EValuation Of poLygenic Scores and CT imAging In Risk Factor Modification in Patients With diabEtes

NCT ID: NCT07091162

Last Updated: 2025-07-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

90 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-07-25

Study Completion Date

2026-08-31

Brief Summary

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This study is a three-arm, parallel-group, randomised controlled trial evaluating the effect of using cardiac CT imaging or polygenic risk score in cardiovascular risk factor modification in patients with diabetes.

Detailed Description

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The contemporary management of type 2 diabetes (T2D) involves a multifaceted model of care integrating intensive management of lipids, blood pressure, and glucose, along with lifestyle modifications. Despite these efforts, cardiovascular disease (CVD) remains a leading cause of morbidity and mortality among patients with T2D, largely due to suboptimal adherence to preventive strategies. The VOLTAIRE trial aims to assess the impact of providing personalised cardiovascular risk information derived from computed tomography coronary angiography (CTCA) and a polygenic risk score (PRS) on cardiovascular risk factor modification.

VOLTAIRE evaluates whether integrating CTCA and PRS into risk counselling enhances adherence to lifestyle and pharmacological interventions, ultimately improving cardiovascular outcomes among patients with T2D.

VOLTAIRE is a prospective three-arm, parallel-group, randomised controlled trial aiming to enrol 90 participants aged 40 years or older with T2D and no established atherosclerotic CVD. Participants will be randomised 1:1:1 to receive: (1) risk factor counselling plus CTCA result, (2) risk factor counselling plus PRS result or (3) standard risk factor counselling (control). Nurse-led motivational interviewing will be used for risk counselling. The primary outcome is change in non-calcified plaque volume measured by serial CTCA at 12 months. Secondary outcomes include low-density lipoprotein cholesterol levels, adherence to medication, patient engagement, CVD knowledge improvements, and psychological outcomes over 12 months.

VOLTAIRE seeks to determine if coupling nurse-led risk factor counselling with personalised CTCA or PRS information improves cardiovascular outcomes, adherence, and participant engagement in T2D management.

Conditions

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Cardiovascular Diseases Type 2 Diabetes Mellitus (T2DM)

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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1. CTCA group

Participants receive baseline CTCA results, in addition to standard care

Group Type ACTIVE_COMPARATOR

CTCA results

Intervention Type OTHER

Participants who are assigned to CTCA group will receive their CTCA results

2. PRS group

Participants receive polygenic risk score result, in addition to standard care

Group Type ACTIVE_COMPARATOR

PRS results

Intervention Type OTHER

Participants who are assigned to PRS group will receive their PRS results

3. Control group

Participants receive standard care only with no additional information

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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CTCA results

Participants who are assigned to CTCA group will receive their CTCA results

Intervention Type OTHER

PRS results

Participants who are assigned to PRS group will receive their PRS results

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Age 40 years or older
* Established diagnosis of T2DM
* Having acceptable imaging quality as deemed by the VHI-AICL
* Able to have a PRS calculated

Exclusion Criteria

* Unable to provide written informed consent.
* Unwilling to be followed for serial evaluation
* Clinically manifest CV disease
* Evidence of clinically significant coronary disease on CT that would preclude masking from participant's treating clinician for the duration of the study on the grounds of safety, including but not limited to, equal/greater than 50% in the left main coronary artery or equal/greater than 70% in any epicardial coronary artery
* Unable to participate in the study or complete protocol required assessments in the opinion of the Investigator
Minimum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Monash University

OTHER

Sponsor Role lead

Responsible Party

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Stephen Nicholls

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Stephen J Nicholls, MBBS, PhD

Role: PRINCIPAL_INVESTIGATOR

Monash University

Locations

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Victorian Heart Hospital

Melbourne, Victoria, Australia

Site Status RECRUITING

Countries

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Australia

Central Contacts

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Domenic Sacca

Role: CONTACT

0423245187

Facility Contacts

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Mary-Anne Austin

Role: primary

+61 3 7511 1243

Other Identifiers

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VOLTAIRE-1

Identifier Type: -

Identifier Source: org_study_id

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