A Phase 1, Open-label, Safety and Immunogenicity Study of an Oral Multi-dose Administration Regimen With an Adenoviral-vector Based Tablet Norovirus Vaccine (VXA-G1.1-NN) Administered to Healthy Adult Volunteers
(VXA-G1-1-NN)
Sponsor study identifier
interventional
8
1 country
1
Study Start
January 24, 2022
Actual (reported)Primary Completion
February 1, 2022
Actual (reported)Study Completion
February 24, 2022
Actual (reported)Subjects will receive multiple sub-doses over a 4-hour period to deliver a total overall dose of 1E11. Evaluations of immunogenicity, safety, and tolerability will be evaluated. The active period consists of data collection at Day 1, Day 8, and Day 29. Safety follow-up continues by phone screen at Day 180 and Day 365.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
February 24, 2022
Actual (reported)Click on a node to explore related trials.
Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
January 18, 2022
Actual (reported)January 24, 2022
Actual (reported)January 28, 2022
Actual (reported)February 1, 2022
Actual (reported)February 24, 2022
Actual (reported)Rate of Solicited Symptoms of Reactogenicity
To assess the safety and tolerability of an oral tableted vaccine by collection of solicited symptoms of vaccine reactogenicity recorded daily using a subject diary card for 1 week post initial vaccination at Day 1.
Up to Day 8
To assess the induction of VP1-specific Immunoglobin A (IgA) antibody-secreting cells (ASC) by ELISpot assay
Change from baseline in VP1-specific Immunogolobin A (IgA) antibody-secreting cells (ASC) by ELISpot assay will be evaluated at Day 8
Change from baseline at Day 8
To assess histo-blood group antigen (HBGA) blocking antibodies by blockade titer (BT50)
Change from baseline in histo-blood group antigen (HBGA) blocking antibodies evaluated at Day 29
Change from baseline at Day 29
To assess VP1-specific serum Immunoglobin G (IgG) by Mesoscale Discovery (MSD) assay
Change from baseline in VP1-specific Immunoglobin G (IgG) by Mesoscale Discovery (MSD) assay will be evaluated at Day 29
Change from baseline at Day 29
To assess the VP1-specific serum Immunoglobin A (IgA) by Mesoscale Discovery (MSD) assay
Change from baseline in VP1-specific serum IgG by Mesoscale Discovery (MSD) will be evaluated at Day 29
Change from baseline at Day 29
Single 1E11 dose administered via multiple sub-doses over a 4-hour period in adults (18-55 yrs).
Norovirus GI.1 Norwalk VP1 Vaccine (VXA-G1.1-NN) E1/E3-Deleted Replication-Defective Recombinant Adenovirus 5 with Adjuvant Oral Tablet Vaccine.
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
AltaSciences LA
Cypress, California, 90630, United States
James Cummings, MD
Vaxart, Inc.
8 participants (actual enrollment reported by the registry).
First Submitted
January 18, 2022
First Posted
January 28, 2022
Study Start
January 24, 2022
Actual (reported)Contact the study team to confirm eligibility.
Primary Completion
February 1, 2022
Actual (reported)Study Completion
February 24, 2022
Actual (reported)Last Updated
June 21, 2024
Record last verified: 2022-09
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Source: ClinicalTrials.gov.
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