A Study to Evaluate the Safety and Immunogenicity of EV71 Vaccine in Pediatric Subjects Aged 3 to 6 Years and 6 to 35 Months Old
Phase 2
Completed
- Conditions
- Enterovirus Infections
- Registration Number
- NCT02777411
- Lead Sponsor
- Enimmune Corporation
- Brief Summary
The objectives of this study are to evaluate the immune response and safety profiles of two injections of EV71 vaccine administrated with or without adjuvant AlPO4 at 0.5-μg, 1-μg, 2-μg and 5-μg dose (if required) in children aged 3 to 6 years old and 0.25-μg (if required), 0.5-μg, 1-μg and 2-μg (if required) in 6 to 35 months old infants/toddlers.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 122
Inclusion Criteria
- Healthy children aged from 3 to 6 years old (i.e. ≥ 3 years old and < 7 years old) for Part A; from 6 to 35 months old (i.e. ≥ 6 months old and < 36 months old) for Part B at the time of first vaccination.
- Subject's guardians were able and willing to comply with study procedures and give written informed consent.
- Subject was able and could comply with the requirements of the protocol.
- Subject with body temperature ≤38°C.
Exclusion Criteria
- Subject with previous known exposure to Enterovirus 71 (EV71).
- Subject with a history of herpangina, hand-foot-mouth disease, acute hemorrhagic conjunctivitis associated with enterovirus infection in the past 3 months.
- Subject with gestation < 37 weeks.
- Subject with birth weight <2.5 kg.
- Subject with a history of hypersensitivity to vaccines, or a history of allergic disease or reactions likely to be exacerbated by any component of the vaccine.
- Family history of seizures or progressive neurological disease.
- Family history of congenital or hereditary immunodeficiency.
- Severe malnutrition or dysgenopathy.
- Major congenital defects or serious chronic illness, including perinatal brain damage.
- Subject diagnosed of having autoimmune disease (e.g., celiac disease, type I diabetes, lupus (SLE), juvenile dermatomyositis, scleroderma, juvenile idiopathic arthritis (JIA), immune (or idiopathic) thrombocytopenia purpura).
- Bleeding disorder diagnosed by a doctor or significant bruising or bleeding difficulties with IM injections or blood draws.
- Any acute infections 7 days prior to administrate the first vaccination.
- Use of any investigational product (including drug, vaccine) within 30 days prior to vaccination or planned use during the study period.
- Administration of any attenuated live vaccine within 7 days prior to vaccination.
- Use of immunoglobulins or any blood products within 3 months prior to vaccination or planned use during the study period.
- Chronic administration (defined as > 14 days) of immunosuppressants or other immunomodulators or systemic corticosteroids within 6 months prior to vaccination.
- Under anti-tuberculosis prevention or therapy.
- Any condition that in the opinion of the investigator may interfere with the evaluation of study objectives.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Primary Outcome Measures
Name Time Method Unsolicited adverse events 28 days after each vaccination Solicited adverse events 7 days after each vaccination The occurrence of overall adverse events (AEs) and serious adverse event (SAEs) Day 0 to Day 196
- Secondary Outcome Measures
Name Time Method immunoglobulin G (IgG) titers induced by the EV71 vaccine ( determined by ELISA) Day 28, Day 56, Day 196 serum neutralizing antibody titers (NT) induced by the EV71 vaccine Day 28, Day 56, Day 196 change in the laboratory results based on hematology tests in each visit Day 28, Day 56, Day 196 change in blood pressures at each visit (for the 3 to 6 years old group only) Day 28, Day 56, Day 196 Seroconversion rate (SCR) based on neutralizing antibody titers Day 28, Day 56, Day 196 change in the laboratory results based on biochemistry tests in each visit Day 28, Day 56, Day 196 change in heart rates at each visit (for the 3 to 6 years old group only) Day 28, Day 56, Day 196
Trial Locations
- Locations (4)
China Medical University Hospital
🇨🇳Taichung, Taiwan
National Taiwan University Hospital
🇨🇳Taipei, Taiwan
Taipei Veterans General Hospital
🇨🇳Taipei, Taiwan
Linkou Chang Gung Memorial Hospital
🇨🇳Tao Yuan, Taiwan
China Medical University Hospital🇨🇳Taichung, Taiwan