease, run by Hospital Universitario Central de Asturias at 11 sites in Spain.

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 use of flow-diverting stents for the endovascular treatment of cerebral aneurysms has proven to be effective and efficient in several clinical studies, leading to its widespread adoption. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Cerebral Aneurysm, Thromboembolic Disease
What is being tested?
Group 1 - Intervention 1
Type of treatment
Medical device
How many people
100 participants
Where
11 sitesSpain
Study dates
12 Jan 2024to 15 Dec 2025
Phase
Observational
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 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: The study will include all patients with intracranial aneurysms or dissections suitable for endovascular treatment with a flow-diverting device, who attend the participating hospitals.

Who may be able to join

  • Patients over 18 years old with incidental, symptomatic, and/or ruptured cerebral aneurysms.
  • Signed informed consent by the patient or their representative.

Who cannot join

  • Patients under 18 years of age.
  • Absence of signed informed consent by the patient or their representative.
  • Known, medically untreatable allergy to iodinated contrast.
  • Pregnant women or those breastfeeding.

Trial locations and contacts

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

PEDRO VEGA VALDES, MD, PhD contact

0034985108000 ext. 39116

peveval@yahoo.es

11 sites in 1 country

Spain11 sites, 11 recruiting
  • Hospital Universitario de A Coruña

    A Coruña, 15006

    Recruiting
  • Hospital Universitari Germans Trias I Pujol

    Badalona, 08916

    Recruiting
  • Hospital Universitari Vall D Hebron

    Barcelona, 08035

    Recruiting
  • Hospital Universitario de Burgos

    Burgos, 09006

    Recruiting
  • Hospital Universitario de Donostia

    Donostia / San Sebastian, 20014

    Recruiting
  • Hospital Universitario La Paz

    Madrid, 28046

    Recruiting
  • Hospital Regional Universitario de Malaga

    Málaga, 29010

    Recruiting
  • Hospital Universitario Central de Asturias

    Oviedo, 33006

    Recruiting
  • Hospital Parc Tauli

    Sabadell, 08208

    Recruiting
  • Hospital Clínico Universitario de Valladolid

    Valladolid, 47003

    Recruiting
  • Hospital Universitario Miguel Servet

    Zaragoza, 50009

    Recruiting

Other trials in Spain

About this study

The use of flow-diverting stents for the endovascular treatment of cerebral aneurysms has proven to be effective and efficient in several clinical studies, leading to its widespread adoption. Devices with a higher number of filaments have a greater flow-diverting effect and less variation when there are changes in the caliber of the underlying vessel or in curved vessels. However, ischemic complications secondary to their implantation have been reported, prompting the development of various strategies to reduce their thrombogenicity. Phenox is the only company to date that has developed an anti-thrombogenic coating, known as HPC (Hydrophilic Polymer Coating), which, when applied to the p64 MW HPC and p48 MW HPC devices, has shown to reduce the likelihood of thromboembolic complications associated with their implantation.

Read the detailed description

The goal of this study is to evaluate the effectiveness and safety of endovascular treatment for cerebral aneurysms using the flow-diverting stents p64MW (flow modulation device) HPC and p48MW HPC in the routine clinical practice of several Spanish hospitals. It is therefore an observational study, carried out with devices already commercialized. The success rate of the intervention, the rate of hemorrhagic and thromboembolic complications, as well as variables related to the clinical and radiological follow-up of patients over a 12-month period, will be analyzed.

Being tested
Group 1 - Intervention 1
Keywords
Cerebral aneurysm, Flow-diverting stents, Thrombogenicity, p64 MW HPC, p48 MW HPC
Medical subject headings
Intracranial Aneurysm, Thromboembolism

What participants receive

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

  • Group 1 - Intervention 1Device

    Endovascular treatment of cerebral aneurysms through the implantation of p64MW HPC and p48MW HPC devices.

Study groups in NCT06201598
Study groupRoleWhat they receive
Patients treated with p64MW HPC and p48MW HPCPatients with intracranial aneurysms or dissections undergoing endovascular treatment with p64MW HPC and p48MW HPC flow-diverting devices.
Receives: Device: Group 1 - Intervention 1

What is being measured

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

  1. Effectiveness objective

    Evaluation of the effectiveness of treating cerebral aneurysms with p64MW HPC and p48MW HPC devices in several Spanish hospitals.

    Measured: 1 year

  2. Safety Objective

    Evaluation of the safety of treating cerebral aneurysms with p64MW HPC and p48MW HPC devices in several Spanish hospitals.

    Measured: 1 year

Secondary outcomes (10)
  1. Intervention success

    Rate of the ability to position the stent in the indicated location.

    Measured: During the procedure

  2. Thromboembolic complications

    Rate of cerebral thromboembolic complications during the intervention and during patient follow-up.

    Measured: 1 year

  3. Hemorrhagic complications

    Rate of cerebral and systemic hemorrhagic complications during the intervention and during patient follow-up.

    Measured: 1 year

  4. Mortality

    Mortality rate during patient follow-up.

    Measured: 1 year

  5. Clinical evolution of the patient using the National Institutes of Health Stroke Scale (NIHSS) and the Modified Rankin Scale (MRS).

    NIHSS at 24 hours and at discharge (range 0-42, with higher scores indicating greater stroke severity).

    MRS at 24 hours, at discharge, at 4-6 months and 12 months post-treatment (range 0-6, from no symptoms to dead, for the evaluation of neurological functional disability).

    Measured: 1 year

  6. Intimal hyperplasia

    Rate of intimal hyperplasia within the stent leading to a luminal stenosis of over 50%, assessed through digital angiography at 4-6 months and 12 months post-treatment.

    Measured: 1 year

  7. Thromboembolic complications with a single antiplatelet drug

    Rate of thromboembolic complications during the intervention and patient follow-up in cases where a single antiplatelet drug is administered.

    Measured: 1 year

  8. Intimal hyperplasia with a single antiplatelet drug

    Rate of intimal hyperplasia within the stent leading to a luminal stenosis of over 50% in cases where a single antiplatelet drug is administered, assessed through digital angiography at 4-6 months and 12 months post-treatment.

    Measured: 1 year

  9. Visible ischemic complications

    Rate of visible ischemic complications in MRI during patient follow-up (4-6 months).

    Measured: 6 months

  10. Aneurysm occlusion

    Aneurysm occlusion rate assessed through digital angiography at 6 and 12 months post-intervention, according to the O'Kelly-Marotta (OKM) occlusion scale.

    Measured: 1 year

Timeline

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

  1. First posted11 Jan 2024
  2. Study start12 Jan 2024
  3. Primary completion15 Dec 2025 (estimated)
  4. Study completion15 Dec 2025 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case only
Time perspective
Prospective
Enrolment
100 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06201598
Sponsor's protocol ID
2023.014
Acronym
pSPAIN_HPC
Status last verified
Nov 2024
First submitted
15 Dec 2023
Last updated
22 Nov 2024
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Kallmes DF, Ding YH, Dai D, Kadirvel R, Lewis DA, Cloft HJ. A new endoluminal, flow-disrupting device for treatment of saccular aneurysms. Stroke. 2007 Aug;38(8):2346-52. doi: 10.1161/STROKEAHA.106.479576. Epub 2007 Jul 5.

    PubMed 17615366
  • Kadirvel R, Ding YH, Dai D, Rezek I, Lewis DA, Kallmes DF. Cellular mechanisms of aneurysm occlusion after treatment with a flow diverter. Radiology. 2014 Feb;270(2):394-9. doi: 10.1148/radiol.13130796. Epub 2013 Oct 28.

    PubMed 24086073
  • Cancelliere NM, Nicholson P, Radovanovic I, Mendes KM, Orru E, Krings T, Pereira VM. Comparison of intra-aneurysmal flow modification using optical flow imaging to evaluate the performance of Evolve and Pipeline flow diverting stents. J Neurointerv Surg. 2020 Aug;12(8):814-817. doi: 10.1136/neurintsurg-2019-015696. Epub 2020 Apr 21.

    PubMed 32317371
  • Shapiro M, Raz E, Becske T, Nelson PK. Variable porosity of the pipeline embolization device in straight and curved vessels: a guide for optimal deployment strategy. AJNR Am J Neuroradiol. 2014 Apr;35(4):727-33. doi: 10.3174/ajnr.A3742. Epub 2013 Sep 26.

    PubMed 24072622
  • Briganti F, Leone G, Marseglia M, Cicala D, Caranci F, Maiuri F. p64 Flow Modulation Device in the treatment of intracranial aneurysms: initial experience and technical aspects. J Neurointerv Surg. 2016 Feb;8(2):173-80. doi: 10.1136/neurintsurg-2015-011743. Epub 2015 Apr 20.

    PubMed 25895510
  • Fischer S, Aguilar-Perez M, Henkes E, Kurre W, Ganslandt O, Bazner H, Henkes H. Initial Experience with p64: A Novel Mechanically Detachable Flow Diverter for the Treatment of Intracranial Saccular Sidewall Aneurysms. AJNR Am J Neuroradiol. 2015 Nov;36(11):2082-9. doi: 10.3174/ajnr.A4420. Epub 2015 Aug 13.

    PubMed 26272970
  • Morais R, Mine B, Bruyere PJ, Naeije G, Lubicz B. Endovascular treatment of intracranial aneurysms with the p64 flow diverter stent: mid-term results in 35 patients with 41 intracranial aneurysms. Neuroradiology. 2017 Mar;59(3):263-269. doi: 10.1007/s00234-017-1786-2. Epub 2017 Feb 24.

    PubMed 28236050
  • Briganti F, Leone G, Ugga L, Marseglia M, Macera A, Manto A, Delehaye L, Resta M, Resta M, Burdi N, Nuzzi NP, Divenuto I, Caranci F, Muto M, Solari D, Cappabianca P, Maiuri F. Mid-term and long-term follow-up of intracranial aneurysms treated by the p64 Flow Modulation Device: a multicenter experience. J Neurointerv Surg. 2017 Jan;9(1):70-76. doi: 10.1136/neurintsurg-2016-012502. Epub 2016 Jul 20.

    PubMed 27439887
  • Aguilar Perez M, Henkes E, Hellstern V, Serna Candel C, Wendl C, Bazner H, Ganslandt O, Henkes H. Endovascular Treatment of Anterior Circulation Aneurysms With the p64 Flow Modulation Device: Mid- and Long-Term Results in 617 Aneurysms From a Single Center. Oper Neurosurg. 2021 Mar 15;20(4):355-363. doi: 10.1093/ons/opaa425.

    PubMed 33469666
  • De Beule T, Boulanger T, Heye S, van Rooij WJ, van Zwam WH, Stockx L. p64 flow diverter: Results in 108 patients from a single center. Interv Neuroradiol. 2021 Feb;27(1):51-59. doi: 10.1177/1591019920932048. Epub 2020 Jun 6.

    PubMed 32506988
  • Aguilar Perez M, Bhogal P, Henkes E, Ganslandt O, Bazner H, Henkes H. In-stent Stenosis after p64 Flow Diverter Treatment. Clin Neuroradiol. 2018 Dec;28(4):563-568. doi: 10.1007/s00062-017-0591-y. Epub 2017 May 9.

    PubMed 28488025
  • Sirakov S, Sirakov A, Bhogal P, Penkov M, Minkin K, Ninov K, Hristov H, Karakostov V, Raychev R. The p64 Flow Diverter-Mid-term and Long-term Results from a Single Center. Clin Neuroradiol. 2020 Sep;30(3):471-480. doi: 10.1007/s00062-019-00823-y. Epub 2019 Aug 9.

    PubMed 31399749
  • Bonafe A, Perez MA, Henkes H, Lylyk P, Bleise C, Gascou G, Sirakov S, Sirakov A, Stockx L, Turjman F, Petrov A, Roth C, Narata AP, Barreau X, Loehr C, Berlis A, Pierot L, Mis M, Goddard T, Clifton A, Klisch J, Walesa C, Dall'Olio M, Spelle L, Clarencon F, Yakovlev S, Keston P, Nuzzi NP, Dima S, Wendl C, Willems T, Schramm P. Diversion-p64: results from an international, prospective, multicenter, single-arm post-market study to assess the safety and effectiveness of the p64 flow modulation device. J Neurointerv Surg. 2022 Sep;14(9):898-903. doi: 10.1136/neurintsurg-2021-017809. Epub 2021 Nov 15.

    PubMed 34782399
  • Tonetti DA, Jankowitz BT, Gross BA. Antiplatelet Therapy in Flow Diversion. Neurosurgery. 2020 Jan 1;86(Suppl 1):S47-S52. doi: 10.1093/neuros/nyz391.

    PubMed 31838537
  • Lenz-Habijan T, Bhogal P, Peters M, Bufe A, Martinez Moreno R, Bannewitz C, Monstadt H, Henkes H. Hydrophilic Stent Coating Inhibits Platelet Adhesion on Stent Surfaces: Initial Results In Vitro. Cardiovasc Intervent Radiol. 2018 Nov;41(11):1779-1785. doi: 10.1007/s00270-018-2036-7. Epub 2018 Jul 23.

    PubMed 30039502

Questions about this trial

What is this clinical trial studying?

An observational study of Cerebral Aneurysm and Thromboembolic Disease, run by Hospital Universitario Central de Asturias at 11 sites in Spain.

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 2 inclusion and 4 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 22 Nov 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 11 sites in Spain. 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 PEDRO VEGA VALDES, MD, PhD (0034985108000 ext. 39116, peveval@yahoo.es), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Effectiveness objective (time frame: 1 year). 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?

On the ClinicalTrials.gov record for NCT06201598, which also lists 16 linked publications.

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 22 Nov 2024.

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