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
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Group 1 - Intervention 1.
- Who it may be relevant to
- Registry conditions: Cerebral Aneurysm, Thromboembolic Disease. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Spain
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Overview
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.
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.
Interventions
- Device Group 1 - Intervention 1
Endovascular treatment of cerebral aneurysms through the implantation of p64MW HPC and p48MW HPC devices.
Primary outcome measures
- Effectiveness objective [Time frame: 1 year]
- Safety Objective [Time frame: 1 year]
Secondary outcome measures (10)
- Intervention success [Time frame: During the procedure]
- Thromboembolic complications [Time frame: 1 year]
- Hemorrhagic complications [Time frame: 1 year]
- Mortality [Time frame: 1 year]
- Clinical evolution of the patient using the National Institutes of Health Stroke Scale (NIHSS) and the Modified Rankin Scale (MRS). [Time frame: 1 year]
- Intimal hyperplasia [Time frame: 1 year]
- Thromboembolic complications with a single antiplatelet drug [Time frame: 1 year]
- Intimal hyperplasia with a single antiplatelet drug [Time frame: 1 year]
- Visible ischemic complications [Time frame: 6 months]
- Aneurysm occlusion [Time frame: 1 year]
Eligibility criteria
Inclusion criteria
- Patients over 18 years old with incidental, symptomatic, and/or ruptured cerebral aneurysms.
- Signed informed consent by the patient or their representative.
Exclusion criteria
- 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.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Observational model
- Case-only
Study locations
Spain · 11 centers
- Hospital Universitario de A Coruña — A Coruña
- Hospital Universitari Germans Trias I Pujol — Badalona
- Hospital Universitari Vall D Hebron — Barcelona
- Hospital Universitario de Burgos — Burgos
- Hospital Universitario de Donostia — Donostia / San Sebastian
- Hospital Universitario La Paz — Madrid
- Hospital Regional Universitario de Malaga — Málaga
- Hospital Universitario Central de Asturias — Oviedo
- … and 3 more centers
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. PMID 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. PMID 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. PMID 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. PMID 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. PMID 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. PMID 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. PMID 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. PMID 27439887
Identifiers
NCT: NCT06201598 · 2023.014