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Respiratory Syncytial Virus PreventionPhase 3NCT05083585

A Study Evaluating the Immunogenicity of Different Clinical Trial Materials of Ad26.RSV.preF- Based Vaccine in Adults Aged 60 - 75 Years Old

A Phase 3 study testing Ad26.RSV.preF-based vaccine in people with Respiratory Syncytial Virus Prevention, run by Janssen Vaccines & Prevention B.V. at 9 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to demonstrate non-inferiority in terms of humoral immune responses induced by vaccination with one dose of the Phase 3 clinical trial material (CTM) compared with one dose of the Phase 2b CTM. Read more about this study

Who is it for?
Ages 60 to 75 yearsHealthy volunteers can take part
Conditions the study is for
Respiratory Syncytial Virus Prevention
What is being tested?
Ad26.RSV.preF-based vaccine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
250 participants
Where
9 sitesUnited States
Study dates
8 Oct 2021to 22 Sep 2022
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 60 to 75 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Willing and able to adhere to the prohibitions and restrictions specified in the protocol
  • Before randomization, a participant must be postmenopausal (postmenopausal state is defined as no menses for 12 months without an alternative medical cause); and not intending to conceive by any methods
  • In the investigator's clinical judgment, participant must be in stable health at the time of vaccination. Participants may have underlying illnesses such as hypertension, congestive heart failure, chronic obstructive pulmonary disease, type 2 diabetes, hyperlipoproteinemia, or hypothyroidism, as long as their symptoms and signs are stable at the time of vaccination, and these conditions receive routine follow-up by the participant's healthcare provider. Participants will be included on the basis of medical history, and vital signs performed between informed consent form (ICF) signature and vaccination
  • Must be willing to provide verifiable identification, has means to be contacted and to contact the investigator during the study
  • From the time of vaccination through 3 months after vaccination, agrees not to donate blood

Who cannot join

  • Known or suspected allergy or history of anaphylaxis or other serious adverse reactions to vaccines or their excipients (including specifically the excipients of the study vaccine)
  • Abnormal function of the immune system resulting from clinical condition or medication
  • History of acute polyneuropathy (example, Guillain-Barré syndrome) or chronic idiopathic demyelinating polyneuropathy
  • History of thrombosis with thrombocytopenia syndrome (TTS) or heparin-induced thrombocytopenia and thrombosis (HITT)
  • Has had major surgery (per the investigator's judgment) within 4 weeks before administration of the study vaccine or will not have recovered from surgery per the investigator's judgment at time of vaccination

Trial locations and contacts

9 sites in 1 country.

9 sites in 1 country

United States9 sites
  • Meridian Clinical Research, LLC

    Cincinnati, Ohio, 45219

  • Accel Research Sites

    Lakeland, Florida, 33803

  • Optimal Research

    Melbourne, Florida, 32934

  • Pharmax Research Clinic Inc

    Miami, Florida, 33126

  • Research Institute of South Florida Inc

    Miami, Florida, 33173

  • Progressive Medical Research

    Port Orange, Florida, 32127

  • Tekton Research Inc.

    San Antonio, Texas, 78229

  • Artemis Institute for Clinical Research

    San Diego, California, 92103

  • Optimal Research

    San Diego, California, 92108

Other trials in United States

About this study

Official title: A Randomized, Double-blind Phase 3 Study to Compare the Immunogenicity of Clinical Trial Material of an Ad26.RSV.preF-based Vaccine for Phase 3 With Clinical Trial Material Representative of Phase 2b in Adults Aged 60 to 75 Years

The purpose of this study is to demonstrate non-inferiority in terms of humoral immune responses induced by vaccination with one dose of the Phase 3 clinical trial material (CTM) compared with one dose of the Phase 2b CTM.

Being tested
Ad26.RSV.preF-based vaccine

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Ad26.RSV.preF-based vaccineBiological

    Ad26.RSV.preF-based vaccine will be administered as a single intramuscular injection.

Study groups in NCT05083585
Study groupRoleWhat they receive
Group 1: Phase 3 Clinical Trial Material (CTM)ExperimentalParticipants will receive a single intramuscular (IM) injection of adenovirus serotype 26 (Ad26). respiratory syncytial virus (RSV). prefusion conformation-stabilized F protein (preF)-based vaccine on Day 1, which is a Phase 3 CTM.
Receives: Biological: Ad26.RSV.preF-based vaccine
Group 2: Phase 2b CTMExperimentalParticipants will receive a single IM injection of Ad26.RSV.preF-based vaccine on Day 1, which is a Phase 2b CTM.
Receives: Biological: Ad26.RSV.preF-based vaccine

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Geometric Mean Titers (GMTs) of Prefusion F-protein (preF) Antibodies as Assessed by Enzyme-linked Immunosorbent Assay (ELISA) 14 Days Post Vaccination

    GMTs of pre-F antibodies as assessed by ELISA at 14 days post administration of Ad26/protein preF RSV based vaccine were reported.

    Measured: 14 days post vaccination on Day 1 (Day 15)

Secondary outcomes (6)
  1. Number of Participants With Solicited Local Adverse Events (AEs) for 7 Days Post Vaccination

    Number of participants with solicited local AEs 7 days post vaccination on Day 1 were reported. An AE is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study. Solicited local AEs were precisely defined events that participants were specifically asked about and which were noted by participants in the diary. Solicited local AEs that included injection site pain/tenderness, erythema and swelling at the study vaccine injection site, were used to assess the reactogenicity of the study vaccine and were pre-defined local (injection site).

    Measured: Up to Day 7 post vaccination on Day 1 (up to Day 8)

  2. Number of Participants With Solicited Systemic AEs for 7 Days Post Vaccination

    Number of participants with solicited systemic AEs 7 days post vaccination on Day 1 were reported. An AE is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study. Solicited systemic events included events such as fatigue, headache, nausea, and myalgia, for which participants were specifically questioned and which were noted by participants in their participant diary for 7 days post vaccination (day of vaccination and the subsequent 7 days).

    Measured: Up to Day 7 post vaccination on Day 1 (up to Day 8)

  3. Number of Participants With Unsolicited AEs for 28 Days Post Vaccination

    Number of participants with unsolicited AEs 28 days post vaccination on Day 1 were reported. An AE is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study. Unsolicited AEs were all AEs for which the participant was not specifically questioned in the participant diary.

    Measured: Up to Day 28 post vaccination on Day 1 (up to Day 29)

  4. Number of Participants With Serious Adverse Events (SAEs) Until 6 Months Post Vaccination

    Number of participants with SAEs until 6 months post vaccination on Day 1 were reported. An AE is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study. An SAE is any untoward medical occurrence that at any dose may result 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, is a suspected transmission of any infectious agent via a medicinal product.

    Measured: From Day 1 up to 6 months post vaccination on Day 1 (up to Day 183)

  5. Number of Participants With Adverse Event of Special Interests (AESIs) Until 6 Months Post Vaccination

    Number of participants with AESIs until 6 months post vaccination on Day 1 were reported. An AE is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study. Thrombosis with thrombocytopenia syndrome (TTS) was considered as an AESI.

    Measured: From Day 1 up to 6 months post vaccination on Day 1 (up to Day 183)

  6. Respiratory Syncytial Virus (RSV) A2 Strain Neutralization Antibody Titers at 14 Days Post Vaccination

    RSV A2 strain neutralizing antibody titers of the vaccine-induced immune response was assessed through virus neutralization assay at 14 days post administration of Ad26/protein preF RSV based vaccine were expressed as 50 percent (%) inhibitory concentration (IC50) units.

    Measured: 14 days post vaccination on Day 1 (Day 15)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 Oct 2021
  2. Study start8 Oct 2021
  3. Primary completion7 Mar 2022
  4. Study completion22 Sep 2022

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Other
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
250 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05083585
Sponsor's protocol ID
CR109065
Other IDs
VAC18193RSV3004
Status last verified
May 2025
First submitted
7 Oct 2021
Last updated
25 May 2025
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: The data sharing policy of the Janssen Pharmaceutical Companies of Johnson and Johnson is available at www.janssen.com/clinical trials/transparency. As noted on this site, requests for access to the study data can be submitted through Yale Open Data Access (YODA) Project site at yoda.yale.edu

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Ad26.RSV.preF-based vaccine in people with Respiratory Syncytial Virus Prevention, run by Janssen Vaccines & Prevention B.V. at 9 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 25 May 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 9 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 11 Sep 2023). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Geometric Mean Titers (GMTs) of Prefusion F-protein (preF) Antibodies as Assessed by Enzyme-linked Immunosorbent Assay (ELISA) 14 Days Post Vaccination (time frame: 14 days post vaccination on Day 1 (Day 15)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 May 2025.

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