WARRIOR Ancillary Study for CCTA Analysis

Effect of Intensive Medical Treatment on Quantified Coronary Artery Plaque Components With Serial Coronary CTA in Women With NonObstructive CAD

In this study, quantitative characterization of plaque using coronary computed tomographic angiography (CTA) will be used to determine if women who were treated with intensive medical therapy have a greater reduction in the amount and type of cholesterol plaque compared to women receiving usual care and if this results in beneficial changes in clinical symptoms. The study will provide an understanding of how intensive medical therapy works in providing clinical benefit in women with nonobstructive plaque.

Study Overview

• Status: Recruiting
• Conditions: Ischemia; Coronary Artery Disease; Non-Obstructive Coronary Atherosclerosis

Detailed Description

This is an ancillary substudy of the WARRIOR Trial (NCT03417388), a multi-site, PROBE design, that will evaluate an intensive statin/ACE-I (or ARB)/aspirin treatment strategy (IMT) vs. primary prevention risk factor therapy treatment strategy (UC) in 4,422 symptomatic (chronic angina or equivalent) women with non-obstructive CAD (<50% diameter narrowing).

In this ancillary substudy, 204 patients will be recruited from the WARRIOR trial with 102 patients from each of the treatment groups (IMT vs UC). From this cohort, 102 patients per treatment group, most compliant with WARRIOR protocol will undergo a CTA from any time from 2 years post-baseline up to the end of the main WARRIOR study; with changes in plaque and PCAT characteristics quantified.

The main aims are as follows:

1. To compare changes in coronary plaque characteristics and their hemodynamic significance using CTA in WARRIOR women treated with IMT vs UC;
2. To compare changes in plaque inflammation-related characteristics in PCAT in WARRIOR women treated with IMT with statin in combination with angiotensin converting enzyme inhibitor (ACEI) and/or angiotensin receptor blocker (ARB) medications vs UC;
3. To relate plaque burden and plaque composition, CT flow reserve, and PCAT density changes to angina score (Seattle Angina Questionnaire [SAQ]) changes in IMT and UC-randomized WARRIOR women.

Data to be analyzed include CT angiography scans at baseline and Year 3 follow-up and corresponding study data and laboratory tests (e.g. hsCRP); plus, selected data from the main WARRIOR study that are relevant to the present ancillary study.

UPDATE; In this ancillary study, 204 patients will be recruited from the WARRIOR Trial with 102 patients from each of the treatment groups (IMT vs UC). From this cohort, 102 patients per treatment group, most compliant with WARRIOR protocol will undergo a CTA as early as 2 years after their WARRIOR baseline scan up to study completion; with changes in plaque and CAT characteristics quantified.

• Study Type: Observational
• Enrollment (Estimated): 204

Contacts and Locations

• Study Contact: Name: Damini Dey, PhD; Phone Number: 310 423-1517; Email: damini.dey@cshs.org

Study Locations

• United States
  • California
    • Los Angeles, California, United States, 90048
      • Recruiting
      • Cedars-Sinai Medical Center
      • Contact: Damini Dey, PhD; Phone Number: 310-423-1517; Email: damini.dey@cshs.org

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

This ancillary sub-study will draw 204 patients from the WARRIOR patient group (4422 women), who have undergone a baseline CTA as part of the WARRIOR trial. From this group, 204 patients most compliant with the medication regimen (intensive medical therapy (IMT) with aspirin, statin, angiotensin-converting enzyme inhibitor, and/or angiotensin receptor blocker) vs. usual care (UC) recommended in their treatment groups will undergo a follow-up coronary CTA.

Description

Inclusion Criteria:

• In addition to the inclusion criteria of the WARRIOR trial, only women who meet the following criteria will undergo final CTA at the same sites where they are screened and enrolled.
• Initial CTA with excellent or good image quality-defined as images where we are able to clearly identify the atherosclerotic plaque. Based on our preliminary assessment, we expect 90% of studies to be included.
• Measurable plaque with NCP volume ≥ 200mm3; women without significant plaque will not receive additional radiation, and we can detect measurable changes in plaque burden and plaque composition.

Exclusion Criteria:

• In addition to exclusion criteria of the parent WARRIOR trial, key exclusion criteria are:
• Non-adherent with IMT. The parent trial is already powered for non-adherence. In our ancillary trial we have built in an exclusion, from final analysis, of an additional 30% who may be nonadherent with IMT or UC.

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort

CT Coronary Angiogram with quantitative characterization of plaque; Participants (103) from Intensive Medical Therapy [IMT] and 103 from the Usual Care [UC] group in the WARRIOR trial) will undergo CTA at the Year 3 follow-up visit (can be as early as 2 years) at their respective enrollment study sites. Quantitative characterization of plaque analysis will be conducted at Cedars-Sinai Medical Center using Autoplaque plaque analysis software.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in atherosclerotic plaque burden and noncalcified plaque composition	Change in atherosclerotic plaque burden (%) and noncalcified plaque composition (%) using Autoplaque plaque analysis software	3 years
Change in coronary plaque inflammation (measured as CT attenuation of Pericoronary adipose tissue)	Change in pericoronary artery adipose tissue (PCAT) density (CT attenuation of PCAT, in Hounsfield Units) by Autoplaque plaque analysis software	3 years
Change in angina score assessed by the Seattle Angina Questionnaire (SAQ)	Change in angina score quantified by the Seattle Angina Questionnaire (SAQ)	3 years

Collaborators and Investigators

• Sponsor: Cedars-Sinai Medical Center
• Collaborators: National Heart, Lung, and Blood Institute (NHLBI)
• Investigators: Principal Investigator: Damini Dey, PhD, Cedars-Sinai Medical Center; Principal Investigator: Balaji Tamarappoo, MD, Indiana University

Study record dates

Study Major Dates

• Study Start (Actual): July 1, 2020
• Primary Completion (Estimated): August 31, 2024
• Study Completion (Estimated): August 31, 2024

Study Registration Dates

• First Submitted: August 20, 2021
• First Submitted That Met QC Criteria: September 1, 2021
• First Posted (Actual): September 5, 2021

Study Record Updates

• Last Update Posted (Actual): July 18, 2023
• Last Update Submitted That Met QC Criteria: July 14, 2023
• Last Verified: July 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Heart Diseases; Cardiovascular Diseases; Vascular Diseases; Arteriosclerosis; Arterial Occlusive Diseases; Coronary Disease; Coronary Artery Disease; Myocardial Ischemia; Ischemia; Atherosclerosis
• Other Study ID Numbers: STUDY00000896; 1R01HL151266 (U.S. NIH Grant/Contract)

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No