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Carotid StenosisPhase 2RevaceptCS02NCT01645306

Revacept in Symptomatic Carotid Stenosis

A Phase 2 study testing Revacept in people with Carotid Stenosis and Atherosclerosis, run by AdvanceCor GmbH at 12 sites in 2 countries.

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

Patients suffering from symptomatic carotid artery stenosis, transient ischemic attacks (TIAs), amaurosis fugax or stroke receive either Revacept (single dose) plus antiplatelet monotherapy or monotherapy alone. Patients receive a single dose of trial medication by intravenous infusion for 20 minutes. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Carotid Stenosis, Atherosclerosis, Stroke
What is being tested?
Revacept
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
158 participants
Where
12 sitesin 2 countries
Study dates
8 Mar 2013to 23 Sep 2019
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

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

Who may be able to join

  • Signed written informed consent
  • Target population
  • Diagnosis:
  • Extracranial carotid artery stenosis (diagnosed by vascular duplex ultrasound peak flow or angiography)
  • Lesions with ≥ 50 % stenosis according to the European Carotid Surgery Trial (ECST) criteria
  • TIA, amaurosis fugax or stroke within the last 30 days
  • Age and sex: Men and women aged > 18 years Women of childbearing potential (WOCBP) must be using an adequate method of contraception to avoid pregnancy throughout the study and for up to 4 weeks after receiving investigational product in such a manner that the risk of pregnancy is minimised.

Who cannot join

  • Sex and reproductive Status:
  • WOCBP who are unwilling or unable to use an acceptable method to avoid pregnancy for up to 4 weeks after receiving investigational product.
  • Women who are pregnant or breastfeeding
  • Women with a positive pregnancy test on enrollment or prior to investigational product administration.
  • Target disease exceptions
  • NIHSS score > 18
Show all 19Show fewer
  • Recent intracerebral haemorrhage by X-ray computed tomography (CT) or nuclear magnetic resonance (NMR)
  • Cardiac cause of embolisation (atrial fibrillation or other cardiac source e.g. artificial heart valves)
  • Medical history and concurrent disease
  • History of hypersensitivity, contraindication or serious adverse reaction to inhibitors of platelet aggregation, hypersensitivity to related drugs (cross-allergy) or to any of the excipients in the study drug
  • History or evidence of thrombocytopenia (<30.000/ul), bleeding diathesis or coagulopathy (pathological international normalised ratio (INR) or activated partial thromboplastin time (aPTT))
  • Thrombolysis within the last 48 hours
  • Relevant haemorrhagic transformation as determined by CT, NMR or anamnesis
  • Oral anticoagulation or dual anti-platelet therapy with aspirin or clopidogrel and other P2Y inhibitors at screening (3 days for dipyridamole extended release; 8 hours for tirofiban/Aggrastat)
  • Sustained hypertension (systolic BP > 179 mmHg or diastolic BP >109 mmHg)
  • History of severe systemic disease such as terminal carcinoma, renal failure (or current creatinine > 200 umol/l), cirrhosis, severe dementia, or psychosis
  • Current severe liver dysfunction (transaminase level greater than 5-fold over upper normal range limit)
  • Active autoimmune disorder such as systemic lupus erythematosus, rheumatoid arthritis, vasculitis or glomerulonephritis
  • Known atrial fibrillation or other clinically significant ECG abnormalities (at present)

Trial locations and contacts

12 sites in 2 countries.

12 sites in 2 countries

Germany8 sites
  • Site 08: Universitätsklinikum Essen, Klinik für Neurologie

    Essen, 45147

  • Site 11: Universitätsklinikum Hamburg Eppendorf

    Hamburg, 20246

  • Site 07: Medizinische Hochschule Hannover, Klinik für Neurologie

    Hanover, 30625

  • Site 12: Universitätsklinikum Leipzig AöR

    Leipzig, 04103

  • Site 09: Universitätsmedizin Mainz, Klinik und Poliklinik für Neurologie

    Mainz, 55131

  • Site 01: Department of Neurology, TU Munich

    Munich, Bavaria, 81675

  • Site 04: Universitätsklinikum Tübingen, Klinik für Allgemeine Neurologie

    Tübingen, 72076

  • Site 06: Universitätsklinikum Ulm, Abteilung für Neurologie

    Ulm, 89081

Other trials in Germany

United Kingdom4 sites
  • Site 23 - University Hospital Coventry NHS Trust

    Coventry, CV2 2DX

  • Site 26 - University College London Hospital

    London, NW1 2BU

  • Site 28 - King's College London Hospital

    London, SE5 8AF

  • Site 20: St George's NHS Trust

    London, SW17 0QT

Other trials in United Kingdom

About this study

Official title: Revacept, an Inhibitor of Platelet Adhesion in Symptomatic Carotid Stenosis: A Phase II, Multicentre; Randomised, Dose-finding, Double-blind and Placebo Controlled Superiority Study With Parallel Groups

Patients suffering from symptomatic carotid artery stenosis, transient ischemic attacks (TIAs), amaurosis fugax or stroke receive either Revacept (single dose) plus antiplatelet monotherapy or monotherapy alone.

Patients receive a single dose of trial medication by intravenous infusion for 20 minutes. Patients are followed up one and three days after treatment, at 3 months and by a telephone interview at 12 months.

Read the detailed description

Patients had a more than 50% carotid artery stenosis according to ECST and suffered from ischemic stroke, transitory ischemic attack or intermittent blindness (amaurosis fugax) within the last 30 days. All patients were on standard medication with aspirin or clopidogrel and received heparin for thrombosis prophylaxis. Carotid endarterectomy (CEA), carotid stenting (CAS) or best medical therapy for treatment of the carotid stenosis and prevention of secondary thrombo-emboli was performed according to guidelines. Additional treatment with Revacept or placebo was done on top of the standard therapy. Therefore the control group receiving placebo was already on the standard medical therapy for patients with symptomatic carotid stenosis and received also the guideline conform interventions CEA, CAS or best medical therapy.

Secondary prophylaxis of thrombo-embolic ischemic events by Revacept should be investigated. Therefore microemboli were detected by transcranial Doppler and ischemic brain lesions were investigated by diffusion weighted imaging magnetic resonance imaging (DWI-MRI) scan as exploratory endpoints. Moreover clinical endpoints such as stroke, TIA, myocardial infarction, coronary intervention and death were investigated at 1 week, 3 months and 12 months follow-up. Safety was closely monitored with emphasis on bleeding complications as bleeding is the most dreaded complication of anti-thrombotic agents especially in patients with cerebral strokes.

Being tested
Revacept, Placebo
Medical subject headings
Carotid Stenosis, Atherosclerosis, Stroke, Ischemic Attack, Transient, Amaurosis Fugax

What participants receive

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

  • RevaceptDrug

    Also called 40 mg or 120 mg

    single intravenous injection

  • PlaceboDrug

    Also called Control Group

    single intravenous injection

Study groups in NCT01645306
Study groupRoleWhat they receive
Phosphate buffered saline (PBS), 1% sucrose, 4% mannitolPlacebo comparatorPlacebo control with PBS, 1% sucrose and 4% mannitol
Receives: Drug: Placebo
40 mg RevaceptActive comparatorlow dose Revacept 40mg in PBS, 1% sucrose, 4% mannitol
Receives: Drug: Revacept
120 mg RevaceptActive comparatorhigh dose revacept 120mg in PBS, 1% sucrose, 4% mannitol
Receives: Drug: Revacept

What is being measured

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

  1. New DWI Lesion(s)

    The number of new diffusion weighted imaging (DWI) lesion(s) reported. (1 day after intervention compared to baseline).

    Measured: 1 day post intervention

Timeline

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

  1. First posted20 Jul 2012 (estimated)
  2. Study start8 Mar 2013
  3. Primary completion5 Oct 2018
  4. Study completion23 Sep 2019

Resources

More details

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

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
158 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01645306
Sponsor's protocol ID
Revacept/CS/02
Acronym
RevaceptCS02
Status last verified
Jan 2021
First submitted
16 Jul 2012
Last updated
28 Jan 2021
Data monitoring committee
Yes
Individual data sharing
No

Publications

  • Bultmann A, Li Z, Wagner S, Peluso M, Schonberger T, Weis C, Konrad I, Stellos K, Massberg S, Nieswandt B, Gawaz M, Ungerer M, Munch G. Impact of glycoprotein VI and platelet adhesion on atherosclerosis--a possible role of fibronectin. J Mol Cell Cardiol. 2010 Sep;49(3):532-42. doi: 10.1016/j.yjmcc.2010.04.009. Epub 2010 Apr 27.

    PubMed 20430036
  • Goertler M, Baeumer M, Kross R, Blaser T, Lutze G, Jost S, Wallesch CW. Rapid decline of cerebral microemboli of arterial origin after intravenous acetylsalicylic acid. Stroke. 1999 Jan;30(1):66-9. doi: 10.1161/01.str.30.1.66.

    PubMed 9880390
  • Markus HS, Droste DW, Kaps M, Larrue V, Lees KR, Siebler M, Ringelstein EB. Dual antiplatelet therapy with clopidogrel and aspirin in symptomatic carotid stenosis evaluated using doppler embolic signal detection: the Clopidogrel and Aspirin for Reduction of Emboli in Symptomatic Carotid Stenosis (CARESS) trial. Circulation. 2005 May 3;111(17):2233-40. doi: 10.1161/01.CIR.0000163561.90680.1C. Epub 2005 Apr 25.

    PubMed 15851601
  • Massberg S, Konrad I, Bultmann A, Schulz C, Munch G, Peluso M, Lorenz M, Schneider S, Besta F, Muller I, Hu B, Langer H, Kremmer E, Rudelius M, Heinzmann U, Ungerer M, Gawaz M. Soluble glycoprotein VI dimer inhibits platelet adhesion and aggregation to the injured vessel wall in vivo. FASEB J. 2004 Feb;18(2):397-9. doi: 10.1096/fj.03-0464fje. Epub 2003 Dec 4.

    PubMed 14656994
  • Molloy J, Markus HS. Asymptomatic embolization predicts stroke and TIA risk in patients with carotid artery stenosis. Stroke. 1999 Jul;30(7):1440-3. doi: 10.1161/01.str.30.7.1440.

    PubMed 10390320
  • Nieswandt B, Watson SP. Platelet-collagen interaction: is GPVI the central receptor? Blood. 2003 Jul 15;102(2):449-61. doi: 10.1182/blood-2002-12-3882. Epub 2003 Mar 20.

    PubMed 12649139
  • Ringelstein EB, Droste DW, Babikian VL, Evans DH, Grosset DG, Kaps M, Markus HS, Russell D, Siebler M. Consensus on microembolus detection by TCD. International Consensus Group on Microembolus Detection. Stroke. 1998 Mar;29(3):725-9. doi: 10.1161/01.str.29.3.725.

    PubMed 9506619
  • Schonberger T, Siegel-Axel D, Bussl R, Richter S, Judenhofer MS, Haubner R, Reischl G, Klingel K, Munch G, Seizer P, Pichler BJ, Gawaz M. The immunoadhesin glycoprotein VI-Fc regulates arterial remodelling after mechanical injury in ApoE-/- mice. Cardiovasc Res. 2008 Oct 1;80(1):131-7. doi: 10.1093/cvr/cvn169. Epub 2008 Jun 19.

    PubMed 18566102
  • Ungerer M, Rosport K, Bultmann A, Piechatzek R, Uhland K, Schlieper P, Gawaz M, Munch G. Novel antiplatelet drug revacept (Dimeric Glycoprotein VI-Fc) specifically and efficiently inhibited collagen-induced platelet aggregation without affecting general hemostasis in humans. Circulation. 2011 May 3;123(17):1891-9. doi: 10.1161/CIRCULATIONAHA.110.980623. Epub 2011 Apr 18.

    PubMed 21502572
  • Jamasbi J, Megens RT, Bianchini M, Munch G, Ungerer M, Faussner A, Sherman S, Walker A, Goyal P, Jung S, Brandl R, Weber C, Lorenz R, Farndale R, Elia N, Siess W. Differential Inhibition of Human Atherosclerotic Plaque-Induced Platelet Activation by Dimeric GPVI-Fc and Anti-GPVI Antibodies: Functional and Imaging Studies. J Am Coll Cardiol. 2015 Jun 9;65(22):2404-15. doi: 10.1016/j.jacc.2015.03.573.

    PubMed 26046734
  • Kleiman NS, Kolandaivelu K. Expanding the Roster: Developing New Inhibitors of Intravascular Thrombosis. J Am Coll Cardiol. 2015 Jun 9;65(22):2416-9. doi: 10.1016/j.jacc.2015.03.576. No abstract available.

    PubMed 26046735
  • Uphaus T, Richards T, Weimar C, Neugebauer H, Poli S, Weissenborn K, Imray C, Michalski D, Rashid H, Loftus I, Rummey C, Ritter M, Hauser TK, Munch G, Groschel K, Poppert H. Revacept, an Inhibitor of Platelet Adhesion in Symptomatic Carotid Stenosis: A Multicenter Randomized Phase II Trial. Stroke. 2022 Sep;53(9):2718-2729. doi: 10.1161/STROKEAHA.121.037006. Epub 2022 Jun 13.

    PubMed 35695006

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Revacept in people with Carotid Stenosis and Atherosclerosis, run by AdvanceCor GmbH at 12 sites in 2 countries.

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 7 inclusion and 19 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 28 Jan 2021. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 12 sites in Germany, United Kingdom. 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. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 28 Jan 2021). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

New DWI Lesion(s) (time frame: 1 day post intervention). 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 NCT01645306, which also lists 12 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 28 Jan 2021.

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