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A Study of Various Respiratory Syncytial Virus (RSV) Pre-Fusion (preF)-Based Vaccine Formulations in Adults Aged 60 Years and Older

A Randomized, Double-blind, Placebo-controlled Phase 1/2a Study for Safety and Immunogenicity Evaluations of Various RSV.preF-based Vaccine Formulations in Adults Aged 60 Years and Older

Status
Terminated
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05327816
Enrollment
132
Registered
2022-04-14
Start date
2022-04-13
Completion date
2023-02-14
Last updated
2025-05-25

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

Conditions

Respiratory Syncytial Virus-associated Lower Respiratory Tract Disease Prevention

Brief summary

The purpose of the study is to evaluate safety and immunogenicity of various respiratory syncytial virus (RSV) pre-Fusion (preF)-based vaccine components followed by expanded safety evaluation and durability/revaccination evaluation of the selected RSV preF-based vaccine formulation in participants aged greater than or equal to (\>=) 60 years in stable health.

Detailed description

RSV is an important cause of serious respiratory infections in adults aged 60 years and older. The current study is divided into four cohorts, evaluating various doses and combinations of RSV preF-based vaccines. Cohort 1 will assess the safety and reactogenicity of different RSV preF-based vaccines. Cohort 2 is an expansion of cohort 1 and will assess both safety and immunogenicity of these different RSV vaccines. based on C1 and 2 data the optimal vaccine composition will be selected and further evaluated in Cohort 3 and 4 including durability and revaccination. Cohort 3 will accumulate safety data on the selected vaccine and optimize its formulation. Cohort 4 is an expansion of several arms in cohort 3, aimed to understand the durability of the immune response induced by the selected vaccine, and to explore the possibility for revaccination.

Interventions

BIOLOGICALRSV preF-based Vaccine

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

DRUGPlacebo

Placebo will be administered as intramuscular injection.

Sponsors

Janssen Vaccines & Prevention B.V.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
60 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* 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 (COPD), Type 2 diabetes mellitus, 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 physical examination, medical history, and vital signs performed between informed consent form (ICF) signature and vaccination * For participants in Cohorts 1 and 2 only: Participant must be healthy on the basis of clinical laboratory tests performed at screening. If the results of the laboratory screening tests are outside the laboratory normal reference ranges and additionally within the limits of toxicity Grade 2 according to the United States Food and Drug Administration (US FDA) toxicity tables (that is, for tests in the FDA table), the participant may be included only if the investigator judges the abnormalities or deviations from normal to be not clinically significant and appropriate and reasonable for the population under study. This determination must be recorded in the participant's source documents and initialed by the investigator * Agrees not to donate blood from the time of vaccination through 3 months after vaccination * Must be willing to provide verifiable identification, has means to be contacted and to contact the investigator during the study

Exclusion criteria

* History of malignancy within 5 years before screening not in the following categories: a) Participants with squamous and basal cell carcinomas of the skin and carcinoma in situ of the cervix may be enrolled at the discretion of the investigator; b) Participants with a history of malignancy within 5 years before screening, with minimal risk of recurrence per investigator's judgment, can be enrolled * Known or suspected allergy or history of anaphylaxis or other serious adverse reactions to vaccines or vaccine components * Per medical history, participant has chronic active hepatitis B or hepatitis C infection, human immunodeficiency viruses (HIV) type 1 or type 2 infection, acute polyneuropathy (example, Guillain-Barré syndrome) or chronic idiopathic demyelinating polyneuropathy * Participant is in receipt of, or planning to receive, licensed live attenuated vaccine within 28 days before and after study vaccinations; other licensed vaccines (that is, not live such as, influenza, tetanus, hepatitis A or B, rabies) within 14 days before and after study vaccinations * Received treatment with immunoglobulins expected to impact the vaccine-induced immune response (including monoclonal antibodies \[MAbs\] for chronic underlying conditions) in the 2 months; immunoglobulins specific to respiratory syncytial virus (RSV), human metapneumovirus, or parainfluenza viruses in the 12 months; apheresis therapies in the 4 months; or blood products in the 4 months prior to study vaccination or has any plans to receive such treatment during the study

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Serious Adverse Events (SAEs)From Day 1 up to 6 months post vaccination (up to Day 183)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 an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect; suspected transmission of any infectious agent via a medicinal product or medically important.
Number of Participants With Adverse Events of Special Interest (AESIs)From Day 1 up to 6 months post vaccination (up to Day 183)Number of participants with AESIs were reported. Thrombosis with thrombocytopenia syndrome (TTS) were considered as potential AESIs.
Number of Participants With Solicited Local and Systemic Adverse Events (AEs)7 days post vaccination (Day 8)Number of participants with solicited local and systemic AEs 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 that included injection site pain/tenderness, erythema and swelling at the study vaccine injection site, are used to assess the reactogenicity of the study vaccine and are pre-defined local (injection site). 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).
Number of Participants With Unsolicited Adverse Events (AEs)28 days post vaccination (Day 29)Number of participants with unsolicited AEs 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 are all AEs for which the participant were not specifically questioned in the participant diary.

Countries

United States

Participant flow

Pre-assignment details

Study was terminated on sponsor's decision, hence, participants were enrolled in Cohort 1 only. Cohorts 2, 3, and 4 were not initiated. Participants enrolled in Cohort 1 completed visit up to Day 183 (6-months post vaccination) and safety evaluations were performed only for Cohort 1. Since the study was terminated prior to Cohort 2 enrolment and the data was planned for combined Cohorts 1 and 2, samples collected in Cohort 1 alone were not tested and no immunogenicity testing was performed.

Participants by arm

ArmCount
Arm 1a (Cohort 1): Ad26.RSV-B.PreF2 1*10^11 vp + RSV-B.PreF Protein 150 mcg
Participants received single intramuscular (IM) injections of adenovirus serotype 26 respiratory syncytial virus-B prefusion-F2 protein (Ad26.RSV-B.preF2) 1\*10\^11 viral particles (vp) and RSV-B.preF protein 150 micrograms (mcg) on Day 1.
12
Arm 1b (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 150 mcg
Participants received single IM injections of adenovirus serotype 26 respiratory syncytial virus-A prefusion-F protein (Ad26.RSV-A.preF) 1\*10\^11 vp and RSV-A.preF protein 150 mcg on Day 1.
12
Arm 1c (Cohort 1): Pooled Placebo
Participants received a single IM injection of placebo on Day 1.
12
Arm 2 (Cohort 1): RSV-A.PreF Protein 150 mcg + RSV-B.PreF Protein 150 mcg
Participants received single IM injections of RSV-A.preF protein 150 mcg and RSV-B.preF protein 150 mcg on Day 1.
12
Arm 3 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 2.5*10^10 vp + RSV-A.PreF/RSV-B.PreF 150 mcg
Participants received single IM injections of Ad26.RSV-A.preF 2.5\*10\^10 vp, Ad26.RSV-B.preF2 2.5 \*10\^10 vp, RSV-A.preF protein 150 mcg, and RSV-B.preF protein 150 mcg on Day 1.
12
Arm 4 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 5*10^10 vp + RSV-A.PreF /RSV-B.PreF 150 mcg
Participants received single IM injections of Ad26.RSV-A.preF 5\*10\^10 vp, Ad26.RSV-B.preF2 5 \*10\^10 vp, RSV-A.preF protein 150 mcg, and RSV-B.preF protein 150 mcg on Day 1.
12
Arm 5 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 300 mcg
Participants received single IM injections of Ad26.RSV-A.preF 1\*10\^11 vp and RSV-A.preF protein 300 mcg on Day 1.
11
Arm 6 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF and RSV-B.PreF at 150 mcg
Participants received single IM injections of Ad26.RSV-A.preF 1\*10\^11 vp, RSV-A.preF protein 150 mcg, and RSV-B.preF protein 150 mcg on Day 1.
11
Arm 7 (Cohort 1):Ad26.RSV-A.PreF 1*10^11vp/Ad26.RSV-B.preF2 5*10^10vp + RSV-A.Pre/RSV-B.PreF 150 mcg
Participants received single IM injections of Ad26.RSV-A.preF 1\*10\^11 vp, Ad26.RSV-B.preF2 5\*10\^10 vp, RSV-A.preF protein 150 mcg, and RSV-B.preF protein 150 mcg on Day 1.
11
Arm 8 (Cohort 1): Ad26.RSV-A.PreF 1.5*10^11 vp +RSV-A.PreF Protein 300 mcg
Participants received single IM injections of Ad26.RSV-A.preF 1.5\*10\^11 vp and RSV-A.preF protein 300 mcg on Day 1.
12
Arm 9 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 1*10^11 vp + RSV-A.PreF/RSV-B.PreF 150 mcg
Participants received single IM injections of Ad26.RSV-A.preF 1\*10\^11 vp, Ad26.RSV-B.preF2 1\*10\^11 vp, RSV-A.preF protein 150 mcg, and RSV-B.preF protein 150 mcg on Day 1.
12
Total129

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007FG008FG009FG010
Overall StudyLost to Follow-up10000000010
Overall StudyRandomized but not treated00000011100
Overall StudyStudy Terminated by Sponsor1112121211111111111112
Overall StudyWithdrawal by Subject00001100000

Baseline characteristics

CharacteristicArm 1a (Cohort 1): Ad26.RSV-B.PreF2 1*10^11 vp + RSV-B.PreF Protein 150 mcgTotalArm 9 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 1*10^11 vp + RSV-A.PreF/RSV-B.PreF 150 mcgArm 8 (Cohort 1): Ad26.RSV-A.PreF 1.5*10^11 vp +RSV-A.PreF Protein 300 mcgArm 7 (Cohort 1):Ad26.RSV-A.PreF 1*10^11vp/Ad26.RSV-B.preF2 5*10^10vp + RSV-A.Pre/RSV-B.PreF 150 mcgArm 6 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF and RSV-B.PreF at 150 mcgArm 5 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 300 mcgArm 4 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 5*10^10 vp + RSV-A.PreF /RSV-B.PreF 150 mcgArm 3 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 2.5*10^10 vp + RSV-A.PreF/RSV-B.PreF 150 mcgArm 2 (Cohort 1): RSV-A.PreF Protein 150 mcg + RSV-B.PreF Protein 150 mcgArm 1c (Cohort 1): Pooled PlaceboArm 1b (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 150 mcg
Age, Continuous69.1 years
STANDARD_DEVIATION 5.42
66.9 years
STANDARD_DEVIATION 4.76
65.5 years
STANDARD_DEVIATION 3.78
65.4 years
STANDARD_DEVIATION 4.4
66.3 years
STANDARD_DEVIATION 3.04
64.8 years
STANDARD_DEVIATION 4.14
68.5 years
STANDARD_DEVIATION 6.12
67.4 years
STANDARD_DEVIATION 4.83
65.7 years
STANDARD_DEVIATION 4.94
69.3 years
STANDARD_DEVIATION 3.39
66.2 years
STANDARD_DEVIATION 5.65
67.8 years
STANDARD_DEVIATION 5.01
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants7 Participants2 Participants1 Participants0 Participants2 Participants0 Participants0 Participants0 Participants0 Participants1 Participants1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
12 Participants122 Participants10 Participants11 Participants11 Participants9 Participants11 Participants12 Participants12 Participants12 Participants11 Participants11 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants18 Participants2 Participants2 Participants1 Participants3 Participants3 Participants1 Participants1 Participants2 Participants1 Participants2 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
12 Participants109 Participants10 Participants10 Participants10 Participants8 Participants8 Participants10 Participants10 Participants10 Participants11 Participants10 Participants
Region of Enrollment
UNITED STATES
12 Participants129 Participants12 Participants12 Participants11 Participants11 Participants11 Participants12 Participants12 Participants12 Participants12 Participants12 Participants
Sex: Female, Male
Female
9 Participants77 Participants5 Participants6 Participants7 Participants9 Participants6 Participants6 Participants6 Participants10 Participants6 Participants7 Participants
Sex: Female, Male
Male
3 Participants52 Participants7 Participants6 Participants4 Participants2 Participants5 Participants6 Participants6 Participants2 Participants6 Participants5 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
EG010
affected / at risk
deaths
Total, all-cause mortality
0 / 120 / 120 / 120 / 120 / 120 / 120 / 110 / 110 / 110 / 120 / 12
other
Total, other adverse events
11 / 129 / 1210 / 1210 / 1210 / 1211 / 128 / 1111 / 1110 / 1111 / 128 / 12
serious
Total, serious adverse events
0 / 120 / 121 / 121 / 120 / 120 / 121 / 111 / 111 / 110 / 120 / 12

Outcome results

Primary

Number of Participants With Adverse Events of Special Interest (AESIs)

Number of participants with AESIs were reported. Thrombosis with thrombocytopenia syndrome (TTS) were considered as potential AESIs.

Time frame: From Day 1 up to 6 months post vaccination (up to Day 183)

Population: The FAS included all participants who received the study vaccine, regardless of the occurrence of protocol deviations.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1a (Cohort 1): Ad26.RSV-B.PreF2 1*10^11 vp + RSV-B.PreF Protein 150 mcgNumber of Participants With Adverse Events of Special Interest (AESIs)0 Participants
Arm 1b (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 150 mcgNumber of Participants With Adverse Events of Special Interest (AESIs)0 Participants
Arm 1c (Cohort 1): Pooled PlaceboNumber of Participants With Adverse Events of Special Interest (AESIs)0 Participants
Arm 2 (Cohort 1): RSV-A.PreF Protein 150 mcg + RSV-B.PreF Protein 150 mcgNumber of Participants With Adverse Events of Special Interest (AESIs)0 Participants
Arm 3 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 2.5*10^10 vp + RSV-A.PreF/RSV-B.PreF 150 mcgNumber of Participants With Adverse Events of Special Interest (AESIs)0 Participants
Arm 4 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 5*10^10 vp + RSV-A.PreF /RSV-B.PreF 150 mcgNumber of Participants With Adverse Events of Special Interest (AESIs)0 Participants
Arm 5 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 300 mcgNumber of Participants With Adverse Events of Special Interest (AESIs)1 Participants
Arm 6 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF and RSV-B.PreF at 150 mcgNumber of Participants With Adverse Events of Special Interest (AESIs)0 Participants
Arm 7 (Cohort 1):Ad26.RSV-A.PreF 1*10^11vp/Ad26.RSV-B.preF2 5*10^10vp + RSV-A.Pre/RSV-B.PreF 150 mcgNumber of Participants With Adverse Events of Special Interest (AESIs)1 Participants
Arm 8 (Cohort 1): Ad26.RSV-A.PreF 1.5*10^11 vp +RSV-A.PreF Protein 300 mcgNumber of Participants With Adverse Events of Special Interest (AESIs)0 Participants
Arm 9 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 1*10^11 vp + RSV-A.PreF/RSV-B.PreF 150 mcgNumber of Participants With Adverse Events of Special Interest (AESIs)0 Participants
Primary

Number of Participants With Serious Adverse Events (SAEs)

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 an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect; suspected transmission of any infectious agent via a medicinal product or medically important.

Time frame: From Day 1 up to 6 months post vaccination (up to Day 183)

Population: The full analysis set (FAS) included all participants who received the study vaccine, regardless of the occurrence of protocol deviations.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1a (Cohort 1): Ad26.RSV-B.PreF2 1*10^11 vp + RSV-B.PreF Protein 150 mcgNumber of Participants With Serious Adverse Events (SAEs)0 Participants
Arm 1b (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 150 mcgNumber of Participants With Serious Adverse Events (SAEs)0 Participants
Arm 1c (Cohort 1): Pooled PlaceboNumber of Participants With Serious Adverse Events (SAEs)1 Participants
Arm 2 (Cohort 1): RSV-A.PreF Protein 150 mcg + RSV-B.PreF Protein 150 mcgNumber of Participants With Serious Adverse Events (SAEs)1 Participants
Arm 3 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 2.5*10^10 vp + RSV-A.PreF/RSV-B.PreF 150 mcgNumber of Participants With Serious Adverse Events (SAEs)0 Participants
Arm 4 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 5*10^10 vp + RSV-A.PreF /RSV-B.PreF 150 mcgNumber of Participants With Serious Adverse Events (SAEs)0 Participants
Arm 5 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 300 mcgNumber of Participants With Serious Adverse Events (SAEs)1 Participants
Arm 6 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF and RSV-B.PreF at 150 mcgNumber of Participants With Serious Adverse Events (SAEs)1 Participants
Arm 7 (Cohort 1):Ad26.RSV-A.PreF 1*10^11vp/Ad26.RSV-B.preF2 5*10^10vp + RSV-A.Pre/RSV-B.PreF 150 mcgNumber of Participants With Serious Adverse Events (SAEs)1 Participants
Arm 8 (Cohort 1): Ad26.RSV-A.PreF 1.5*10^11 vp +RSV-A.PreF Protein 300 mcgNumber of Participants With Serious Adverse Events (SAEs)0 Participants
Arm 9 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 1*10^11 vp + RSV-A.PreF/RSV-B.PreF 150 mcgNumber of Participants With Serious Adverse Events (SAEs)0 Participants
Primary

Number of Participants With Solicited Local and Systemic Adverse Events (AEs)

Number of participants with solicited local and systemic AEs 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 that included injection site pain/tenderness, erythema and swelling at the study vaccine injection site, are used to assess the reactogenicity of the study vaccine and are pre-defined local (injection site). 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).

Time frame: 7 days post vaccination (Day 8)

Population: The FAS included all participants who received the study vaccine, regardless of the occurrence of protocol deviations.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Arm 1a (Cohort 1): Ad26.RSV-B.PreF2 1*10^11 vp + RSV-B.PreF Protein 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Local AEs6 Participants
Arm 1a (Cohort 1): Ad26.RSV-B.PreF2 1*10^11 vp + RSV-B.PreF Protein 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Systemic AEs9 Participants
Arm 1b (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Local AEs8 Participants
Arm 1b (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Systemic AEs8 Participants
Arm 1c (Cohort 1): Pooled PlaceboNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Local AEs5 Participants
Arm 1c (Cohort 1): Pooled PlaceboNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Systemic AEs7 Participants
Arm 2 (Cohort 1): RSV-A.PreF Protein 150 mcg + RSV-B.PreF Protein 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Local AEs7 Participants
Arm 2 (Cohort 1): RSV-A.PreF Protein 150 mcg + RSV-B.PreF Protein 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Systemic AEs8 Participants
Arm 3 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 2.5*10^10 vp + RSV-A.PreF/RSV-B.PreF 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Local AEs8 Participants
Arm 3 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 2.5*10^10 vp + RSV-A.PreF/RSV-B.PreF 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Systemic AEs9 Participants
Arm 4 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 5*10^10 vp + RSV-A.PreF /RSV-B.PreF 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Systemic AEs10 Participants
Arm 4 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 5*10^10 vp + RSV-A.PreF /RSV-B.PreF 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Local AEs10 Participants
Arm 5 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 300 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Systemic AEs7 Participants
Arm 5 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 300 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Local AEs7 Participants
Arm 6 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF and RSV-B.PreF at 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Local AEs8 Participants
Arm 6 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF and RSV-B.PreF at 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Systemic AEs10 Participants
Arm 7 (Cohort 1):Ad26.RSV-A.PreF 1*10^11vp/Ad26.RSV-B.preF2 5*10^10vp + RSV-A.Pre/RSV-B.PreF 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Local AEs9 Participants
Arm 7 (Cohort 1):Ad26.RSV-A.PreF 1*10^11vp/Ad26.RSV-B.preF2 5*10^10vp + RSV-A.Pre/RSV-B.PreF 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Systemic AEs10 Participants
Arm 8 (Cohort 1): Ad26.RSV-A.PreF 1.5*10^11 vp +RSV-A.PreF Protein 300 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Local AEs11 Participants
Arm 8 (Cohort 1): Ad26.RSV-A.PreF 1.5*10^11 vp +RSV-A.PreF Protein 300 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Systemic AEs10 Participants
Arm 9 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 1*10^11 vp + RSV-A.PreF/RSV-B.PreF 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Local AEs7 Participants
Arm 9 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 1*10^11 vp + RSV-A.PreF/RSV-B.PreF 150 mcgNumber of Participants With Solicited Local and Systemic Adverse Events (AEs)Solicited Systemic AEs7 Participants
Primary

Number of Participants With Unsolicited Adverse Events (AEs)

Number of participants with unsolicited AEs 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 are all AEs for which the participant were not specifically questioned in the participant diary.

Time frame: 28 days post vaccination (Day 29)

Population: The FAS included all participants who received the study vaccine, regardless of the occurrence of protocol deviations.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm 1a (Cohort 1): Ad26.RSV-B.PreF2 1*10^11 vp + RSV-B.PreF Protein 150 mcgNumber of Participants With Unsolicited Adverse Events (AEs)5 Participants
Arm 1b (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 150 mcgNumber of Participants With Unsolicited Adverse Events (AEs)2 Participants
Arm 1c (Cohort 1): Pooled PlaceboNumber of Participants With Unsolicited Adverse Events (AEs)4 Participants
Arm 2 (Cohort 1): RSV-A.PreF Protein 150 mcg + RSV-B.PreF Protein 150 mcgNumber of Participants With Unsolicited Adverse Events (AEs)3 Participants
Arm 3 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 2.5*10^10 vp + RSV-A.PreF/RSV-B.PreF 150 mcgNumber of Participants With Unsolicited Adverse Events (AEs)4 Participants
Arm 4 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 5*10^10 vp + RSV-A.PreF /RSV-B.PreF 150 mcgNumber of Participants With Unsolicited Adverse Events (AEs)0 Participants
Arm 5 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF Protein 300 mcgNumber of Participants With Unsolicited Adverse Events (AEs)2 Participants
Arm 6 (Cohort 1): Ad26.RSV-A.PreF 1*10^11 vp + RSV-A.PreF and RSV-B.PreF at 150 mcgNumber of Participants With Unsolicited Adverse Events (AEs)1 Participants
Arm 7 (Cohort 1):Ad26.RSV-A.PreF 1*10^11vp/Ad26.RSV-B.preF2 5*10^10vp + RSV-A.Pre/RSV-B.PreF 150 mcgNumber of Participants With Unsolicited Adverse Events (AEs)4 Participants
Arm 8 (Cohort 1): Ad26.RSV-A.PreF 1.5*10^11 vp +RSV-A.PreF Protein 300 mcgNumber of Participants With Unsolicited Adverse Events (AEs)5 Participants
Arm 9 (Cohort 1): Ad26.RSV-A.PreF/Ad26.RSV-B.preF2 1*10^11 vp + RSV-A.PreF/RSV-B.PreF 150 mcgNumber of Participants With Unsolicited Adverse Events (AEs)2 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026