This is a single center, randomized, double-blinded, controlled, Phase I, small targeted prospective study in healthy male and non-pregnant female subjects, 18 to 49 years old, inclusive, designed to determine the safety, reactogenicity, and immunogenicity of an intramuscular subvirion inactivated monovalent influenza A/H5N1 (HA of A/Indonesia/05/2005) virus vaccine manufactured by Sanofi Pasteur administered at 3.75 mcg per dose given with or without AS03 adjuvant manufactured by GSK. In the study, each subject will receive two doses administered 28 days apart. This study will use a systems biology approach to assess the human early gene and protein signatures expressed at Days 1, 3, 7, and 28 after the first vaccination. The systems data will be integrated with immunogenicity and reactogenicity data to develop a systems model of the human immune response to A/H5N1 vaccine with or without AS03 adjuvant.
The long term goals of this project are to identify RNA or protein biomarkers within 1 to 7 days after vaccination in peripheral blood that will predict a successful immune response and protection against disease. Adjuvants are used to boost the response of vaccines by stimulating the innate immune response. However, the exact mechanism and safety of adjuvants is still debated. Systems biology is the study of complex biological processes as integrated systems with many interacting components. The goal of systems biology is to make biology more predictive. This proposal will use a systems biology approach to identify successful immunization biomarkers. The study will use fresh blood samples and patient data collected in the proposed VTEU-funded study. At selected time points, volunteers' blood samples will be collected and immediately processed. Using these specimens, we will identify and quantify changes in the whole transcriptome and proteome of the major immune cells to identify and quantify changes in gene expression. We will integrate the changes in gene expression with the changes in the immune cells response. We will use mathematical modeling of the accumulated data to identify RNA or protein biomarkers that significantly correlate with the observed serum hemagglutination inhibition assay (HAI) response,cytokine/chemokine response, and cell mediated immunity (CMI) responses. Ultimately, the predictive biomarkers will be the foundation for a simple, rapid, inexpensive test to quickly show protection against a pathogen or foreign agent after vaccination. This is a single center, randomized, double-blinded, controlled, Phase I, small targeted prospective study in healthy male and non-pregnant female subjects, 18 to 49 years old, inclusive, designed to determine the safety, reactogenicity, and immunogenicity of an intramuscular subvirion inactivated monovalent influenza A/H5N1 (HA of A/Indonesia/05/2005) virus vaccine manufactured by Sanofi Pasteur administered at 3.75 mcg per dose given with or without AS03 adjuvant manufactured by GSK. In the study, each subject will receive two doses administered 28 days apart.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Enrollment
20
3.75 mcg of H5N1 hemagglutinin plus AS03, will be administered in 2 doses 28 days apart.
3.75 mcg of H5N1 hemagglutinin plus AS03 or 3.75 mcg of H5N1 hemagglutinin alone will be administered in two doses 28 days apart.
Vanderbilt University - Pediatric - Vanderbilt Vaccine Research Center
Nashville, Tennessee, United States
GMT of neutralizing antibody, proportion of subjects achieving a serum neutralizing antibody titer of 1:40 or greater, and frequency of 4-fold or greater increases of neutralizing antibodies in each group against the subvirion inactivated A/H5N1 virus
Time frame: Approximately Days:1, 3, 7 and 28, after receipt of the first dose of vaccine.
Occurrence of vaccine associated serious adverse events (SAEs) from the time of first vaccination through 13 months after the first vaccination.
Time frame: Day 0 through 13 months after receipt of the first dose of vaccine.
Occurrence of solicited local and systemic reactogenicity in the 8 days (Days 0 through Day 7) after each vaccination.
Time frame: Day 0 through Day 7 after each dose of vaccine
Geometric mean titer (GMT) of the hemagglutination inhibition assay (HAI) antibody, proportion of subjects achieving serum HAI antibody titer 1:40 or greater, & frequency of 4-fold or greater increases of HAI antibodies in each group against the vaccine.
Time frame: Approximate Days: 1, 3, 7 and 28 after receipt of the first dose of vaccine
GMT of neutralizing antibody, proportion of subjects achieving a serum neutralizing antibody titer of 1:40 or greater, and frequency of 4-fold or greater increases of neutralizing antibodies in each group against the subvirion inactivated A/H5N1 virus
Time frame: 28 days after receipt of the second dose of vaccine (approximately Day 56).
GMT of HAI antibody, proportion of subjects achieving a serum HAI antibody titer of 1:40 or greater, and frequency of 4-fold or greater increases of HAI antibodies in each group against the subvirion inactivated A/H5N1 virus vaccine
Time frame: 28 days after receipt of the second dose of vaccine (approximately Day 56).
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.