A/H5N1/LT Dose Ranging Study
A Randomized Blinded, LT Dose-ranging Study to Assess the Immunogenicity and Safety of Different Doses of LT Adjuvant Patch Administered in Conjunction With Different Doses of Inactivated Influenza A/H5N1 Vaccine in Healthy Adults
2 other identifiers
interventional
500
1 country
6
Brief Summary
This is a Phase 2, randomized, blinded, clinical trial. Up to 500 eligible subjects will be enrolled and randomized in a 1:2:2:1:2:2 ratio into one of six groups, and vaccinated in this study. Subjects will receive an intramuscular injection of the influenza A/H5N1 (low or high dose) on Day 0 with or without a patch (low or high dose).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_2
Started May 2009
6 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
May 1, 2009
CompletedFirst Submitted
Initial submission to the registry
May 22, 2009
CompletedFirst Posted
Study publicly available on registry
May 27, 2009
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 1, 2010
CompletedStudy Completion
Last participant's last visit for all outcomes
July 1, 2011
CompletedResults Posted
Study results publicly available
March 13, 2014
CompletedDecember 10, 2021
December 1, 2021
8 months
May 22, 2009
January 30, 2014
December 9, 2021
Conditions
Outcome Measures
Primary Outcomes (1)
Assess the Proportion of Subjects in Each Dose Group Achieving Seroconversion and Seroprotection for HI Antibody Titer Through Day 28.
Seroconversion is defined as either 1) baseline HI titer \< 1:10 and a post-vaccination HI titer ≥ 1:40, or 2) baseline HI titer ≥ 1:10 and a minimum four-fold rise. Seroprotection is defined as a post-vaccination HI antibody titer ≥ 1:40. FDA/EMEA criterion for seroconversion was to meet or exceed 40%. FDA/EMEA criterion for seroprotection was to meet or exceed 70%.
Day 28
Secondary Outcomes (2)
Safety of A/H5N1 Vaccine IM Injection With and Without an LT Adjuvant Patch
6 months
Evaluate Treatment Group HI Responses Against US FDA Guidance for Industry: Clinical Data Needed to Support the Licensure of Pandemic Influenza Vaccines (May 2007) and EMA CPMP/BWP/214/96 Criteria for Immunogenicity
Day 28
Study Arms (6)
Group 1: 30 µg HA, no LT patch
EXPERIMENTALA/H5N1 Vaccine 30 µg HA i.m. on Day 0
Group 2: 30 µg HA + 50 µg LT patch
EXPERIMENTALA/H5N1 Vaccine 30 µg HA i.m. + LT adjuvant patch containing 50 µg of LT on Day 0
Group 3: 30 µg HA + 100 µg LT patch
EXPERIMENTALA/H5N1 Vaccine 30 µg HA i.m. + LT adjuvant patch containing 100 µg of LT on Day 0
Group 4: 45 µg HA, no LT patch
EXPERIMENTALA/H5N1 Vaccine 45 µg HA i.m. on Day 0
Group 5: 45 µg HA + 50 µg LT patch
EXPERIMENTALA/H5N1 Vaccine 45 µg HA i.m. + LT adjuvant patch containing 50 µg of LT on Day 0
Group 6: 45 µg HA + 100 µg LT patch
EXPERIMENTALA/H5N1 Vaccine 45 µg HA i.m. + LT adjuvant patch containing 100 µg of LT on Day 0
Interventions
A/H5N1 Low Dose
LT Adjuvant Patch Low Dose
Eligibility Criteria
You may qualify if:
- Healthy adult male or females 18 to 49 years of age (inclusive)
- Signed Informed Consent
- Women who are not post-menopausal or surgically sterile must have a negative serum or urine pregnancy test at screening and within 24 hours of vaccination with understanding (through informed Consent process) to not become pregnant over the duration of the study, and must agree to employ an effective form of birth control for the duration of the study. Acceptable forms of birth control are: abstinence, hormonal contraceptives (oral, injectable, implant, patch, ring), double-barrier contraceptives (condom or diaphragm, with spermicide) and IUD
You may not qualify if:
- Clinically significant laboratory abnormalities at screening
- Abnormalities at physical examination \[as determined by the Toxicity Grading Scale (grade 1-4)\]
- Known allergies to any component of the vaccine
- Known egg protein allergy
- Known allergies to adhesives
- Known disturbance of coagulation
- Participated in research involving investigational product within 45 days before planned date of vaccination
- Donated or received blood or blood products such as plasma within the past 45 days
- Received any licensed vaccines within 2 weeks (for inactivated vaccines) or 4 weeks (for live vaccines) prior to planned date of vaccination
- Ever received investigational enterotoxigenic E. coli, or LT (R192G) or NasalFlu, Berna Biotech Ltd
- Ever received cholera toxin or vaccine (e.g. Orochol, Dukoral)
- History of abdominal surgery (excluding C-Section, hysterectomy, cosmetic surgery, liposuction, appendectomy, cholecystectomy, ventral hernia repair, and other surgeries not pertaining to gastrointestinal problems) or history of, or recent acute gastrointestinal (GI) illness
- Previous vaccination with a pandemic vaccine or previous proven contact with A/H5N1 wild type virus (contact with an individual with laboratory-confirmed A/H5N1 infection or contact with an animal which died as a result of A/H5N1 infection)
- Recent or regular use of oral, topical or injected steroid medications within 45 days prior to vaccination
- Use of immunosuppressive systemic steroid medications including inhaled steroids within three months prior to vaccination
- +18 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Intercell USA, Inc.lead
- Department of Health and Human Servicescollaborator
Study Sites (6)
Advanced Clinical Research Institute
Anaheim, California, 92801, United States
Solano Clinical Research
Vallejo, California, 94589, United States
Miami Research Associates
Miami, Florida, 33143, United States
Accelovance
South Bend, Indiana, 46601, United States
Johnson County Clinical Trials
Lenexa, Kansas, 66219, United States
Jean Brown Research
Salt Lake City, Utah, 84124, United States
Results Point of Contact
- Title
- Head Clinical Development
- Organization
- Valneva Austria GmbH
Study Officials
- PRINCIPAL INVESTIGATOR
Eric Sheldon, MD
Miami Research Associates
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- OTHER
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
May 22, 2009
First Posted
May 27, 2009
Study Start
May 1, 2009
Primary Completion
January 1, 2010
Study Completion
July 1, 2011
Last Updated
December 10, 2021
Results First Posted
March 13, 2014
Record last verified: 2021-12