Phase IV Clinical Trial, Immunogenicity and Safety of EV71 Vaccine

December 28, 2018 updated by: Sinovac Biotech Co., Ltd

A Phase IV Open-labelled, Single-centered, Stratified-randomized Clinical Trial in Zhejiang Province to Evaluate the Safety and Immunogenicity of EV71 Vaccine Developed by Sinovac Biotech Co., Ltd.

The purpose of this study is to evaluate the immunogenicity and safety of EV71 vaccine in infants aged 6 to 35 months old, by detecting the dynamic changes of neutralizing antibody at different time after vaccination

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This study is an open-labelled, single-centered, stratified-randomized, phase IV clinical trial. The purpose of this study is to evaluate the immunogenicity and safety of EV71 vaccine (developed by Sinovac Biotech Co., Ltd.) in infants aged 6 to 35 months old, by detecting the dynamic changes of neutralizing antibody at different times after vaccination. The enrolled subjects in this study receive two doses of EV71 vaccine with 1-month interval between doses. To evaluate safety of the vaccine, subjects will be observed for 30 days after the injection for the potential adverse events. To evaluate the immunogenicity of the vaccine, venous blood will be collected for the neutralizing antibody detection prior to vaccination, 10/20/30 days after the 1st dose and 30 days after the 2nd dose vaccination. All subjects will receive blood sampling for three times. Subjects will be randomly assigned to receive blood sampling at 10/20/30 days after 1st dose injection, with a ratio of 1: 1: 1.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
120

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
    • Zhejiang
      • Shaoxing, Zhejiang, China, 312300
        • Shangyu District Center for Disease Control and Prevention

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

6 months to 2 years (Child)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Healthy volunteers aged 6-35 months old
  • Guardian(s) of the volunteer should be capable of understanding the written consent form, and such form should be signed before the infant being included into this study
  • Proven legal identity

Exclusion Criteria:

For subjects with any of the following conditions, vaccination should not be administrated:

  • History of hand foot and mouth disease
  • Allergy to gentamicin; history of allergy to any vaccine or vaccine ingredient, or serious adverse reaction(s) to vaccination, such as urticaria, difficulty in breathing, angioneurotic edema, pain, etc
  • Severe chronic diseases
  • Thrombocytopenia or hemorrhagic disease
  • Immunodeficiency disease or receipt of immunosuppressant treatment
  • Uncontrolled epilepsy or progressive neurological disorders(e.g. Guillain-Barre syndrome)
  • Acute disease or acute stage of chronic disease prior to the study entry
  • History of thyroidectomy, thyroid disease within 12 months prior to the study entry
  • Asplenia or functional asplenia
  • Axillary temperature >37.0 ℃
  • Any other factor that suggesting the volunteer is unsuitable for this study based on the judgment of investigators

Exclusion Criteria of the Second Injection:

  • Subjects with any of the following conditions are forbidden to continue the 2nd dose of vaccination:

    1. Any serious adverse event that has a causal relationship with the investigated vaccine
    2. Severe allergic reactions or hypersensitivity after vaccination (including urticaria / rash appear within 30 minutes after vaccination
    3. Any confirmed or suspected autoimmune disease or immunodeficiency disease (e.g., HIV infection)
    4. Other reactions (including severe pain, severe swelling, severe activity limitation, persistent hyperthermia, severe headache or other systemic or local reactions)determined by the investigators
  • For subjects suffering from acute disease or acute stage of chronic disease , whether to continue vaccination depends on themselves

  • Subjects with the following conditions may receive vaccination in delayed time or withdraw from the study depending on the judgment of investigator

    1. Acute disease (moderate or severe disease with or without fever) in case of vaccination
    2. Axillary temperature > 37.0 °C

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: EV71 vaccine & blood sampling (0, 10,60)
This group receive two doses injection of EV71 vaccine (0, 28 days), and three times of blood sampling on day of 0, 10, and 60 respectively for EV71 neutralizing antibody detection.
Biological: EV71 vaccine
Two doses vaccination of EV71vaccine (Intramuscular injection, 0.5ml) with a schedule of 0, 28 days.
Experimental: EV71 vaccine & blood sampling (0, 20,60)
This group receive two doses injection of EV71 vaccine (0, 28 days), and three times of blood sampling on day of 0, 20, and 60 respectively for EV71 neutralizing antibody detection.
Biological: EV71 vaccine
Two doses vaccination of EV71vaccine (Intramuscular injection, 0.5ml) with a schedule of 0, 28 days.
Experimental: EV71 vaccine& blood sampling (0, 30, 60)
This group receive two doses injection of EV71 vaccine (0, 28 days), and three times of blood sampling on day of 0, 30, and 60 respectively for EV71 neutralizing antibody detection.
Biological: EV71 vaccine
Two doses vaccination of EV71vaccine (Intramuscular injection, 0.5ml) with a schedule of 0, 28 days.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
The seroconversion rate of EV71 neutralizing antibody 30 days after the two doses vaccination
Time Frame: 30 days
Immunogenicity indicator
30 days

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
The seroconversion rate of EV71 neutralizing antibody 10, 20 and 30 days after the first dose vaccination
Time Frame: 10,20,and 30 days
Immunogenicity indicator
10,20,and 30 days
The seropositive rate of EV71 neutralizing antibody 10, 20, 30, and 60 days after the first dose vaccination
Time Frame: 10, 20,30,and 60 days
Immunogenicity indicator
10, 20,30,and 60 days
GMT and GMT increase fold of EV71 neutralizing antibody 10,20,30,and 60 days after the first dose vaccination
Time Frame: 10,20，30，and 60 days
Immunogenicity indicator
10,20，30，and 60 days
Incidence of unsolicited local or systemic adverse events within 3 days after each dose
Time Frame: 3 days
Safety indicator
3 days
Incidence of unsolicited adverse events within 30 days after each dose
Time Frame: 30 days
Safety indicator
30 days
Incidence of the serious adverse events within 60 days after the first dose vaccination
Time Frame: 60 days
Safety indicator
60 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Sinovac Biotech Co., Ltd

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Zhejiang Provincial Center for Disease Control and Prevention
Shangyu District Center for Disease Control and Prevention

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 16, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 15, 2017

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 15, 2017

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 7, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 7, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 11, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 2, 2019

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 28, 2018

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • PRO-EV71-4011

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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