ClinicalTrials.gg
CompletedNCT03339713Updated Feb 4, 2025Results posted

A Study to Evaluate the Safety and Immunogenicity of Seasonal Influenza Vaccine and an Adenovirus Serotype 26- Based Vaccine Encoding for the Respiratory Syncytial Virus Pre-fusion F Protein (Ad26.RSV.preF), With and Without Co-administration, in Adults Aged 60 Years and Older in Stable Health

A Phase 2 interventional study of Ad26.RSV.preF and Fluarix in Healthy, sponsored by Janssen Vaccines & Prevention B.V.. Completed at 1 site in United States. Open to participants aged 60 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-02-04.

Sponsored by Janssen Vaccines & Prevention B.V. (part of Johnson & Johnson) · Phase 2, Interventional, and Prevention

Phase
Phase 2
Study type
Interventional
Enrollment
180
Allocation
Randomized
Ages
60 Years and older
Sex
All
01

Study summary

The purpose of this study is to demonstrate the non-inferiority of the concomitant administration of an adenovirus serotype 26- based vaccine encoding for the respiratory syncytial virus pre-fusion F protein (Ad26.RSV.preF) and seasonal influenza vaccine versus the administration of seasonal influenza vaccine alone in terms of humoral immune response expressed by the geometric mean titers (GMTs) of hemagglutination inhibition (HI) antibody titers against all four influenza vaccine strains 28 days after the administration of influenza vaccine, and to assess the safety and tolerability of a single dose of 1*10\^11 viral particles (vp) of Ad26.RSV.preF, administered intramuscularly to participants aged greater than or equal to 60 years separately or concomitantly with seasonal influenza vaccine.

02

Conditions studied

  • Healthy
03

In context

Lead sponsor

Janssen Vaccines & Prevention B.V. is the lead sponsor of 49 studies on the registry; none are open to participants now.

Of its 37 completed or terminated interventional studies of FDA-regulated products, 32 (86%) have results posted.

First submitted after Janssen Vaccines & Prevention B.V. became part of Johnson & Johnson.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
60 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Each participant must sign an form (ICF) indicating that he or she understands the purpose of and procedures required for the study, is willing to participate in the study and attend all scheduled visits, and is willing and able to comply with all study procedures and adhere to the prohibitions and restrictions specified in this protocol
  • Before randomization, a woman must be:

    1. (A postmenopausal state is defined as no menses for 12 months without an alternative medical cause) and
    2. Not intending to conceive by any methods
  • In the investigator's clinical judgment, participant must be either in good or stable health, and not at risk of serious complications from influenza. Participants may have underlying illnesses such as hypertension, type 2 diabetes, hyperlipoproteinemia, or hypothyroidism, as long as their symptoms/signs are medically controlled. If they are on medication for a condition, the medication dose must have been stable for at least 12 weeks (or only small, clinically non-significant changes have been made in the judgement of the Principal Investigator) preceding vaccination and expected to remain stable for the duration of the study. Participants will be included on the basis of physical examination, medical history, vital signs, and 12-lead (ECG) performed on Day 1
  • From the time of first vaccination through 3 months after the second dose of study vaccine, participant agrees not to donate blood
  • Participant must be willing to provide verifiable identification, have means to be contacted and to contact the investigator during the study

Exclusion criteria

Exclusion Criteria:

  • Participant has acute illness (this does not include minor illnesses such as diarrhea) or temperature greater than or equal to (>=) 38.0 degree Celsius (ºC) within 24 hours prior to the first dose of study vaccine; enrollment at a later date is permitted
  • Participant has a serious chronic disorder, including severe or congestive heart failure, requirement for supplemental oxygen, end stage renal disease with or without dialysis, clinically unstable cardiac disease, Alzheimer's disease, or has any condition for which, in the opinion of the investigator, participation would not be in the best interest of the participant (for example, compromise well-being) or that could prevent, limit, or confound the protocol-specified assessments
  • Participant has history of within 5 years before screening (exceptions are squamous and basal cell carcinomas of the skin and carcinoma in situ of the cervix, or malignancy, which is considered cured with minimal risk of recurrence)
  • Participant has had major surgery (per the investigator's judgment), within 4 weeks before dosing, or will not have fully recovered from surgery, or has surgery planned during the time the participant is expected to participate in the study or within 6 months after the final dose of study vaccine
  • Participant has chronic active or infection, documented by hepatitis B surface antigen and hepatitis C antibody, respectively
Terms in these criteria, in plain language(8)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

COPD

Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

05

Study design

Phase
Phase 2
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
180 participants (actual)

Study arms

  • Experimental
    Ad26.RSV.preF Plus Fluarix Then Placebo: Group 1

    Participants will receive intramuscular injection of 1\*10\^11 viral particles (vp) of an adenovirus serotype 26- based vaccine encoding for the respiratory syncytial virus pre-fusion F protein (Ad26.RSV.preF) on 1 arm administered at the same time as a commercially available seasonal influenza vaccine (Fluarix) on the other arm at Day 1, and intramuscular injection of placebo on Day 29.

    Biological: Ad26.RSV.preF · Biological: Fluarix · Biological: Placebo

  • Experimental
    Placebo Plus Fluarix Then Ad26.RSV.preF: Group 2

    Participants will receive intramuscular injection of placebo administered at the same time as a commercially available seasonal influenza vaccine (Fluarix) on Day 1, and 1\*10\^11 vp of Ad26.RSV.preF on Day 29.

    Biological: Ad26.RSV.preF · Biological: Fluarix · Biological: Placebo

Interventions

  • BiologicalAd26.RSV.preF

    Ad26.RSV.preF will be administered as intramuscular injection at a dose of 1\*10\^11 vp.

    Also known as: JNJ-64400141

  • BiologicalFluarix

    Fluarix will be administered as intramuscular injection.

  • BiologicalPlacebo

    Placebo will be administered as intramuscular injection of sterile 0.9 percent (%) saline for injection.

06

What researchers measure

Primary outcomes

  1. Hemagglutination Inhibition (HI) Antibody Titers as Measured by Hemagglutination Inhibition Assay (HAI) Against Each of the Four Vaccine Influenza Strains

    Humoral immune responses expressed by the geometric mean titers (GMTs) of HI antibody titers against each of four influenza vaccine strains (A/Michigan, A/Hong Kong, B/Brisbane and B/Phuket). Serum specimens were tested for the presence of HAI antibodies to influenza vaccine strains. The HAI assay was conducted using serum samples from participants.

    Time frame: 28 days after vaccination (Day 29)

  2. Post-dose 1: Percentage of Participants Reporting at Least 1 Solicited Local and Systemic Adverse Events (AEs)

    Percentage of participants reporting at least 1 solicited local and systemic AEs were shown. Solicited local AEs: erythema, swelling/induration, and pain/tenderness. Solicited systemic AEs: fatigue, headache, myalgia, arthralgia, chills, nausea and fever. An AE is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with a clear causal relationship with the relevant investigational product.

    Time frame: Up to 7 days post-dose 1 on Day 1 (Day 8)

  3. Post-dose 2: Percentage of Participants Reporting at Least 1 Solicited Local and Systemic AEs

    Percentage of participants reporting at least 1 solicited local and systemic AEs were shown. Solicited local AEs: erythema, swelling/induration, and pain/tenderness. Solicited systemic AEs: fatigue, headache, myalgia, arthralgia, chills, nausea and fever. An AE is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with a clear causal relationship with the relevant investigational product.

    Time frame: Up to 7 days post-dose 2 on Day 29 (Day 36)

  4. Post-dose 1: Percentage of Participants With Unsolicited AEs

    Percentage of participants with unsolicited AEs were shown. Unsolicited AEs are all AEs for which participants were specifically not questioned in the participant diary. An AE is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with a clear causal relationship with the relevant investigational product.

    Time frame: Up to 28 days post-dose 1 on Day 1 (Day 29)

  5. Post-dose 2: Percentage of Participants With Unsolicited AEs

    Percentage of participants with unsolicited AEs 2 were shown. Unsolicited AEs are all AEs for which participants were specifically not questioned in the participant diary. An AE is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with a clear causal relationship with the relevant investigational product.

    Time frame: Up to 28 days post-dose 2 on Day 29 (Day 57)

  6. Post-dose 1: Percentage of Participants With Serious Adverse Events (SAEs)

    A 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.

    Time frame: Up to 6 months post-dose 1 (Day 183)

  7. Post-dose 2: Percentage of Participants With SAEs

    A 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.

    Time frame: Up to 6 months post-dose 2 (Day 211)

Secondary outcomes

  1. Respiratory Syncytial Virus (RSV) A2 Strain Neutralization Antibody Titers

    RSV A2 neutralizing titers of the vaccine-induced immune response was assessed through virus neutralization assay.

    Time frame: Baseline and Day 29 (post Ad26.RSV.preF)

  2. RSV Fusion Protein (F-protein) Geometric Mean Titers (GMTs) as Assessed by Enzyme-linked Immunosorbent Assay (ELISA)- Pre-Fusion

    GMT (ELISA units per litre \[EU/L\]) of RSV F protein in pre-fusion form by ELISA was reported.

    Time frame: Baseline and Day 29 (post Ad26.RSV.preF)

  3. RSV Fusion Protein (F-protein) GMTs as Assessed by ELISA- Post-Fusion

    GMT (EU/L) to RSV F protein in post-fusion form by ELISA was reported.

    Time frame: Baseline and Day 29 (post Ad26.RSV.preF)

07

Results

Posted Aug 18, 2021
Limitations and caveats
Although qualification of the site was satisfactory for peripheral blood mononuclear cells (PBMC) processing,during the study PBMC processing resulted in much lower yield than expected, which have affected the quality of PBMC. While sample quality requirements on sample viability were met for most samples,viability was considered lower than commonly expected.An indication of possible suboptimal quality of PBMC samples were also be a low baseline responses observed in comparison to other studies.

Participant flow

Participant flow — Overall Study
MilestoneGroup 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)
Started9090
Completed8688
Not completed42
Withdrew: Lost to follow-up21
Withdrew: Protocol violation10
Withdrew: Withdrawal by subject11

Outcome measures

PrimaryHemagglutination Inhibition (HI) Antibody Titers as Measured by Hemagglutination Inhibition Assay (HAI) Against Each of the Four Vaccine Influenza Strains

Humoral immune responses expressed by the geometric mean titers (GMTs) of HI antibody titers against each of four influenza vaccine strains (A/Michigan, A/Hong Kong, B/Brisbane and B/Phuket). Serum specimens were tested for the presence of HAI antibodies to influenza vaccine strains. The HAI assay was conducted using serum samples from participants.

Time frame:
28 days after vaccination (Day 29)
Reported as:
Geometric mean · Titers
Hemagglutination Inhibition (HI) Antibody Titers as Measured by Hemagglutination Inhibition Assay (HAI) Against Each of the Four Vaccine Influenza Strains
TitersGroup 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)
A/Michigan strain215 (160 to 289)168 (125 to 226)
A/Hong Kong strain98 (73 to 131)80 (61 to 103)
B/Brisbane strain39 (31 to 49)40 (31 to 51)
B/Phuket strain35 (28 to 43)35 (27 to 46)
Statistical analysis
  • Group 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then Placebo vs Group 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp) · t-test, 1 sided · p = <.001 · Geometric mean ratio: 0.8 · 90% CI 0.55 to 1.11
  • Group 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then Placebo vs Group 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp) · t-test, 1 sided · p = <.001 · Geometric mean ratio: 0.8 · 90% CI 0.59 to 1.12
  • Group 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then Placebo vs Group 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp) · t-test, 1 sided · p = <.001 · Geometric mean ratio: 1.0 · 90% CI 0.77 to 1.34
  • Group 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then Placebo vs Group 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp) · t-test, 1 sided · p = <.001 · Geometric mean ratio: 1.0 · 90% CI 0.76 to 1.36
PrimaryPost-dose 1: Percentage of Participants Reporting at Least 1 Solicited Local and Systemic Adverse Events (AEs)

Percentage of participants reporting at least 1 solicited local and systemic AEs were shown. Solicited local AEs: erythema, swelling/induration, and pain/tenderness. Solicited systemic AEs: fatigue, headache, myalgia, arthralgia, chills, nausea and fever. An AE is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with a clear causal relationship with the relevant investigational product.

Time frame:
Up to 7 days post-dose 1 on Day 1 (Day 8)
Reported as:
Number · Percentage of participants
Post-dose 1: Percentage of Participants Reporting at Least 1 Solicited Local and Systemic Adverse Events (AEs)
Percentage of participantsGroup 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)
Post-dose 1: Solicited local AEs80.045.6
Post-dose 1: Solicited systemic AEs63.327.8
PrimaryPost-dose 2: Percentage of Participants Reporting at Least 1 Solicited Local and Systemic AEs

Percentage of participants reporting at least 1 solicited local and systemic AEs were shown. Solicited local AEs: erythema, swelling/induration, and pain/tenderness. Solicited systemic AEs: fatigue, headache, myalgia, arthralgia, chills, nausea and fever. An AE is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with a clear causal relationship with the relevant investigational product.

Time frame:
Up to 7 days post-dose 2 on Day 29 (Day 36)
Reported as:
Number · Percentage of participants
Post-dose 2: Percentage of Participants Reporting at Least 1 Solicited Local and Systemic AEs
Percentage of participantsGroup 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)
Post-dose 2: Solicited local AEs6.876.7
Post-dose 2: Solicited systemic AEs18.270.0
PrimaryPost-dose 1: Percentage of Participants With Unsolicited AEs

Percentage of participants with unsolicited AEs were shown. Unsolicited AEs are all AEs for which participants were specifically not questioned in the participant diary. An AE is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with a clear causal relationship with the relevant investigational product.

Time frame:
Up to 28 days post-dose 1 on Day 1 (Day 29)
Reported as:
Number · Percentage of participants
Post-dose 1: Percentage of Participants With Unsolicited AEs
Percentage of participantsGroup 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)
Post-dose 1: Percentage of Participants With Unsolicited AEs36.733.3
PrimaryPost-dose 2: Percentage of Participants With Unsolicited AEs

Percentage of participants with unsolicited AEs 2 were shown. Unsolicited AEs are all AEs for which participants were specifically not questioned in the participant diary. An AE is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with a clear causal relationship with the relevant investigational product.

Time frame:
Up to 28 days post-dose 2 on Day 29 (Day 57)
Reported as:
Number · Percentage of participants
Post-dose 2: Percentage of Participants With Unsolicited AEs
Percentage of participantsGroup 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)
Post-dose 2: Percentage of Participants With Unsolicited AEs18.218.9
PrimaryPost-dose 1: Percentage of Participants With Serious Adverse Events (SAEs)

A 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.

Time frame:
Up to 6 months post-dose 1 (Day 183)
Reported as:
Number · Percentage of participants
Post-dose 1: Percentage of Participants With Serious Adverse Events (SAEs)
Percentage of participantsGroup 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)
Post-dose 1: Percentage of Participants With Serious Adverse Events (SAEs)00
PrimaryPost-dose 2: Percentage of Participants With SAEs

A 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.

Time frame:
Up to 6 months post-dose 2 (Day 211)
Reported as:
Number · Percentage of participants
Post-dose 2: Percentage of Participants With SAEs
Percentage of participantsGroup 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)
Post-dose 2: Percentage of Participants With SAEs11
SecondaryRespiratory Syncytial Virus (RSV) A2 Strain Neutralization Antibody Titers

RSV A2 neutralizing titers of the vaccine-induced immune response was assessed through virus neutralization assay.

Time frame:
Baseline and Day 29 (post Ad26.RSV.preF)
Reported as:
Geometric mean · Titers
Respiratory Syncytial Virus (RSV) A2 Strain Neutralization Antibody Titers
TitersGroup 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)
Baseline497 (429 to 576)539 (458 to 636)
Day 291404 (1208 to 1633)1690 (1433 to 1993)
SecondaryRSV Fusion Protein (F-protein) Geometric Mean Titers (GMTs) as Assessed by Enzyme-linked Immunosorbent Assay (ELISA)- Pre-Fusion

GMT (ELISA units per litre \[EU/L\]) of RSV F protein in pre-fusion form by ELISA was reported.

Time frame:
Baseline and Day 29 (post Ad26.RSV.preF)
Reported as:
Geometric mean · EU/L
RSV Fusion Protein (F-protein) Geometric Mean Titers (GMTs) as Assessed by Enzyme-linked Immunosorbent Assay (ELISA)- Pre-Fusion
EU/LGroup 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)
Baseline333 (289 to 384)315 (267 to 371)
Day 29781 (694 to 879)814 (711 to 932)
SecondaryRSV Fusion Protein (F-protein) GMTs as Assessed by ELISA- Post-Fusion

GMT (EU/L) to RSV F protein in post-fusion form by ELISA was reported.

Time frame:
Baseline and Day 29 (post Ad26.RSV.preF)
Reported as:
Geometric mean · EU/L
RSV Fusion Protein (F-protein) GMTs as Assessed by ELISA- Post-Fusion
EU/LGroup 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)
Baseline256 (223 to 295)236 (203 to 274)
Day 29506 (444 to 577)484 (426 to 549)

Adverse events

Collected over SAEs were collected up to end of study (Day 211) and non-serious AEs were collected up to 28 days Post-dose 1 (Day 29) and Post-dose 2 (Day 57).. Non-serious events are listed at a 2% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Group 1 Post-Dose 1: Ad26.RSV.preF (1*10^11 vp) + Fluarix Quadrivalent (Day 1)0/90 (0%)0/90 (0%)22/90 (24.4%)
Group 2 Post-Dose 1: Placebo + Fluarix Quadrivalent (Day 1)0/90 (0%)0/90 (0%)18/90 (20%)
Group 1 Post-Dose 2: Placebo (Day 29)0/88 (0%)1/88 (1.1%)13/88 (14.8%)
Group 2 Post-Dose 2: Ad26.RSV.preF (Day 29)0/90 (0%)1/90 (1.1%)14/90 (15.6%)
Most frequent serious events
Most frequent serious events
EventGroup 1 Post-Dose 1: Ad26.RSV.preF (1*10^11 vp) + Fluarix Quadrivalent (Day 1)Group 2 Post-Dose 1: Placebo + Fluarix Quadrivalent (Day 1)Group 1 Post-Dose 2: Placebo (Day 29)Group 2 Post-Dose 2: Ad26.RSV.preF (Day 29)
BradycardiaCardiac disorders0/900/901/880/90
Renal InjuryRenal and urinary disorders0/900/901/880/90
Hypertensive EmergencyVascular disorders0/900/901/880/90
SyncopeNervous system disorders0/900/900/881/90
Most frequent other events
Most frequent other events
EventGroup 1 Post-Dose 1: Ad26.RSV.preF (1*10^11 vp) + Fluarix Quadrivalent (Day 1)Group 2 Post-Dose 1: Placebo + Fluarix Quadrivalent (Day 1)Group 1 Post-Dose 2: Placebo (Day 29)Group 2 Post-Dose 2: Ad26.RSV.preF (Day 29)
Respiratory Tract InfectionInfections and infestations10/9011/907/885/90
Blood Pressure IncreasedInvestigations5/904/903/885/90
DiarrhoeaGastrointestinal disorders1/900/902/880/90
GastroenteritisInfections and infestations0/900/902/880/90
LacerationInjury, poisoning and procedural complications0/900/902/880/90
HeadacheNervous system disorders2/901/902/880/90
Injection Site PruritusGeneral disorders1/900/900/882/90
Urinary Tract InfectionInfections and infestations2/902/900/880/90
HypertensionVascular disorders1/900/900/882/90

Baseline characteristics

Age, Continuous
Age, Continuous(years)Group 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)Total
Median64 (60 to 82)66 (60 to 81)65 (60 to 82)
Sex: Female, Male
Sex: Female, Male(Participants)Group 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)Total
Female5756113
Male333467
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Group 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)Total
Hispanic or Latino011
Not Hispanic or Latino8989178
Unknown or Not Reported101
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Group 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)Total
American Indian or Alaska Native000
Asian011
Native Hawaiian or Other Pacific Islander000
Black or African American11819
White7981160
More than one race000
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(Participants)Group 1: Ad26.RSV.preF (1*10^11 vp) Plus Fluarix Then PlaceboGroup 2: Placebo Plus Fluarix Then Ad26.RSV.preF (1*10^11 vp)Total
UNITED STATES9090180
08

Study locations

1 site
  • Coastal Carolina Research Center
    Mount Pleasant, South Carolina 29464, United States
09

References and documents

Publications

  • Sadoff J, De Paepe E, Haazen W, Omoruyi E, Bastian AR, Comeaux C, Heijnen E, Strout C, Schuitemaker H, Callendret B. Safety and Immunogenicity of the Ad26.RSV.preF Investigational Vaccine Coadministered With an Influenza Vaccine in Older Adults. J Infect Dis. 2021 Feb 24;223(4):699-708. doi: 10.1093/infdis/jiaa409. PubMed 32851411 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 4, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03339713
Responsible party
Sponsor
First posted
Nov 13, 2017
Start date
Dec 7, 2017
Primary completion
Jul 23, 2018
Completion
Jul 23, 2018
Results posted
Aug 18, 2021
Last update
Feb 4, 2025

Study contacts

Janssen Vaccines & Prevention B.V. Clinical Trial
study director · Janssen Vaccines & Prevention B.V.

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

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Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: AD26.RSV.PREF

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