Phase 1-2, Randomized, Multi-Center, Double-Blind, Placebo-Controlled, Safety, Immunogenicity, and Efficacy Study in Healthy Adults of Intramuscular Norovirus Bivalent Virus-like Particle Vaccine in Experimental Human Norovirus GII.4 Disease
The purpose of this study is to determine whether the norovirus vaccine is effective in preventing acute gastroenteritis due to the experimental human Norovirus GII.4 challenge dose. The purpose is also to evaluate the safety of the vaccine and the immunogenicity of the vaccine.
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)
132 participants
Study completion date
March 18, 2014
Actual (reported)
Listed locations
1 countries · 5 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.
Percentage of Participants With Viral AGE Clinical Illness and Fecal Virus Excretion Detected by RT-PCR OR 4-Fold Rise In Anti-GII.4 Norovirus P Particle Antibody Titer
Viral AGE due to Norovirus GII.4 strain during the inpatient stay that meets clinical illness definition 1,2 or 3 and positive for infection as measured by fecal virus excretion detected by Reverse Transcriptase Polymerase Chain Reaction (RT-PCR) OR a 4-fold rise in Immunoglobulin G Enzyme-Linked Immunosorbent Assay (IgG ELISA) anti-GII.4 norovirus P particle antibody titer from pre-challenge (Within 2 weeks of Challenge Day 0) to post-challenge (Challenge Day 30). The clinical illness definitions are 1: diarrhea (defined as ≥ 3 loose or liquid stools OR \>400-600 grams of loose or liquid stools produced in any 24-hour period), 2: vomiting (defined as ≥ 2 vomiting episodes in any 24-hour period) or 3. One Vomiting episode plus any loose or liquid stool in any 24-hour period OR one vomiting episode plus at least 2 of the following 5 events: nausea, fever ≥99.7°F orally, abdominal cramps or pains, abdominal gurgling or bloating, or myalgia in any 24-hour period.
Symptoms collected from Challenge dose (at least 28 days after dose 2) to discharge (at least 96 hours after challenge dose)
Percentage of Participants Experiencing Solicited Local Adverse Events Within 7 Days Post-Dose 1
Local Adverse Events included local injection site reactions/symptoms: pain, tenderness, redness, and swelling.
Within 7 days post-dose 1
Percentage of Participants Experiencing Solicited Local Adverse Events Within 7 Days Post-Dose 2
Local Adverse Events included local injection site reactions/symptoms: pain, tenderness, redness, and swelling.
Within 7 days post-dose 2
Percentage of Participants Experiencing Solicited Systemic Adverse Events Within 7 Days Post-Dose 1
Systemic signs or symptoms included: elevated daily oral temperature (fever), headache, fatigue, muscle aches, chills, joint aches and gastrointestinal symptoms of nausea, vomiting, diarrhea, abdominal cramps/pain.
Within 7 days post-dose 1
Percentage of Participants Experiencing Solicited Systemic Adverse Events Within 7 Days Post-Dose 2
Systemic signs or symptoms included: elevated fever, headache, fatigue, muscle aches, chills, joint aches and gastrointestinal symptoms of nausea, vomiting, diarrhea, abdominal cramps/pain.
Within 7 days post-dose 2
Percentage of Participants With Serious Adverse Events (SAEs) 365 Days Following the Last Study Vaccination
A SAE was any experience that suggests a significant hazard, contraindication, side effect or precaution that: results in death, is life-threatening, required in-patient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect or is medically significant.
365 Days Following Dose 2 (Up to 393 days)
Secondary Outcomes (25)
Percentage of Participants With 4-Fold Rise In Serum P-Particle Antibody Titer by ELISA or Detection of Norovirus GII.4 by RT-PCR in the Stool
Pre Challenge to 30 Days Post Challenge
Severity of Viral AGE Due to GII.4 Strain Assessed by Modified Vesikari Scoring System During the Inpatient Phase
Symptoms collected from Challenge dose (at least 28 days after dose 2) to discharge (at least 96 hours after challenge dose)
Severity of Viral AGE Due to GII.4 Strain Assessed by Post-Challenge Symptom Collection During the Inpatient Phase
Symptoms collected from Challenge dose (at least 28 days after dose 2) to discharge (at least 96 hours after challenge dose)
Duration of Viral AGE Due to GII.4 Strain During the Inpatient Phase
Symptoms collected from Challenge dose (at least 28 days after dose 2) to discharge (at least 96 hours after challenge dose)
Percentage of Participants With GII.4 Norovirus Positive RT-PCR in the Stool During the Inpatient and /or Outpatient Phase
Pre Challenge to 30 Days Post Challenge
Other Outcomes (2)
Correlation of GII.4 Serum HBGA Antibodies Prior to Challenge Associated With Protection From GII.4 Illness
Pre Challenge to Day 30 Post Challenge
Correlation of GII.4 Serum HGBA Antibodies Prior to Challenge Associated With Protection From GII.4 Infection
Pre Challenge to Day 30 Post Challenge
Study Arms (2)
Norovirus Bivalent VLP Vaccine
EXPERIMENTAL
Norovirus Bivalent virus like particle (VLP) Vaccine (50 μg of GI.1 Norwalk VLP and 50 μg of GII.4 cVLP) adjuvanted with MPL and AI(OH)3, intramuscular (IM), Days 0 and 28.
Biological: Norovirus Bivalent Vaccine
Placebo
PLACEBO COMPARATOR
Saline Placebo (0.9% sodium chloride (NaCl) and preservative-free), intramuscular (IM), Days 0 and 28.
Biological: Saline Comparator
Interventions
Norovirus Bivalent VaccineBiological
2 doses IM 28 days apart
Norovirus Bivalent VLP Vaccine
Saline ComparatorBiological
2 doses IM 28 days apart
Placebo
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Eligibility Criteria
Age18 Years - 49 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)
You may qualify if:
To be eligible to participate in this study, a subject must meet the following criteria:
132 participants (actual enrollment reported by the registry).
Study Design
Study Type
interventional
Phase
phase 1 2
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR
Study Record Dates
First Submitted
May 25, 2012
First Posted
May 31, 2012
Study Start
July 16, 2012
Actual (reported)
+20 more secondary outcomes
Age 18 to 50 years (e.g., not reached their 50th birthday).
Good general health as determined by a screening evaluation within 45 days of randomization.
Expressed interest, availability, and understanding to fulfill the study requirements including measures to prevent Norovirus contamination of the environment and spread of infection and illness to the community. The prospective subjects must pass (≥70 % correct answers) a written examination on all aspects of the study before enrollment.
Available to return for follow-up visits following discharge from the inpatient unit and able to deliver stool specimens to the investigative site promptly with no plan to move within the duration of the study.
Female subjects must be of non-childbearing potential, or if of childbearing potential (as determined by the investigator) must be practicing abstinence or using an effective licensed method of birth control (e.g. oral contraceptives; diaphragm or condom in combination with contraceptive jelly, cream, or foam; intrauterine contraceptive device, or Depo-Provera; skin patch; vaginal ring or cervical cap) for 30 days prior to vaccination and must agree to continue such precautions during the study and for 60 days after the Challenge visit. Male subjects must agree not to father a child from the day of vaccination until 60 days after the Challenge visit.
Have a serum antibody titer of ≤1:1600 to the GII.4 Norovirus challenge strain as measured by Immunoglobulin G (IgG) P Particle Enzyme-Linked Immunosorbent Assay (ELISA.)
Demonstrated to be H Type 1 secretor positive by Histoblood Group Antigen (HBGA) binding assay of their saliva test. \[This saliva test may be done at anytime prior to enrollment and does not need to be repeated.\]
Negative serology for hepatitis C antibody, Human Immune Deficiency Virus (HIV) antibody, hepatitis B surface antigen, and Rapid Plasma Reagin (RPR).
Agrees not to participate in another clinical trial with an investigational product for the duration of the study (12 months after the last dose of study vaccine or placebo i.e. 393 days).
You may not qualify if:
To be eligible to participate in this study, a subject must NOT meet any of the following criteria:
Living with or having daily contact with children age 5 years or less or a woman known to be pregnant. This includes significant contact at home, school, day-care, or equivalent facilities.
Nursing mother.
Living with or having daily contact with childcare workers.
Living with or having daily contact with elderly persons aged 70 years or more, or infirmed, diapered individuals, persons with disabilities or incontinent persons. This includes work or visits to nursing homes and day-care or equivalent facilities.
History of any gastroenteritis suggestive of Norovirus illness since screening serum antibody IgG P Particle ELISA testing was done.
History of any gastroenteritis within the past 2 weeks.
History of chronic functional dyspepsia, chronic gastroesophageal reflux disease, peptic ulcer disease, gastrointestinal hemorrhage, gall bladder disease, inflammatory bowel disease, irritable bowel syndrome, frequent diarrhea, chronic constipation, malabsorption, maldigestion, major Gastrointestinal (GI) surgery, or diverticulitis anytime during the subject's lifetime or any other chronic GI disorders that would interfere with interpretation of symptoms or evaluation during the study.
Routine use of medication other than oral contraceptive agents, anti-hypertensives, anti-depressants, vitamins and minerals. The use of any other medications should be discussed with the Sponsor and/or Central Safety Monitor (CSM).
History of any of the following medical illnesses:
Immunosuppression (disease or treatments that may affect immune system function)
Diabetes (including gestational diabetes during the pregnancy that required treatment other than dietary).
Cancer (malignancy other than a resolved or excised skin lesion).
Heart disease (hospitalization for a heart attack, arrhythmia, or syncope)
Unconsciousness (other than a single brief "concussion")
+53 more criteria
Contact the study team to confirm eligibility.
Sundararajan A, Sangster MY, Frey S, Atmar RL, Chen WH, Ferreira J, Bargatze R, Mendelman PM, Treanor JJ, Topham DJ. Robust mucosal-homing antibody-secreting B cell responses induced by intramuscular administration of adjuvanted bivalent human norovirus-like particle vaccine. Vaccine. 2015 Jan 15;33(4):568-76. doi: 10.1016/j.vaccine.2014.09.073. Epub 2014 Nov 22.
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Source: ClinicalTrials.gov.
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