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A Study Exploring the Effect of Adjuvanted RZV or RSVPreF3 Vaccines on Coronary Plaque Progression in Adults >=50 Years of Age at Risk for Cardiovascular Events

A Randomized, Observer-blind, Placebo-controlled Exploratory Study to Evaluate Whether Administration of Adjuvanted RZV or RSVPreF3 Vaccine Can Attenuate Coronary Plaque Progression in Individuals 50 Years of Age and Above Who Are at Risk for Cardiovascular Events

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07712380
Enrollment
450
Registered
2026-07-17
Start date
2026-08-31
Completion date
2029-05-04
Last updated
2026-07-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cardiovascular Disease

Keywords

Adjuvanted Recombinant zoster vaccine, Adjuvanted RSVPreF3 vaccine, Herpes Zoster, Respiratory syncytial virus, RSV, Coronary plaque, Cardiovascular disease

Brief summary

This study is designed to evaluate whether the adjuvanted recombinant zoster vaccine (RZV) or the adjuvanted respiratory syncytial virus PreFusion protein 3 (RSVPreF3) vaccine can attenuate the progression of coronary plaque in adult individuals at risk for cardiovascular events.

Interventions

COMBINATION_PRODUCTPlacebo

Placebo will be administered intramuscularly.

COMBINATION_PRODUCTAdjuvanted RZV vaccine

Adjuvanted RZV vaccine will be administered intramuscularly.

Adjuvanted RSVPreF3 vaccine will be administered intramuscularly.

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

This study will be conducted in an observer-blind manner.

Eligibility

Sex/Gender
ALL
Age
50 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Participants, including participants with a caregiver who, in the opinion of the investigator, can and will comply with the requirements of the protocol. * Written or witnessed informed consent obtained from the participant prior to performance of any study-specific procedure. * Medically stable patients as established by medical history and clinical examination at screening. * Male or female participants \>=50 years of age (YOA) at the time of the first study intervention administration. * Participants with documented history of coronary artery calcium (CAC) and two or more risk factors for cardiovascular disease. * Participants with estimate glomerular filtration rate (eGFR) \>=45 mL/min/1.73m\^2. * Participants who can undergo serial CCTA. * Participants with no planned changes in medical therapies through the course of the study. * Participants of non-childbearing potential may be enrolled in the clinical study. * Participant of childbearing potential may be enrolled in the study if the participant: * has practiced adequate contraception for at least 30 days prior to study intervention administration, and * has a negative pregnancy test within 24 hours prior to the study intervention administration and prior to each CCTA, and * has agreed to continue adequate contraception during the entire duration of the study and for 8 weeks after completion of the study.

Exclusion criteria

Cardiovascular conditions * Prior atherosclerotic cardiovascular disease (ASCVD) event. * History or planned coronary artery bypass grafting (CABG), any cardiovascular surgery, percutaneous coronary intervention (PCI), or valvular intervention. * Heart failure with Class III or IV symptoms according to the New York Heart Association and/or unstable heart failure at the screening visit. Other medical conditions * History of any reaction or hypersensitivity likely to be exacerbated by any component of the study intervention(s). * Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination (no laboratory testing required). * Acute or unstable chronic conditions, clinically significant pulmonary, cardiovascular, hepatic, or renal functional abnormality, as determined by physical examination and/or laboratory screening tests. * Recurrent history or uncontrolled neurological disorders or any neuroinflammatory, congenital neurological conditions, encephalopathies, or seizures. * Any other clinical condition that, in the opinion of the investigator, might pose additional risk to the participant due to participation in the clinical study. * Condition that in the judgment of the investigator would make intramuscular injection unsafe. * Significant underlying illness that in the opinion of the investigator would be expected to prevent completion of the study. * History of malignancy \<=5 years, radiation therapy or systemic therapy prior to signing informed consent. * Any history of dementia or any medical condition that moderately or severely impairs cognition. Prior/Concomitant therapy * Previous vaccination against Herpes Zoster (HZ) (investigational or licensed vaccine) and/or planned administration of vaccination against HZ during the study period other than the vaccine administered during the study. * Previous vaccination with an RSV vaccine (investigational or licensed vaccine) and/or planned administration of an RSV vaccine during the study period other than the adjuvanted RSVPreF3 vaccine administered during the study. * Use of any investigational or non-registered product other than the study intervention(s) during the period beginning 30 days before the first dose of study intervention(s) (Day -29 to Day 1), or their planned use during the study period. * Administration of immunoglobulins or other blood products or plasma derivatives during the period starting 90 days before the study intervention or planned administration during the study period. * Chronic administration of immune-modifying drugs and/or planned use of long-acting immune-modifying treatments at any time up to the end of the study. * Planned administration/administration of a vaccine in the period starting 30 days before the first dose/each dose and ending 30 days after the last dose/each dose of study intervention(s) administration, with the exception of SARS-CoV-2 and inactivated seasonal influenza (flu) vaccine which can be administered up to 14 days before or 14 days after study intervention administration. Prior/Concurrent clinical study participation * Concurrently participating in another clinical study, at any time during the study period, in which the participant has been or will be exposed to an investigational or a non-investigational intervention drug/invasive medical device. * Contraindications to CCTA. Other

Design outcomes

Primary

MeasureTime frame
Change from Baseline in total coronary non-calcified plaque volume (NCPV) as measured on coronary computed tomography angiography (CCTA)At Baseline (Day 1) and at Month 14

Secondary

MeasureTime frameDescription
Change from Baseline in total coronary plaque volume as measured on CCTAAt Baseline (Day 1) and at Month 14
Change from Baseline in low attenuation plaque as measured on CCTAAt Baseline (Day 1) and at Month 14
Change from Baseline in peri-coronary fat attenuation index as measured on CCTAAt Baseline (Day 1) and at Month 14
Number of participants with any serious adverse events (SAEs)From Day 1 to Month 15An SAE is defined as any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, is an abnormal pregnancy outcome or is a suspected transmission of any infectious agent via an authorized medicinal product. Any = occurrence of the SAE regardless of intensity grade or relation to the study vaccination.
Number of participants with SAEs related to study participation or study proceduresFrom start of screening (Day -15) to Month 15
Number of participants with SAEs leading to withdrawal from the studyFrom Day 1 to Month 15

Contacts

CONTACTUS GSK Clinical Trials Call Center
GSKClinicalSupportHD@gsk.com877-379-3718
CONTACTEU GSK Clinical Trials Call Center
GSKClinicalSupportHD@gsk.com+44 (0) 20 89904466

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 18, 2026