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COVID-19: A Phase 3 Study to Evaluate Safety, Reactogenicity, and Immunogenicity of Co-administration of Ad26.COV2.S and Influenza Vaccines in Healthy Adults 18 Years of Age and Older

COVID-19: A Randomized, Double-blind, Phase 3 Study to Evaluate Safety, Reactogenicity, and Immunogenicity of Co-administration of Ad26.COV2.S and Influenza Vaccines in Healthy Adults 18 Years of Age and Older

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2021-003953-43-BE
Enrollment
1100
Registered
2021-09-23
Start date
2021-09-23
Completion date
Unknown
Last updated
2023-01-30

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

Conditions

Healthy Volunteers (Prevention of COVID-19 and influenza) MedDRA version: 23.1 Level: LLT Classification code 10084465 Term: COVID-19 vaccination System Organ Class: 100000004865 MedDRA version: 21.1 Level: LLT Classification code 10059430 Term: Influenza immunization System Organ Class: 100000004865

Interventions

Sponsors

Janssen Vaccines & Prevention B.V.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Participant is male or female aged =18 years of age, on the day of signing the ICF. a. Groups 3 and 4 only: Participant is male or female aged =65 years of age, on the day of signing the ICF. In Belgium, only participants aged =65 years of age will be enrolled. 2. Participant must be healthy, in the investigator’s clinical judgment, as confirmed by medical history, physical examination, and vital signs performed at screening. Participants may have underlying illnesses, as long as the symptoms and signs are medically controlled. 3. Participant either received complete primary vaccination with an authorized/licensed COVID-19 vaccine (completed =6 months prior to the last vaccination received) or is COVID-19 vaccine-naïve. 4. In the investigator’s clinical judgment, the participant may have a stable and well-controlled medical condition including comorbidities associated with an increased risk of progression to severe COVID-19) (including stable/well controlled HIV infection). If participants are on medication for a medical condition (including comorbidities associated with an increased risk of progression to severe COVID-19), the medication dose cannot have been modified within 4 weeks preceding vaccination. Participants will be included on the basis of relevant medical history at the investigator’s discretion. 5. Contraceptive (birth control) use by participants should be consistent with local regulations regarding the acceptable methods of contraception for those participating in clinical studies. Before randomization, participants who were born female must be either a. Not of childbearing potential b. Of childbearing potential and practicing a highly effective method of contraception and agrees to remain on such a method of contraception from signing the informed consent until 3 months after the administration of the last study vaccine. Use of hormonal contraception should start at least 28 days before the first administration of study vaccine. The investigator should evaluate the potential for contraceptive method failure (eg, noncompliance, recently initiated) in relationship to the first vaccination. 6. All participants who were born female and are of childbearing potential must: a. Have a negative highly sensitive urine pregnancy test at screening b. Have a negative highly sensitive urine pregnancy test on the day of vaccination prior to each study vaccine administration. 7. Participant agrees to not donate or receive bone marrow, blood, and blood products from the administration of the study vaccine until 3 months after receiving the study vaccines Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 900 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 200

Exclusion criteria

Exclusion criteria: 1. Participant has a clinically significant acute illness (this does not include minor illnesses such as diarrhea or mild upper respiratory tract infection) or temperature =38.0ºC (100.4°F) within 24 hours prior to the planned dose of study vaccine. 2. Participant has a history of malignancy within 1 year before screening (exceptions are squamous and basal cell carcinomas of the skin and carcinoma in situ of the cervix, or malignancies considered cured with minimal risk of recurrence per investigator’s clinical judgment). 3. Participant has a known allergy or history of anaphylaxis or other serious adverse reactions to vaccines or their excipients (including specifically the excipients of the study vaccine) 4. Participant has a history of severe allergic reactions (eg, anaphylaxis) to any component of the seasonal quadrivalent influenza vaccines, including egg protein, or following a previous dose of any influenza vaccine. 5. Participant has an abnormal function of the immune system resulting from: a. Clinical conditions (eg, autoimmune disease or immunodeficiency) are expected to have an impact on the immune response elicited by the study vaccine. Participants with autoimmune diseases (eg, autoimmune thyroiditis, autoimmune inflammatory rheumatic diseases such as rheumatoid arthritis and type 1 diabetes) that are stable and controlled without the use of systemic immunomodulators and glucocorticoids may be enrolled at the discretion of the investigator. b. Chronic or recurrent use of systemic corticosteroids within 6 months before administration of the study vaccine and during the treatment period of the study at immunosuppressive doses. An immunosuppressive steroid dose is considered as >20 mg prednisone or equivalent daily for 2 consecutive weeks. c. Administration of antineoplastic and immunomodulating agents or radiotherapy within 6 months before administration of the first study vaccine and during the treatment period of the study. 6. Participant has a history of any neurological disorders or seizures including Guillain-Barré syndrome, with the exception of febrile seizures during childhood. 7. Participant received treatment with immunoglobulins within 3 months or exogenous blood products (autologous blood transfusions are not exclusionary) or blood products within 4 months before the administration of the first study vaccine or plans to receive such treatment during treatment period of the study. 8. Participant has history of TTS or heparin-induced thrombocytopenia and thrombosis (HITT). 9. Participant has history of capillary leak syndrome. 10. Participant received or plans to receive: a. Licensed live attenuated vaccines - within 28 days before or after planned administration of the first or subsequent study vaccines. b. Other licensed (not live) vaccines - within 14 days before or after planned administration of the first or subsequent study vaccines. 11. Participant received or plans to receive a SARS-CoV-2 vaccine less than 6 months prior to first study vaccination or during the course of this study (other than study vaccination). 12. Participant received vaccination with a seasonal influenza vaccine for the current influenza season in the Northern Hemisphere. 13. Participant received an investigational drug (including any investigational agent for COVID-19 prophylaxis) or used an invasive investigational medical device within 30 days or received an investigational vaccine within 6 months before the administration of the stu

Design outcomes

Primary

MeasureTime frame
Main Objective: 1. To demonstrate the NI of the humoral immune response of the 4 influenza vaccine strains after concomitant administration of the Ad26.COV2.S vaccine and a seasonal quadrivalent standard-dose influenza vaccine versus the administration of a seasonal quadrivalent standard-dose influenza vaccine administered alone. 2. To demonstrate the NI of the binding antibody after concomitant administration of Ad26.COV2.S vaccine and a seasonal quadrivalent standard-dose influenza vaccine versus the administration of Ad26.COV2.S vaccine administered alone.;Secondary Objective: 1.To assess safety and reactogenicity of a single dose of Ad26.COV2.S vaccine when administered separately or concomitantly with a seasonal quadrivalent standard/high-dose influenza vaccine in participants aged 65 years and older 2.To assess the humoral immune response against the 4 influenza vaccine strains after concomitant administration of the Ad26.COV2.S and a quadrivalent high-dose influenza vaccine vs the high-dose influenza vaccine alone, and of Ad26.COV2.S after concomitant administration versus alone. 3.To assess the humoral response to SARS CoV-2 after the concomitant administration of Ad26.COV2.S and a seasonal quadrivalent standard/high-dose influenza vaccine versus the Ad26.COV2.S vaccine alone in naïve individuals 4.To compare seroconversion and assess seroprotection rates against the 4 influenza vaccine strains after the concomitant administration of Ad26.COV2.S and a seasonal quadrivalent influenza vaccine versus the seasonal quadrivalent influenza vaccine alone;Primary end point(s): 1. Antibody hemagglutinin inhibition (HI) titers as measured by hemagglutinin inhibition assay (HAI) titers (geometric mean titers [GMTs]) against each of the 4 influenza vaccine strains at 28 days after the administration of a seasonal quadrivalent standard-dose influenza vaccine. 2. Antibody titers as measured by S enzyme-linked immunosorbent assay (S-ELISA) titers (geometric mean concentra

Secondary

MeasureTime frame
Secondary end point(s): 1. Solicited local (injection site) and systemic AEs for 7 days after each vaccination. 2. Unsolicited AEs for 28 days after each vaccination. 3. SAEs, MAAEs, and AESIs throughout the study. 4. AEs leading to withdrawal from the study throughout the study. 5. Antibody HI titers as measured by hemagglutinin inhibition (HAI) assay titers (GMTs) against each of the 4 influenza vaccine strains, 28 days after the administration of a seasonal quadrivalent standard-dose influenza vaccine. 6. Antibody titers as measured by S enzymelinked immunosorbent assay (S-ELISA) titers (GMC), 28 days after administration of Ad26.COV2.S vaccine. 7. Antibody titers as measured by S-ELISA titers (GMC), 28 days after the administration of Ad26.COV2.S vaccine. 8. Seroconversion is defined for each of the 4 influenza vaccine strains at 28 days after the administration of a seasonal quadrivalent (high-dose and standard dose) influenza vaccine: - HI titer =1:40 in participants with a pre-vaccination HI titer of <1:10, or - a =4-fold HI titer increase in participants with a pre-vaccination HI titer of =1:10. 9. Seroprotection is defined for each of the 4 influenza vaccine strains as HI titer =1:40 at 28 days after the administration of a seasonal quadrivalent (high-dose and standard-dose) influenza vaccine.;Timepoint(s) of evaluation of this end point: - 7 and 28 days after vaccination - SAEs, MAAEs, and AESIs throughout the study.

Countries

Belgium, Poland, Spain, United States

Contacts

Public ContactClinical Registry Group

Janssen Research & Development

ClinicalTrialsEU@its.jnj.com

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026