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Vascular DiseasesRAPNCT03953547

Antiplatelet Resistance Research in Patients With Peripheral Arterial Revascularization

An observational study of Vascular Diseases, run by Fondation Hôpital Saint-Joseph at 1 site in France.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

In coronary pathology, persistent platelet hyperresponsiveness under antiplatelet therapy, which is often referred to as "antiplatelet resistance," is predictive of increased risk of thrombotic recurrence as well as hyper-Inhibition of this aggregation may be predictive of a hemorrhagic risk. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Vascular Diseases
How many people
88 participants
Where
1 siteFrance
Study dates
1 Jan 2018to 31 Mar 2018
Phase
Observational
Are there results?
None posted in the registry

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: Patients who were hospitalized in the vascular medicine department and who received a search for antiplatelet resistance between April 2014 and November 2017.

Who may be able to join

  • Patients older than 18 years
  • All patients who were hospitalized in the vascular medicine department and who received a search for antiplatelet resistance between April 2014 and November 2017.

Who cannot join

  • Opposition to participation in the study
  • Absence of follow-up after antiplatelet resistance testing

Trial locations and contacts

1 site in 1 country.

France1 site

  • Groupe Hospitalier Paris Saint Joseph

    Paris, Île-de-France Region, 75014

Other trials in France

About this study

In coronary pathology, persistent platelet hyperresponsiveness under antiplatelet therapy, which is often referred to as "antiplatelet resistance," is predictive of increased risk of thrombotic recurrence as well as hyper-Inhibition of this aggregation may be predictive of a hemorrhagic risk. But no study has shown that the adaptation of treatment based on platelet aggregation tests has a benefit: the management of antiplatelet treatments through the search for antiplatelet resistance (APR) is not recommended by the European Society of Cardiology (ESC) in the context of coronary angioplasty (IIIA), while this is a common practice in neurovascular pathology.

Read the detailed description

In peripheral arterial disease, several studies have shown that the existence of an APR is predictive of the occurrence of thrombotic events but not all. The investigators can therefore ask the question of the benefit of adaptation of antiplatelet therapy by biological monitoring to prevent the recurrence of thrombotic events. The platelet aggregation tests used mainly concern aspirin, via stimulation with arachidonic acid, or anti-P2Y12 (clopidogrel, ticagrelor, prasugrel), via stimulation with adenosine diphosphate (ADP). For the latter, a test via the measurement of the phosphorylation of a cytoplasmic protein called "VASP" is also used routinely, making it possible to further clarify the existence of platelet resistance to anti-P2Y12. Within the vascular medicine department, any discovery of a potential resistance to the anti-platelet treatment of a patient requires a therapeutic adaptation to overcome this phenomenon of "resistance", and to improve the phenomenon of anti-aggregation

Keywords
antiplatelet resistance, peripheral arterial revascularization
Medical subject headings
Vascular Diseases

What participants receive

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

Study groups in NCT03953547
Study groupRoleWhat they receive
search for antiplatelet resistancePatients who were hospitalized in the vascular medicine department and who benefited from a search for antiplatelet resistance between April 2014 and November 2017.

What is being measured

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

  1. Number of re-occlusion of the revascularization procedure

    Measured: 1 year

Secondary outcomes (1)

  1. Number of cardiovascular events

    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 posted16 May 2019
  2. Study start1 Jan 2018
  3. Primary completion1 Mar 2018
  4. Study completion31 Mar 2018

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
Cohort
Time perspective
Retrospective
Enrolment
88 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03953547
Sponsor's protocol ID
RAP
Acronym
RAP
Status last verified
Aug 2018
First submitted
15 May 2019
Last updated
21 May 2019
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Siller-Matula JM, Delle-Karth G, Lang IM, Neunteufl T, Kozinski M, Kubica J, Maurer G, Linkowska K, Grzybowski T, Huber K, Jilma B. Phenotyping vs. genotyping for prediction of clopidogrel efficacy and safety: the PEGASUS-PCI study. J Thromb Haemost. 2012 Apr;10(4):529-42. doi: 10.1111/j.1538-7836.2012.04639.x.

    PubMed 22260716

  • Pinto Slottow TL, Bonello L, Gavini R, Beauzile P, Sushinsky SJ, Scheinowitz M, Kaneshige K, Xue Z, Torguson R, Tantry U, Pichard AD, Satler LF, Suddath WO, Kent K, Gurbel P, Waksman R. Prevalence of aspirin and clopidogrel resistance among patients with and without drug-eluting stent thrombosis. Am J Cardiol. 2009 Aug 15;104(4):525-30. doi: 10.1016/j.amjcard.2009.04.015. Epub 2009 Jun 24.

    PubMed 19660606

  • Valgimigli M, Bueno H, Byrne RA, Collet JP, Costa F, Jeppsson A, Juni P, Kastrati A, Kolh P, Mauri L, Montalescot G, Neumann FJ, Petricevic M, Roffi M, Steg PG, Windecker S, Zamorano JL, Levine GN; ESC Scientific Document Group; ESC Committee for Practice Guidelines (CPG); ESC National Cardiac Societies. 2017 ESC focused update on dual antiplatelet therapy in coronary artery disease developed in collaboration with EACTS: The Task Force for dual antiplatelet therapy in coronary artery disease of the European Society of Cardiology (ESC) and of the European Association for Cardio-Thoracic Surgery (EACTS). Eur Heart J. 2018 Jan 14;39(3):213-260. doi: 10.1093/eurheartj/ehx419. No abstract available.

    PubMed 28886622

  • Gupta R, Moore JM, Griessenauer CJ, Adeeb N, Patel AS, Youn R, Poliskey K, Thomas AJ, Ogilvy CS. Assessment of Dual-Antiplatelet Regimen for Pipeline Embolization Device Placement: A Survey of Major Academic Neurovascular Centers in the United States. World Neurosurg. 2016 Dec;96:285-292. doi: 10.1016/j.wneu.2016.09.013. Epub 2016 Sep 15.

    PubMed 27641263

  • Mazur P, Frolow M, Nizankowski R, Sadowski J, Undas A. Impaired responsiveness to clopidogrel and aspirin in patients with recurrent stent thrombosis following percutaneous intervention for peripheral artery disease. Platelets. 2013;24(2):151-5. doi: 10.3109/09537104.2012.676220. Epub 2012 Apr 13.

    PubMed 22497730

  • Mueller MR, Salat A, Stangl P, Murabito M, Pulaki S, Boehm D, Koppensteiner R, Ergun E, Mittlboeck M, Schreiner W, Losert U, Wolner E. Variable platelet response to low-dose ASA and the risk of limb deterioration in patients submitted to peripheral arterial angioplasty. Thromb Haemost. 1997 Sep;78(3):1003-7.

    PubMed 9308744

  • Kasotakis G, Pipinos II, Lynch TG. Current evidence and clinical implications of aspirin resistance. J Vasc Surg. 2009 Dec;50(6):1500-10. doi: 10.1016/j.jvs.2009.06.023. Epub 2009 Aug 12.

    PubMed 19679423

  • Doly JS, Lorian E, Desormais I, Constans J, Bura Riviere A, Lacroix P. [Prevalence and prognosis of aspirin resistance in critical limb ischemia patients]. J Mal Vasc. 2016 Dec;41(6):358-364. doi: 10.1016/j.jmv.2016.08.004. Epub 2016 Oct 14. French.

    PubMed 27745943

  • Navarese EP, Wernly B, Lichtenauer M, Petrescu AM, Kolodziejczak M, Lauten A, Frediani L, Veulemanns V, Wanha W, Wojakowski W, Lesiak M, Ferrante G, Zeus T, Tantry U, Bliden K, Buffon A, Contegiacomo G, Jung C, Kubica J, Pestrichella V, Gurbel PA. Dual vs single antiplatelet therapy in patients with lower extremity peripheral artery disease - A meta-analysis. Int J Cardiol. 2018 Oct 15;269:292-297. doi: 10.1016/j.ijcard.2018.07.009. Epub 2018 Jul 3.

    PubMed 30045826

  • Soden PA, Zettervall SL, Ultee KH, Landon BE, O'Malley AJ, Goodney PP, DeMartino RR, Arya S, Schermerhorn ML; Society for Vascular Surgery Vascular Quality Initiative. Dual antiplatelet therapy is associated with prolonged survival after lower extremity revascularization. J Vasc Surg. 2016 Dec;64(6):1633-1644.e1. doi: 10.1016/j.jvs.2016.05.098. Epub 2016 Aug 27.

    PubMed 27575814

Questions about this trial

What is this clinical trial studying?

An observational study of Vascular Diseases, run by Fondation Hôpital Saint-Joseph at 1 site in France.

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 2 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: finished, as of the sponsor's last update on 21 May 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in France. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of re-occlusion of the revascularization procedure (time frame: 1 year). 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 NCT03953547, which also lists 10 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 21 May 2019.

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