A Phase II Trial to Evaluate the Safety and Immunogenicity of BIMERVAX® When Coadministered With Seasonal Influenza Vaccine (SIIV) in Adults Older Than 65 Years of Age Fully Vaccinated Against COVID-19

Phase 2

Completed

• Conditions: SARS CoV 2 Infection; Influenza, Human
• Interventions: Biological: BIMERVAX; Biological: SIIV

• Registration Number: NCT05981846
• Lead Sponsor: Hipra Scientific, S.L.U

Brief Summary

This is a Phase II, randomized, double-blind, multi-centre trial to evaluate the safety and immunogenicity of BIMERVAX® when coadministered with seasonal surface antigen inactivated adjuvanted influenza vaccine (SIIV) in adults older than 65 years of age fully vaccinated against COVID-19.

In this study approximately 300 adults aged 65 or older will be enrolled and followed for 1 month after study treatment. Safety and immunogenicity of all participants will be assessed.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2023-08-07
• Study First Submitted QC: 2023-08-07
• Study First Posted: 2023-08-08
• Study Start: 2023-09-04
• Primary Completion: 2023-10-09
• Study Completion: 2023-11-06
• Status Verified: 2024-02
• Last Update Submitted: 2024-02-23
• Last Update Posted: 2024-02-26

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 279

Inclusion Criteria

1. Adults aged 65 or older at Day 0.
2. Are willing and able to sign the informed consent and can comply with all study visits and procedures.
3. Participant must have received at least a primary scheme of an mRNA vaccine (2 doses). Booster doses or previous COVID-19 infections are allowed. Last dose must have been administered at least 6 months before Day 0. History of COVID-19 infection is allowed if occurred at least >30 days before Day 0.
4. Have a negative Rapid Antigen Test (RAT) at Day 0 before vaccinations.
5. Adults determined by clinical assessment, including medical history and clinical judgement, to be eligible for the study, including adults with pre-existing chronic and stable diseases (non-immunocompromised), if these are stable and well-controlled according to the investigator's judgment.

Exclusion Criteria

6. Acute illness with fever ≥ 38.0°C at Day 0 or within 24 hours prior to vaccination. Afebrile participants with minor illnesses can be enrolled at the discretion of the investigator.
7. Allergy to egg proteins (egg or egg products) or chicken proteins.
8. History of Guillain-Barré syndrome (GBS)
9. History of COVID-19 infection (described as a positive RAT or PCR), in the previous 30 days before Day 0.
10. Other medical or psychiatric condition including recent (within the past year) or active suicidal ideation/behaviour that may increase the risk of study participation or, in the investigator's judgment, make the participant inappropriate for the study.
11. History of severe adverse reaction associated with a vaccine and/or severe allergic reaction (e.g. anaphylaxis) to any component of the study intervention(s).
12. Immunocompromised individuals defined as those with primary and secondary immune deficiencies and those receiving chemotherapy or immunosuppressant drugs other than steroids and glucocorticoids (maximum 30mg/day of prednisone, or equivalent, by any administration route for a maximum of 30 consecutive days), within 90 days prior to vaccination or during the study.
13. Bleeding diathesis or condition associated with prolonged bleeding that would, in the opinion of the investigator, contraindicate intramuscular injection.
14. Receipt of blood-derived immune globulins, blood, or blood-derived products in the past 3 months.
15. Participation in other studies involving study intervention within 28 days prior to screening and/or during study participation.
16. Received any non-study vaccine within 14 days before or after screening. For live or attenuated vaccines, 4 weeks before or after screening.
17. History of a diagnosis or other conditions that, in the judgment of the investigator, may affect study endpoint assessment or compromise participant safety.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
BIMERVAX + SIIV	BIMERVAX	-
BIMERVAX + PLACEBO	BIMERVAX	-
BIMERVAX + SIIV	SIIV	-
SIIV + PLACEBO	SIIV	-

Primary Outcome Measures

Name	Time	Method
Number, percentage, and characteristics of unsolicited local and systemic adverse events (AEs) through the end of the study.	Day 0, Day 7, Day 28
Number and percentage of adverse events of special interest (AESI) through the end of the study	Day 0, Day 7, Day 28
Number, percentage, and characteristics of solicited local and systemic reactions through Day 7 after vaccination.	Day 0, Day 7
Number and percentage of serious adverse events (SAEs) through the end of the study.	Day 0, Day 7, Day 28

Trial Locations

Locations (8)

Hospital Clínico de Valladolid; 🇪🇸 Valladolid, Spain

Hospital Josep Trueta; 🇪🇸 Girona, Spain

Hospital Clínic de Barcelona; 🇪🇸 Barcelona, Spain

Hospital Regional de Málaga; 🇪🇸 Málaga, Spain

Hospital Germans Trias i Pujol; 🇪🇸 Badalona, Barcelona, Spain

Hospital HM Modelo; 🇪🇸 A Coruña, Spain

CAP Centelles; 🇪🇸 Centelles, Barcelona, Spain

Hospital Clínico Universitario de Santiago; 🇪🇸 Santiago De Compostela, A Coruña, Spain