H5N1 Vaccine Study in Japanese Elderly Population Aged 65 Years and Older

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Baxter Healthcare Corporation
ClinicalTrials.gov Identifier:
NCT01774032
First received: January 17, 2013
Last updated: April 7, 2014
Last verified: April 2014
  Purpose

The purpose of this study is to obtain immunogenicity and safety data of an H5N1 pandemic influenza vaccine in a Japanese elderly population aged 65 years and older.


Condition Intervention Phase
Influenza
Biological: H5N1 Influenza Vaccine (Whole Virion, Vero Cell-Derived, Inactivated), non-adjuvanted formulation
Phase 3

Study Type: Interventional
Study Design: Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Prevention
Official Title: An Open-Label Phase 3 Study to Assess Immunogenicity and Safety of a Vero Cell-Derived Whole Virus H5N1 Influenza Vaccine in a Japanese Elderly Population Aged 65 Years and Older

Resource links provided by NLM:


Further study details as provided by Baxter Healthcare Corporation:

Primary Outcome Measures:
  • Co-Primary Evaluation of Immunogenicity by Single Radial Hemolysis (SRH) Assay: Number of participants with antibody response to vaccine strain (A/Indonesia/05/2005) [ Time Frame: Day 43 (42 days after first vaccination, 21 days after second vaccination) ] [ Designated as safety issue: No ]
    Associated with protection 21 days after second vaccination defined as hemolysis area measured by SRH assay ≥25mm^2

  • Co-Primary Evaluation of Immunogenicity by SRH Assay: Number of participants demonstrating seroconversion 21 days after the second vaccination [ Time Frame: Day 43 (42 days after first vaccination, 21 days after second vaccination) ] [ Designated as safety issue: No ]
    'Seroconversion' is defined as either a ≥25mm^2 hemolysis area after the vaccination in case of a negative prevaccination sample (≤4mm^2) or a ≥50% increase in hemolysis area if the prevaccination sample is >4mm^2.

  • Co-Primary Evaluation of Immunogenicity by SRH Assay: Fold increase of antibody response 21 days after the second vaccination as compared to baseline [ Time Frame: Day 43 (42 days after first vaccination, 21 days after second vaccination) ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Evaluation of Immunogenicity by SRH Assay: Number of participants with antibody response to the vaccine strain (A/Indonesia/05/2005) [ Time Frame: Days 22 and 202 ] [ Designated as safety issue: No ]
    Associated with protection 21 days after the first and 180 days after the second vaccination defined as SRH area ≥25mm^2

  • Evaluation of Immunogenicity by SRH Assay: Number of participants demonstrating seroconversion 21 days after the first and 180 days after the second vaccination [ Time Frame: Days 22 and 202 ] [ Designated as safety issue: No ]
    'Seroconversion' is defined as either a ≥25mm^2 hemolysis area after the vaccination in case of a negative prevaccination sample [≤4mm^2] or a ≥50% increase in hemolysis area if the prevaccination sample is >4mm^2.

  • Evaluation of Immunogenicity by SRH Assay: Antibody response 21 days after the first and 21 and 180 days after the second vaccination [ Time Frame: Days 22, 43 and 202 ] [ Designated as safety issue: No ]
  • Evaluation of Immunogenicity by SRH Assay: Fold increase of antibody response 21 days after the first and 180 days after the second vaccination as compared to baseline [ Time Frame: Days 22 and 202 ] [ Designated as safety issue: No ]
  • Evaluation of Immunogenicity by Microneutralization (MN) Assay: Number of participants with antibody response to the vaccine strain (A/Indonesia/05/2005) [ Time Frame: Days 22, 43 and 202 ] [ Designated as safety issue: No ]
    Associated with protection 21 days after the first and 21 and 180 days after the second vaccination defined as MN titer ≥ 1:20

  • Evaluation of Immunogenicity by MN Assay: Number of participants demonstrating seroconversion 21 days after the first and 21 and 180 days after the second vaccination [ Time Frame: Days 22, 43 and 202 ] [ Designated as safety issue: No ]
    'Seroconversion' is defined as a four-fold or greater increase in titer as compared to baseline.

  • Evaluation of Immunogenicity by MN Assay: Number of participants demonstrating either ≥4-fold titer increase compared to baseline if above detection limit OR ≥ 20 titer after vaccination if baseline titer is below detection limit [ Time Frame: Days 22, 43 and 202 ] [ Designated as safety issue: No ]
  • Evaluation of Immunogenicity by MN Assay: Antibody response 21 days after the first and 21 and 180 days after the second vaccination [ Time Frame: Days 22, 43 and 202 ] [ Designated as safety issue: No ]
  • Evaluation of Immunogenicity by MN Assay: Fold increase of antibody response 21 days after the first and 21 and 180 days after the second vaccination as compared to baseline [ Time Frame: Days 22, 43 and 202 ] [ Designated as safety issue: No ]
  • Evaluation of Immunogenicity by Hemagglutination Inhibition (HI) Assay: Number of participants with antibody response to the vaccine strain (A/Indonesia/05/2005) [ Time Frame: Days 22, 43 and 202 ] [ Designated as safety issue: No ]
    Associated with protection 21 days after the first and 21 and 180 days after second vaccination defined as HI titer ≥ 1:40

  • Evaluation of Immunogenicity by HI Assay: Number of participants demonstrating seroconversion 21 days after the first and 21 and 180 days after the second vaccination [ Time Frame: Days 22, 43 and 202 ] [ Designated as safety issue: No ]
    'Seroconversion' is defined as a 4-fold or greater increase in HI titer as compared to baseline

  • Evaluation of Immunogenicity by HI Assay: Antibody response 21 days after the first and 21 and 180 days after the second vaccination [ Time Frame: Days 22, 43 and 202 ] [ Designated as safety issue: No ]
  • Evaluation of Immunogenicity by HI Assay: Fold increase of antibody response 21 days after the first and 21 and 180 days after the second vaccination as compared to baseline [ Time Frame: Days 22, 43 and 202 ] [ Designated as safety issue: No ]
  • Frequency and severity of injection site and systemic reactions until 21 days after the first and second vaccinations [ Time Frame: Through study day 43 ] [ Designated as safety issue: Yes ]
  • Number of participants with fever, malaise or shivering with onset within 7 days after the first and second vaccinations [ Time Frame: Days 1-8 and days 22-29 ] [ Designated as safety issue: Yes ]
  • Frequency and severity of all adverse events (AEs) observed during the entire study period [ Time Frame: Throughout the study period- 8 months ] [ Designated as safety issue: Yes ]

Enrollment: 91
Study Start Date: March 2013
Study Completion Date: October 2013
Primary Completion Date: June 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Influenza Vaccine
One dose of the vaccine will be administered at a volume of 0.5 mL by intramuscular injection into the musculus deltoideus in the upper arm on Day 1 and 22.
Biological: H5N1 Influenza Vaccine (Whole Virion, Vero Cell-Derived, Inactivated), non-adjuvanted formulation

  Eligibility

Ages Eligible for Study:   65 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Participant is 65 years or older at the time of screening.
  • Participant is generally healthy, as determined by the investigator's clinical judgment through collection of medical history and performance of a physical examination.
  • Participant is physically and mentally capable of participating in the study.
  • Participant is willing and able to comply with the requirements of the protocol.

Exclusion Criteria:

  • Participant has a history of infection with H5N1 virus or a history of vaccination with an H5N1 influenza vaccine.
  • Participant is at high risk of contracting H5N1 influenza infection (e.g., poultry workers).
  • Participant currently has or has a history of a significant cardiovascular (including hypertension), respiratory (including asthma), metabolic, neurological (including Guillain-Barré Syndrome and acute disseminated encephalomyelitis), hepatic, rheumatic, autoimmune, hematological, gastrointestinal or renal disorder.
  • Participant has any inherited or acquired immunodeficiency.
  • Participant has a disease or is currently undergoing a form of treatment or was undergoing a form of treatment within 30 days prior to study entry that can be expected to influence immune response. Such treatment includes, but is not limited to: systemic or inhaled corticosteroids, radiation treatment or other immunosuppressive or cytotoxic drugs.
  • Participant has a history of severe allergic reactions or anaphylaxis.
  • Participant has a rash, dermatologic condition or tattoos which may interfere with injection site reaction rating.
  • Participant has received a blood transfusion or immunoglobulins within 90 days prior to study entry.
  • Participant has donated blood or plasma within 30 days prior to study entry.
  • Participant has received any influenza or any live vaccine within 4 weeks or any other inactivated vaccine within 2 weeks prior to vaccination in this study.
  • Participant has a functional or surgical asplenia.
  • Participant has a known or suspected problem with alcohol or drug abuse.
  • Participant has been exposed to an investigational product (IP) within 30 days prior to enrollment or is scheduled to participate in another clinical study involving an IP or investigational device during the course of this study.
  • Participant is a family member or employee of the investigator.
  • Participant has any other condition that disqualifies his/her participation in the study in the opinion of the investigator.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01774032

Locations
Japan
PS Clinic
Fukuoka City, Japan, 812-0025
Osaka Pharmacology Clinical Research Hospital (OPHAC Hospital)
Osaka City, Japan, 532-0003
Sponsors and Collaborators
Baxter Healthcare Corporation
Investigators
Study Director: Nirjhar Chatterjee, MD Baxter Innovations GmbH
  More Information

No publications provided

Responsible Party: Baxter Healthcare Corporation
ClinicalTrials.gov Identifier: NCT01774032     History of Changes
Other Study ID Numbers: 811201
Study First Received: January 17, 2013
Last Updated: April 7, 2014
Health Authority: Japan: Pharmaceuticals and Medical Devices Agency

Additional relevant MeSH terms:
Influenza, Human
Orthomyxoviridae Infections
RNA Virus Infections
Virus Diseases
Respiratory Tract Infections
Respiratory Tract Diseases

ClinicalTrials.gov processed this record on August 26, 2014