Systems Biology of Vaccination for EV71 Vaccine in Chinese Healthy Children Aged From 2 to 5 Years Old
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 72
- 试验地点
- 1
- 主要终点
- Genomic signatures that predicted immune responses in infants vaccinated with EV71 vaccine
研究概览
简要总结
Recently, an inactivated vaccine (vero cell) against EV71 has been investigated in Phase 1 and Phase 2 clinical trials. Data from these trials showed that the EV71 vaccine has good safety profile and was immunogenic. 320 U alum-adjuvant vaccine has been chosen as the candidate vaccine for the phase 3 clinical trial.
This clinical trial is a supplementary phase 2 trial, which is designed to study the gene expression patterns induced by EV71 vaccine in Chinese healthy children aged from 2 to 5 years old use a systems biology approach combined with microarray analysis，RT-PCR and neutralizing antibody testing for PBMC and serum collected form the studied children population, to predict immunogenicity, and explore mechanistic insights about the EV71 vaccine.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Triple (Participant, Care Provider, Investigator)
入排标准
- 年龄范围
- 2 Years 至 5 Years（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Healthy subjects aged from 2 to 5 years old as established by medical history and clinical examination
- •The pre-vaccination neutralizing antibody against EV71 <1:8 which is determined by ELISA
- •The subjects' guardians are able to understand and sign the informed consent
- •Had never received the vaccine against EV71
- •Subjects who can and will comply with the requirements of the protocol
- •Subjects with temperature <37.1°C on axillary setting
排除标准
- •Subject who has a medical history of HFMD
- •<= 37 weeks gestation
- •Subjects with a birth weight <2.5 kg
- •Subject that has a medical history of any of the following: allergic history, or allergic to any ingredient of 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
- •Autoimmune disease
- •Bleeding disorder diagnosed by a doctor or significant bruising or bleeding difficulties with IM injections or blood draws
- •Any acute infections in last 7 days
- •Any prior administration of immunodepressant or corticosteroids in last 6month
- •Any prior administration of blood products in last 3 month
- •Any prior administration of other research medicines in last 1month
- •Any prior administration of attenuated live vaccine in last 28 days
- •Any prior administration of inactivated vaccines in last 14 days, such as pneumococcal vaccine
- •Under the anti - TB prevention or therapy
- •Any condition that in the opinion of the investigator, may interfere with the evaluation of study objectives
结局指标
主要结局
Genomic signatures that predicted immune responses in infants vaccinated with EV71 vaccine
时间窗: 6 months after first dose
Identifying genomic signatures that predicted immune responses in infants vaccinated with EV71 vaccine at month 6 in children aged 2-5 years
次要结局
- GMT, seroconversion rate of anti-EV71 antibodies in serum after first vaccination(28 days after the first vaccination)
- GMT, seroconversion rate of anti-EV71 antibodies in serum after second vaccination(28 days after second vaccination)
- the safety of EV71 vaccine in healthy children aged 2-5 years(28 days after the second dose)