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
This date has not been verified as actual or estimated.
Primary Completion
January 2010
Actual (reported)
Study Completion
July 2011
Actual (reported)
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).
Registry Overview
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
Recruitment status
completed
Actual enrollment (reported)
500 participants
Study completion date
July 2011
Actual (reported)
Listed locations
1 countries · 6 sites
Trial Relationships
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Related Scientific Literature
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Study Timeline
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
Study Start
May 2009
Date type not reported
This date has not been verified as actual or estimated.
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
EXPERIMENTAL
A/H5N1 Vaccine 30 µg HA i.m. on Day 0
Biological: A/H5N1
Group 2: 30 µg HA + 50 µg LT patch
EXPERIMENTAL
A/H5N1 Vaccine 30 µg HA i.m. + LT adjuvant patch containing 50 µg of LT on Day 0
Biological: A/H5N1Biological: LT Adjuvant Patch
Group 3: 30 µg HA + 100 µg LT patch
EXPERIMENTAL
A/H5N1 Vaccine 30 µg HA i.m. + LT adjuvant patch containing 100 µg of LT on Day 0
Interventions
A/H5N1Biological
A/H5N1 Low Dose
Group 1: 30 µg HA, no LT patchGroup 2: 30 µg HA + 50 µg LT patchGroup 3: 30 µg HA + 100 µg LT patch
A/H5N1Biological
A/H5N1 High Dose
Eligibility Criteria
Age18 Years - 49 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)
You may qualify if:
Healthy adult male or females 18 to 49 years of age (inclusive)
500 participants (actual enrollment reported by the registry).
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 2009
Date type not reported
This date has not been verified as actual or estimated.
NCT00971906
Immunogenicity, Safety and Tolerability of Two Doses of Adjuvanted and Non-adjuvanted Swine Origin A/H1N1 Monovalent Influenza Vaccine in Healthy Subjects 18 or More Years of Age
A/H5N1 Vaccine 45 µg HA i.m. + LT adjuvant patch containing 50 µg of LT on Day 0
Biological: A/H5N1Biological: LT Adjuvant Patch
Group 6: 45 µg HA + 100 µg LT patch
EXPERIMENTAL
A/H5N1 Vaccine 45 µg HA i.m. + LT adjuvant patch containing 100 µg of LT on Day 0
Biological: A/H5N1Biological: LT Adjuvant Patch
Group 4: 45 µg HA, no LT patch
Group 5: 45 µg HA + 50 µg LT patch
Group 6: 45 µg HA + 100 µg LT patch
LT Adjuvant PatchBiological
LT Adjuvant Patch Low Dose
Group 2: 30 µg HA + 50 µg LT patchGroup 5: 45 µg HA + 50 µg LT patch
LT Adjuvant PatchBiological
LT Adjuvant Patch High Dose
Group 3: 30 µg HA + 100 µg LT patchGroup 6: 45 µg HA + 100 µg LT patch
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
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.
Primary Completion
January 2010
Actual (reported)
Study Completion
July 2011
Actual (reported)
Last Updated
December 10, 2021
Results First Posted
March 13, 2014
Record last verified: 2021-12
Source record
Download the complete ClinicalTrials.gov record imported by Syfrah, including fields not shown in this page. The registry may contain a newer revision.
Source: ClinicalTrials.gov.
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