- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05213728
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))
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) Expressing GI.1 VP1 Administered to Healthy Adult Volunteers
Study Overview
Detailed Description
Primary Objective
To determine the immunogenicity of the VXA-G1.1-NN oral vaccine administered via multiple sub-doses over a 4-hour period to deliver a total dose of
1E11 IU ±0.5 log Secondary Objectives
- To determine the safety and tolerability of the VXA-G1.1-NN oral vaccine administered via multiple sub-doses over a 4-hour period to deliver a total dose of 1E11 IU ±0.5 log
This is an open-label study in healthy adult participants aged 18-55 years old. The study will enroll 8 subjects to a single treatment cohort, all of whom will receive a single 1E11 IU± 0.5 log at Day 1. This dose will be administered in a step wise manner over 4 hours with 1/3 of the dose administered at T=0, 1/3 of the dose administered at T= 2 hours and 1/3 of the dose administered at T=4 hours.
The study will include a Screening Period, Active Period (Day 1 to Day 29, 4 weeks post vaccination) and a Safety Follow-up Period through 12 months post vaccination (Day 365). In addition, participants will be contacted by phone during the Safety Follow-up Period to assess for Serious Adverse Events (SAEs), AEs of Special Interest (AESIs) and New Onset of Chronic Illness (NOCIs).
After signing an informed consent, participants will undergo screening assessments to determine study eligibility within a 30-day screening period. Eligible participants will be enrolled and receive their first dose of study vaccine on Day 1.
During the Active Period, participants will record any potential solicited symptoms of reactogenicity daily for 1 week post study vaccination. Participants will return to the site as specified in the Schedule of Activities to have safety assessments and samples collected for evaluation of immunogenicity. Approximately 8 subjects will be vaccinated in the active phase.
The following study visits and remote contacts will be conducted during the study:
Active Period:
- Screening Period (Days -30 to -1)
- Day 1 Visit (Baseline assessments, vaccination, sample collection)
- Day 8 Visit (Safety assessments, sample collection)
- Day 29 End of Active Period; (Safety assessments, sample collection)
Safety Follow-Up Period:
- Day 180 (follow-up phone call for safety)
- Day 365 (follow-up phone call for safety): Study completion
Study Type
Enrollment (Actual)
Phase
- Phase 1
Contacts and Locations
Study Locations
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California
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Cypress, California, United States, 90630
- AltaSciences LA
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- 18 to 55 years old, inclusive, at day of signing Informed Consent Form (ICF)
- General good health, without significant uncontrolled medical illness, based on medical history, physical examination, vital signs, and clinical laboratories (CBC, chemistry, and urinalysis) as determined by the investigator in consultation with the Research Monitor and Sponsor
- Body mass index (BMI) between 17 and 35 kg/m2 at screening
- Capable of giving signed informed consent which includes compliance with the requirements and restrictions listed in the ICF and in this protocol
- Available for all planned visits and phone calls, and willing to complete all protocol-defined procedures and assessments (including ability and willingness to swallow multiple small enteric-coated tablets per study dose)
Female participants must provide a negative pregnancy test at each required visit and fulfill one of the following criteria:
- At least 1 year post-menopausal (defined as amenorrhea for ≥12 consecutive months prior to Screening without alternative medical cause)
- Surgically sterile
- Use of oral, implantable, transdermal or injectable contraceptives for 30 days prior to initial vaccination and until 60 days after the last vaccination. The form of contraception must be approved by the Investigator
- A reliable form of contraception must be approved by the Investigator (e.g., double barrier method, Depo-Provera, intrauterine device, Norplant, oral contraceptives, contraceptive patches)
- Not be sexually active (abstinent) or be in a relationship with partner who is sterile (must be discussed with site staff and documented)
- Male participants must agree not to father a child or donate sperm, as well as to use contraception/barrier (a male condom) or be abstinent from heterosexual intercourse during the study active period (Day 29)
Exclusion Criteria:
- Presence of significant uncontrolled medical or psychiatric illness (acute or chronic) including institution of new medical/surgical treatment or significant dose alteration for uncontrolled symptoms or drug toxicity within 3 months of screening and reconfirmed at baseline
- Cancer, or received treatment for cancer, within past 3 years (excluding basal cell carcinoma or squamous cell carcinoma)
- Presence of immunosuppression or medical condition possibly associated with impaired immune responsiveness, including diabetes mellitus 1 and 2
History of irritable bowel disease or other inflammatory digestive or gastrointestinal condition that could affect the distribution/safety evaluation of an orally administered vaccine targeting the mucosa of the small intestine Norwalk GI.1 (VXA-G1.1-NN) Protocol No. VXA-NVV-106
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_________________________________________________________________________________ Version 1.2 Confidential Page 11 of 42 Date: 04 Jan 2022
Such conditions may include but are not limited to:
- Esophageal Motility Disorder
- Malignancy
- Malabsorption
- Pancreaticobiliary disorders
- Irritable bowel syndrome
- Inflammatory Bowel Disease
- Surgical Resection
- GERD
- Hiatal Hernia
- Peptic Ulcer (History of cholecystectomy is not exclusionary)
- History of any form of angioedema
- History of serious reactions to any vaccination such as anaphylaxis, respiratory problems, hives or abdominal pain
- Diagnosed bleeding disorder or significant bruising or bleeding difficulties that could make blood draws problematic
- Any condition that resulted in the absence or removal of the spleen
- Acute disease within 72 hours prior to vaccination defined as the presence of a moderate or severe illness (as determined by the Investigator through medical history and physical exam); assessment may be repeated during screening period
- Presence of a fever ≥ 38oC measured orally at baseline; assessment may be repeated during screening period
- Laboratory values outside the range of normal for platelet counts and the following coagulation tests: PT/INR, aPTT and fibrinogen
Any of the following history or conditions that may lead to higher risk of clotting events and/or thrombocytopenia:
- Family or personal history of bleeding or thrombosis
- History of heparin-related thrombotic events, and/or receiving heparin treatments
- History of autoimmune or inflammatory disease
Presence of any of the following conditions known to increase risk of thrombosis within 6 months prior to screening:
- Recent surgery other than removal/biopsy of cutaneous lesions
- Immobility (confined to bed or wheelchair for 3 or more successive days)
- Head trauma with loss of consciousness or documented brain injury
- Receipt of anticoagulants for prophylaxis of thrombosis
- Recent clinically significant infection
- Any significant hospitalization within the last year which in the opinion of Norwalk GI.1 (VXA-G1.1-NN) Protocol No. VXA-NVV-106
- Any other condition that in the clinical judgment of the investigator would jeopardize the safety or rights of a participant taking in the study, would render the participant unable to comply with the protocol or would interfere with the evaluation of the study endpoints
- Positive human immunodeficiency virus (HIV), Hepatitis B surface antigen (HBsAg) or hepatitis C virus (HCV) tests at screening visit
- Positive urine drug screen for drugs of abuse at screening
- Positive breath or urine alcohol test at screening and baseline
- Receipt of a licensed vaccine within 14 days prior to baseline vaccination or planned administration during the study active period
- Use of antibiotics, proton pump inhibitors, H2 blockers or antacids within 7 days prior to study drug administration or planned use during the active study period
- Use of medications known to affect the immune function (e.g., systemic corticosteroids and others) within 2 weeks before study vaccination or planned use during the active period
- Daily use of nonsteroidal anti-inflammatory drugs within 7 days prior to study vaccination or planned use during the active study period
- Administration of any investigational vaccine, drug or device within 8 weeks preceding study vaccination (Day 1), or planned use within the duration of the study
- Donation or use of blood or blood products within 30 days prior to study vaccination or planned donation during the active study period
- History of drug, alcohol or chemical abuse within 1 year of screening
- History of hypersensitivity or allergic reaction to any component of the investigational vaccine, including but not limited to fish gelatin
Study Plan
How is the study designed?
Design Details
- Primary Purpose: PREVENTION
- Allocation: NA
- Interventional Model: SINGLE_GROUP
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: Cohort 1
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.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Rate of Solicited Symptoms of Reactogenicity
Time Frame: Up to Day 8
|
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
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To assess the induction of VP1-specific Immunoglobin A (IgA) antibody-secreting cells (ASC) by ELISpot assay
Time Frame: Change from baseline at Day 8
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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
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To assess histo-blood group antigen (HBGA) blocking antibodies by blockade titer (BT50)
Time Frame: Change from baseline at Day 29
|
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
Time Frame: Change from baseline at Day 29
|
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
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To assess the VP1-specific serum Immunoglobin A (IgA) by Mesoscale Discovery (MSD) assay
Time Frame: Change from baseline at Day 29
|
Change from baseline in VP1-specific serum IgG by Mesoscale Discovery (MSD) will be evaluated at Day 29
|
Change from baseline at Day 29
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- VXA-NVV-106
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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