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Trial registered on ANZCTR

Registration number
Ethics application status
Date submitted
Date registered
Date last updated
Type of registration
Retrospectively registered

Titles & IDs
Public title
Intima-Media thickness guidance of Primary prevention in Relatives of individuals with Early onSet atherosclerosiS
Scientific title
Comparison of an individualised atherosclerosis-specific prevention program with usual care in those with close relatives who have suffered from premature cardiovascular disease
Secondary ID [1] 1503 0
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Atherosclerotic burden 256809 0
Condition category
Condition code
Cardiovascular 256959 256959 0 0
Diseases of the vasculature and circulation including the lymphatic system

Study type
Description of intervention(s) / exposure
Lifestyle intervention including the use of cardiovascular absolute risk and Australian Type 2 Diabetes Risk Assessment Tool (AUSDRISK) Scores, total cholesterol levels and carotid intima-media thickness measurements to direct an individual participant's health and lifestyle requirements for the reduction of atherosclerotic burden and cardiovascular risk profile. Overall, participants will be followed-up over a 36 month period and the intervention involves acting on the results of assessment of the following: physical examination, pathology testing, lifestyle and diet questions, an absolute cardiovascular risk profile, quality of life, mental health and functional capacity, the electrical signalling of the heart (electrocardiogram) and carotid intima-media thickness measurement. A self-care plan will be developed for those of higher need who will also have phone or email contact from a cardiac nurse at 1 month post-randomisation and a clinic visit at 3 months post-randomisation.

Additionally, those with a total cholesterol of >5.5mmoL/L or a carotid intima-media thickness greater than one standard deviation for their age will be prescribed 40mg per day of an oral statin for the duration of the study to further reduce their risk of experiencing a cardiovascular event.
Intervention code [1] 256014 0
Intervention code [2] 256097 0
Early detection / Screening
Comparator / control treatment
Usual care involving the usual care that the participant's physician provides for any required medical management or direction towards health prevention strategies. We will put no restrictions and make no suggestions as to these participant's management. As with any individual, medical management in this group will involve assessment on a case-by-case basis according to what is required.
Control group

Primary outcome [1] 257941 0
Change in common carotid intima-media thickness measurements
Timepoint [1] 257941 0
At baseline and at 18 months and three years post-randomisation
Secondary outcome [1] 263454 0
Change in plaque length in the carotid artery. Plaque length will be measured at the same time as carotid intima-media thickness via carotid ultrasound.
Timepoint [1] 263454 0
At baseline and at 18 months and three years post-randomisation
Secondary outcome [2] 263455 0
Change in internal carotid artery intima-media thickness measurement
Timepoint [2] 263455 0
At baseline and at 18 months and three years post-randomisation
Secondary outcome [3] 263456 0
Change in quality of life and general well-being (via the Short Form-12 [SF-12] and EuroQol 5-dimensions [EQ-5D] questionnaires).
Timepoint [3] 263456 0
At baseline and at 18 months and three years post-randomisation
Secondary outcome [4] 263457 0
Change in mental health (as determined by the Arrol questionnaire and the Centre for Epidemiological Studies Depression Scale [CESD] if the Arrol questionnaire is positive for identification of possible depression).
Timepoint [4] 263457 0
At baseline and at 18 months and three years post-randomisation
Secondary outcome [5] 263458 0
Difference in health care costs between usual care and intervention cohorts. This will be assessed through access of Medicare data for each participant throughout the life of the study. Costs of those in the intervention group will be compared with those in the usual care group.
Timepoint [5] 263458 0
From baseline to three years post-randomisation
Secondary outcome [6] 263459 0
Change in modifiable risk factors for atherosclerotic disease other than diabetes (i.e. smoking, dyslipidaemia, obesity and hypertension). This will be done by querying a participant's lifestyle and medical tests (for dyslipidaemia and hypertension) and follow-up of these results throughout the study (following education as to how to reduce these risk factors).
Timepoint [6] 263459 0
At baseline and at six months, 18 months and three years post-randomisation
Secondary outcome [7] 263460 0
Change in absolute cardiovascular risk profile and risk of diabetes (determined by the AUSDRISK Score)
Timepoint [7] 263460 0
At baseline and at three months, six months, 18 months and three years post-randomisation
Secondary outcome [8] 263461 0
All-cause mortality which will be assessed by accessing data from the National Death Index at the conclusion of the trial.
Timepoint [8] 263461 0
From baseline to three years post-randomisation
Secondary outcome [9] 263462 0
Cardiovascular hospitalisation which will be assessed by accessing a participant's medical records and obtaining Medicare data for each participant.
Timepoint [9] 263462 0
From baseline to three years post-randomisation

Key inclusion criteria
1. Have a first-degree relative (i.e. a mother, father, brother or sister) with premature (onset before 60 years) cardiovascular disease
2. Are classified as being at "intermediate risk" of experiencing a cardiovascular event in the next five years as determined by the Framingham Risk Equation
3. Are living independently in the community or in their own home
4. Are able and willing to provide written informed consent to participate
Minimum age
40 Years
Maximum age
65 Years
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
1. Have pre-existing atherosclerotic cardiovascular disease

2. Have Diabetes (any type)

3. Have contraindications to the use of statin medications

4. Unable to provide written informed consent to participate in this study

5. Have a terminal malignancy requiring palliative care, or a limited life expectancy or any other medical condition that results in the belief of the Chief Investigators that it is not appropriate for the patient to participate in this trial

Study design
Purpose of the study
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Central randomisation by telephone
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Permuted block randomisation with carotid intima-media thickness and total cholesterol level used for stratification
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?

Intervention assignment
Other design features
Not Applicable
Type of endpoint(s)
Statistical methods / analysis

Recruitment status
Date of first participant enrolment
Date of last participant enrolment
Date of last data collection
Sample size
Accrual to date
Recruitment in Australia
Recruitment state(s)
Recruitment hospital [1] 2068 0
The Alfred - Prahran
Recruitment hospital [2] 2069 0
Princess Alexandra Hospital - Woolloongabba
Recruitment hospital [3] 2070 0
The Canberra Hospital - Garran
Recruitment postcode(s) [1] 7765 0
3004 - Melbourne
Recruitment postcode(s) [2] 7766 0
4102 - Woolloongabba
Recruitment postcode(s) [3] 7767 0
2605 - Garran
Recruitment outside Australia
Country [1] 2494 0
State/province [1] 2494 0

Funding & Sponsors
Funding source category [1] 256590 0
Government body
Name [1] 256590 0
National Health and Medical Research Council (NHMRC) Program Grant
Address [1] 256590 0
Level 1
16 Marcus Clarke Street
Canberra, ACT 2601
Country [1] 256590 0
Primary sponsor type
University of Queensland- School of Medicine
Princess Alexandra Hospital
Ipswich Road
Woolloongabba, QLD 4102
Secondary sponsor category [1] 255884 0
Other Collaborative groups
Name [1] 255884 0
Baker IDI Heart & Diabetes Institute
Address [1] 255884 0
75 Commercial Road
Melbourne, VIC 3004
Country [1] 255884 0
Secondary sponsor category [2] 255885 0
Name [2] 255885 0
National University Health System
Address [2] 255885 0
5 Lower Kent Ridge Road
Singapore 119074
Country [2] 255885 0
Secondary sponsor category [3] 287406 0
Name [3] 287406 0
Australia National University
Address [3] 287406 0
Barry Dr, Acton
ACT 0200
Country [3] 287406 0

Ethics approval
Ethics application status
Ethics committee name [1] 258620 0
Metro South Health Service District Human Research Ethics Committee
Ethics committee address [1] 258620 0
Level 2, Building 35,
Princess Alexandra Hospital
Ipswich Road
Queensland 4102 Australia
Ethics committee country [1] 258620 0
Date submitted for ethics approval [1] 258620 0
Approval date [1] 258620 0
Ethics approval number [1] 258620 0
Ethics committee name [2] 258621 0
Alfred Hospital Ethics Committee
Ethics committee address [2] 258621 0
55 Commercial Road
PO Box 315 Prahran
Victoria 3181 Australia
Ethics committee country [2] 258621 0
Date submitted for ethics approval [2] 258621 0
Approval date [2] 258621 0
Ethics approval number [2] 258621 0
Project No: 16/10

Brief summary
This study will use carotid intima-media thickness, a marker of atherosclerosis, to address the unresolved issue about how to most efficiently manage intermediate risk subjects with a family history of premature atherosclerosis by combining better selection of such individuals for active treatment and recommended lifestyle changes with a disease management program strategy to optimise their successful application in the longer-term. Therefore, the study hypothesis is that in intermediate risk, first-degree relatives (mother, father, brother or sister) of individuals with premature atherosclerosis, a carotid intima-media thickness-targeted disease management program for primary prevention incorporating more intensive non-pharmacological and pharmacological management, provides better reduction of atherosclerotic burden than usual health care management during 36 months follow-up.
Trial website
Trial related presentations / publications
Public notes

Principal investigator
Name 30839 0
Prof Tom Marwick
Address 30839 0
Menzies Research Institute Tasmania
Private bag 23, Hobart
Tasmania 7000
Country 30839 0
Phone 30839 0
+613 6226 7703
Fax 30839 0
+613 6226 7704
Email 30839 0
Contact person for public queries
Name 14086 0
A/Prof Melinda Carrington
Address 14086 0
Mary MacKillop Institute for Health Research, Australian Catholic University
Level 5, 215 Spring St, Melbourne, VIC 3000
Country 14086 0
Phone 14086 0
Fax 14086 0
Email 14086 0
Contact person for scientific queries
Name 5014 0
A/Prof Melinda carrington
Address 5014 0
Mary MacKillop Institute for Health Research, Australian Catholic University
Level 5, 215 Spring St, Melbourne, VIC 3000
Country 5014 0
Phone 5014 0
Fax 5014 0
Email 5014 0

No information has been provided regarding IPD availability
Summary results
Have study results been published in a peer-reviewed journal?
Other publications
Have study results been made publicly available in another format?
Results – basic reporting
Results – plain English summary