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Trial registered on ANZCTR
Registration number
ACTRN12614000189628
Ethics application status
Approved
Date submitted
31/01/2014
Date registered
21/02/2014
Date last updated
24/04/2015
Type of registration
Prospectively registered
Titles & IDs
Public title
Comparison of the effect of an anti-platelet intervention with Ticagrelor versus placebo on participants with asymptomatic elevations in troponin T
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Scientific title
Comparison of the effect of an anti-platelet approach with Ticagrelor versus placebo on asymptomatic elevations in troponin T
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Secondary ID [1]
284019
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The Asymptomatic HS-Troponin Study
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Asymptomatic elevated troponin
291057
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Condition category
Condition code
Cardiovascular
291400
291400
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0
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Coronary heart disease
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Half the patients will take Ticagrelor 90mg twice daily, orally for 12 months. Each patient will be given enough supply until there next appointment, where by they will be asked to return the unused supply before receiving their next supply. At this point the returned bottles will be checked to confirm their self administration of medication correctly.
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Intervention code [1]
288705
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Treatment: Drugs
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Intervention code [2]
288820
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Prevention
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Comparator / control treatment
Half the patients will take placebo twice daily, orally for 12 months.
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Control group
Placebo
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Outcomes
Primary outcome [1]
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The primary outcome will be the change in troponin T level compared with baseline as measured by the Roche Elecsys high-sensitivity troponin assay.
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Assessment method [1]
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Timepoint [1]
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6 months after randomisation.
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Secondary outcome [1]
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Change in troponin T level compared with baseline as measured by the Roche high-sensitivity troponin assay.
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Assessment method [1]
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Timepoint [1]
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3 months after randomisation.
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Secondary outcome [2]
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Safety outcomes including significant bleeding using BARC primarily, plus GUSTO, TIMI and ACUITY definitions.
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Assessment method [2]
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Timepoint [2]
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3, 6, and 12 months after randomisation.
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Secondary outcome [3]
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Clinical outcomes including cardiovascular mortality, myocardial infarction using the Universal Definition of MI, and unplanned hospital admission for: non-elective coronary revascularisation (PCI or CABG), cerebrovascular accidents with cerebral imaging, atrial or ventricular arrhythmias, CCF without MI, and peripheral revascularisation as documented by a hospital discharge summary or diagnosis-related group report.
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Assessment method [3]
306660
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Timepoint [3]
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Up to 12 months after randomisation.
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Eligibility
Key inclusion criteria
1. Patients discharged from the emergency department or from hospital without an Acute Coronary Syndrome diagnosis but with an elevated high sensitivity (HS) troponin T level 5-150pg/mL; and
2. At least one of the following high risk features:
-Diabetes: defined by current medical therapy for diabetes or an HbA1C of >6.5% within the last 6 months.
-Renal impairment: defined as a eGFR of 15-60ml/min/1.73m2 within the last 6 months
-Patients with an absolute risk of greater than 7.5% for a CVD over the next 5 years using a Framingham risk equation or the Australian Absolute risk calculator.
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Minimum age
18
Years
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Maximum age
85
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
1. Age >85 years.
2. Patients with indication for antiplatelet therapy: a) any prior history of acute coronary syndrome or stable angina with documented coronary stenosis >50% on coronary angiography or CT coronary angiography at any time in the past, b) any prior coronary revascularisation (CABG and PCI), c) documented peripheral vascular disease ie. a history of intermittent claudication or peripheral vascular intervention, d) any prior history of TIA or stroke.
3. Requirement for concomitant warfarin or other anticoagulant or antiplatelet therapy.
4. Unable to return for follow-up visits and repeat troponin assessment.
5. Increased risk of bleeding: anaemia with haemoglobin <10g/dl, active peptic ulcer disease, bleeding diathesis, elevated HAS-BLED Score greater than or equal to 3
6. Renal dysfunction with creatinine clearance of <15ml/min/1.73m2 using the MDRD equation
7. Known liver disease
8. Current haematological or solid organ malignancy including patients with less than 5 years of remission but excluding basal cell carcinoma
9. Pregnancy
10. Unwilling or unable to give informed consent.
11. Participation in another concurrent randomised clinical trial.
12. Life-expectancy less than 12 months.
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Study design
Purpose of the study
Prevention
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
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Who is / are masked / blinded?
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Intervention assignment
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Other design features
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Phase
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Stopped early
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Data analysis
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Reason for early stopping/withdrawal
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Date of first participant enrolment
Anticipated
14/03/2014
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Actual
5/12/2014
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Date of last participant enrolment
Anticipated
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Actual
17/12/2014
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
420
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
SA
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Recruitment hospital [1]
2028
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Flinders Medical Centre - Bedford Park
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Recruitment postcode(s) [1]
7730
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5042 - Bedford Park
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Funding & Sponsors
Funding source category [1]
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Commercial sector/Industry
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Name [1]
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AstraZeneca
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Address [1]
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5 Alma Road
North Ryde NSW 2113
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Country [1]
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Australia
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Primary sponsor type
Individual
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Name
Professor Derek Chew
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Address
Professor of Cardiology
Flinders University
Regional Director of Cardiology
Department of Cardiovascular Medicine
Southern Adelaide Local Health Network
Flinders Drive, Bedford Park
South Australia, 5042
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Country
Australia
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Secondary sponsor category [1]
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None
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Name [1]
287356
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Address [1]
287356
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Country [1]
287356
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
290497
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Southern Adelaide Clinical Human Research Ethics Committee
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Ethics committee address [1]
290497
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Research Ethics Office
The Flats, G5 - Rooms 3 and 4
Flinders Drive
Flinders Medical Centre
Bedford Park SA 5042
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Ethics committee country [1]
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Australia
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Date submitted for ethics approval [1]
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14/02/2014
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Approval date [1]
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23/04/2014
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Ethics approval number [1]
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88.14
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Summary
Brief summary
Within a 1:1 randomised trial, this study will compare the effect of an antiplatelet approach with Ticagrelor versus placebo on 3, 6, and 12 month high-sensitivity troponin levels. It will also explore the frequency of late cardiovascular events, and the impact of P2Y12 platelet inhibition versus placebo on late cardiovascular events, among patients with elevations in high-sensitivity troponin not attributable to other acute clinical diagnoses.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Prof Derek Chew
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Address
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Professor of Cardiology,
Flinders University,
Regional Director of Cardiology,
Department of Cardiovascular Medicine,
Southern Adelaide Local Health Network,
Flinders Drive, Bedford Park,
South Australia, 5042
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Country
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Australia
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Phone
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+618 8404 2001
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Fax
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+618 8404 2150
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Email
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[email protected]
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Contact person for public queries
Name
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Ms Josette Wood
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Address
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Cardiovascular Data Management,
South Australian Health and Medical Research Institute,
PO Box 11060,
Adelaide SA 5001
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Country
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Australia
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Phone
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+618 8128 4530
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Fax
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Email
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[email protected]
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Contact person for scientific queries
Name
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Prof Derek Chew
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Address
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Professor of Cardiology,
Flinders University,
Regional Director of Cardiology,
Department of Cardiovascular Medicine,
Southern Adelaide Local Health Network,
Flinders Drive, Bedford Park,
South Australia, 5042
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Country
45964
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Australia
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Phone
45964
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+618 8404 2001
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Fax
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+618 8404 2150
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Email
45964
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
Source
Title
Year of Publication
DOI
Embase
Cost effectiveness of high-sensitivity troponin compared to conventional troponin among patients presenting with undifferentiated chest pain: A trial based analysis.
2017
https://dx.doi.org/10.1016/j.ijcard.2017.02.141
N.B. These documents automatically identified may not have been verified by the study sponsor.
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