AzTrials
AzTrials

VaricellaPhase 3NCT05015686

Safety and Immunogenicity of Live Attenuated Varicella Vaccine in Healthy Population Aged ≥13 Years Old

A Phase 3 study testing Live attenuated varicella vaccines manufactured by Sinovac (Dalian) Vaccine Technology Co., Ltd and Live attenuated varicella vaccines manufactured by Changchun BCHT Biotechnology Co.,Ltd in people with Varicella, run by Sinovac (Dalian) Vaccine Technology Co., Ltd. at 1 site in China.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

This a randomized, blind, controlled clinical trial of live attenuated varicella vaccines manufactured by Sinovac (Dalian) Vaccine Technology Co., Ltd .The purpose of this study is to evaluate the immunogenicity of a two doses vaccination of investigational vaccine with 0,28 day, 0,42 day and 0,56 day immunization… Read more about this study

Who is it for?
Ages 13 years and olderHealthy volunteers can take part
Conditions the study is for
Varicella
What is being tested?
Live attenuated varicella vaccines manufactured by Sinovac (Dalian) Vaccine Technology Co., Ltd and Live attenuated varicella vaccines manufactured by Changchun BCHT Biotechnology Co.,Ltd
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
2,400 participants
Where
1 siteChina
Study dates
30 Sep 2021to 20 Sep 2026
Phase
Phase 3
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 13 years and older
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult, Older adult

Who may be able to join

  • Healthy population aged 13 years and above;
  • Proven legal identity;
  • The subjects and/or guardians can understand and voluntarily sign the informed consent form (For subjects aged 13-17 years, both subjects and guardians need to sign the informed consent form);

Who cannot join

  • History of chickenpox or shingles;
  • Axillary temperature >37.0°C;
  • Already pregnant (including a positive urine pregnancy test) or are breastfeeding, planning to get pregnant within 6 months;
  • History of asthma, history of allergy to the vaccine or vaccine components, or serious adverse reactions to the vaccine, such as urticaria, dyspnea, and angioedema;
  • Congenital malformations or developmental disorders, genetic defects, severe malnutrition, etc;
  • Autoimmune disease or immunodeficiency / immunosuppression;
Show all 18Show fewer
  • Severe chronic diseases, severe cardiovascular diseases,hypertension(adult field measurement: SBP ≥140mmHg or diastolic blood pressure ≥90mmHg)and diabetes that cannot be controlled by drugs, liver or kidney diseases;
  • Family history of psychosis,severe neurological disease (epilepsy, convulsions or convulsions) or mental illness;
  • Thyroid disease or history of thyroidectomy, asplenia, functional asplenia,asplenia or splenectomy resulting from any condition;
  • Diagnosed abnormal blood coagulation function (eg, lack of blood coagulation factors, blood coagulopathy, abnormal platelets) or obvious bruising or blood coagulation;
  • Immunosuppressive therapy, cytotoxic therapy, inhaled corticosteroids (excluding allergic rhinitis corticosteroid spray therapy, acute noncomplicated dermatitis superficial corticosteroid therapy) in the past 6 months;
  • History of alcohol or drug abuse;
  • Receipt of blood products within in the past 3 months;
  • Participating in other drug/vaccine clinical trial;
  • Receipt of attenuated live vaccines in the past 28 days;
  • Receipt of inactivated or subunit vaccines in the past 7 days;
  • Onset of various acute or chronic diseases within 7 days prior to the study;
  • According to the investigator's judgment, the subject has any other factors that are not suitable for participating in the clinical trial.

Trial locations and contacts

1 site in 1 country.

China1 site
  • Yucheng Center for Disease Control and Prevention

    Shangqiu, Henan, 476300

Other trials in China

About this study

Official title: A Randomized, Blind, Controlled Clinical Trial to Evaluate Safety and Immunogenicity of Live Attenuated Varicella Vaccine After a Two-dose Vaccination Course in Healthy Population Aged ≥13 Years Old

This a randomized, blind, controlled clinical trial of live attenuated varicella vaccines manufactured by Sinovac (Dalian) Vaccine Technology Co., Ltd .The purpose of this study is to evaluate the immunogenicity of a two doses vaccination of investigational vaccine with 0,28 day, 0,42 day and 0,56 day immunization schedule in population aged ≥13 years old.

Read the detailed description

This study is a randomized, blind, controlled phase # clinical trial in population aged ≥13 years old. The experimental vaccine will be manufactured by Sinovac (Dalian) Vaccine Technology Co., Ltd.A total of 2400 subjects aged 13 years and older will be enrolled with1200 subjects in 13 ~ 17 years old group and1200 subjects in 18 years and older group.960 subjects in each age group will be randomly divided into experimental group and control group according to 1:1 ratio,and subjects will receive two doses of vaccine with the immunization course of 0,28 days, 0,42 days or 0,56 days. An additional 240 subjects in each age group will be randomly divided into experimental group and control group according to 2:1 ratio to receive two doses of the experimental vaccine or placebo with the immunization course of 0, 70 days.In addition,400 subjects including 320 people of experimental group in different immunization course according to the difference of age and 80 people of placebo group according to the difference of age will be selected to collect blood about 3ml each time to evaluate immunity persistence of live attenuated varicella vaccines at 3 and 5 years after the whole immunization.

Conditions
Varicella
Being tested
Live attenuated varicella vaccines manufactured by Sinovac (Dalian) Vaccine Technology Co., Ltd, Live attenuated varicella vaccines manufactured by Changchun BCHT Biotechnology Co.,Ltd, Placebo
Medical subject headings
Chickenpox

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Live attenuated varicella vaccines manufactured by Sinovac (Dalian) Vaccine Technology Co., LtdBiological

    live varicella-zoster virus in 0·5 mL of sucrose, sodium glutamate,sodium chloride,potassium chloride,sodium dihydrogen phosphate, potassium dihydrogen phosphate and injection water per injection

  • Live attenuated varicella vaccines manufactured by Changchun BCHT Biotechnology Co.,LtdBiological

    live varicella-zoster virus in trehalose,human serum albumin,sodium glutamate,sucrose,glucose,carbamide,arginine and injection water per injection

  • Live attenuated varicella vaccines manufactured by Sinovac (Dalian) Vaccine Technology Co., LtdBiological

    live varicella-zoster virus in 0·5 mL of sucrose, sodium glutamate,sodium chloride,potassium chloride,sodium dihydrogen phosphate, potassium dihydrogen phosphate and injection water per injection

  • PlaceboBiological

    Sodium chloride and distilled water

Study groups in NCT05015686
Study groupRoleWhat they receive
Experimental Group with the immunization course of 0,28 days, 0,42 days or 0,56 daysExperimental960 subjects (including 480 children aged 13-17 years and 480 adults aged 18 years and older) will receive two doses of experimental vaccine with the immunization course of 0,28 days, 0,42 days or 0,56 days.
Receives: Biological: Live attenuated varicella vaccines manufactured by Sinovac (Dalian) Vaccine Technology Co., Ltd
Control GroupActive comparator960 subjects (including 480 children aged 13-17 years and 480 adults aged 18 years and older) will receive two doses of control vaccine with the immunization course of 0,28 days, 0,42 days or 0,56 days.
Receives: Biological: Live attenuated varicella vaccines manufactured by Changchun BCHT Biotechnology Co.,Ltd
Experimental Group with the immunization course of 0, 70 daysExperimental320 subjects (including 160 children aged 13-17 years and 160 adults aged 18 years and older) will receive two doses of the experimental vaccine with the immunization course of 0, 70 days.
Receives: Biological: Live attenuated varicella vaccines manufactured by Sinovac (Dalian) Vaccine Technology Co., Ltd
Placebo groupPlacebo comparator160 subjects (including 80children aged 13-17 years and 80 adults aged 18 years and older) will receive two doses of the placebo with the immunization course of 0, 70 days.
Receives: Biological: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Seroconversion rate of the antibody

    The seroconversion rate of the antibody 28 days among all subjects after the second vaccination.

    Measured: Day 28 after the whole schedule

  2. GMT of the antibody

    The GMT of the antibody 28 days among all subjects after the second vaccination.

    Measured: Day 28 after the whole schedule

Secondary outcomes (6)
  1. GMI of the antibody

    GMI of the antibody 28 days among all subjects after the second vaccination.

    Measured: Day 28 after the whole schedule

  2. Seroconversion rate, positive rate, GMT and GMI of the antibody

    Seroconversion rate, positive rate, GMT and GMI of the antibody among all subjects on day 28,day 42 and day 56 after the first vaccination.

    Measured: Day 28,Day 42 and day 56 after the first vaccination

  3. Incidence of adverse reactions within 0~28 days after each dose

    Incidence of adverse reactions within 0~28 days after each dose vaccination with immunization course of 0,28 days ,0,42 days and 0,56 days.

    Measured: Within 0~28 days after each dose

  4. Incidence of adverse reactions within 0~14 days after each dose vaccination

    Incidence of adverse reactions within 0~14 days after each dose vaccination with immunization course of 0,28 days ,0,42 days and 0,56 days

    Measured: Within 0~14 days after each dose

  5. Incidence of grade 3 and above adverse reactions

    Incidence of grade 3 and above adverse reactions within 0~28 days after each dose vaccination with immunization course of 0,28 days ,0,42 days and 0,56 days.

    Measured: within 0~28 days after each dose

  6. Incidence of serious adverse events

    Incidence of serious adverse events from vaccination to 6 months after the second vaccination with immunization course of 0,28 days ,0,42 days and 0,56 days

    Measured: From vaccination to 6 months after the second vaccination

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted20 Aug 2021
  2. Study start30 Sep 2021
  3. Primary completion9 Feb 2022
  4. Study completion20 Sep 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
2,400 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05015686
Sponsor's protocol ID
PRO-VZV-4002
Status last verified
Mar 2024
First submitted
26 Jul 2021
Last updated
8 Mar 2024
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Live attenuated varicella vaccines manufactured by Sinovac (Dalian) Vaccine Technology Co., Ltd and Live attenuated varicella vaccines manufactured by Changchun BCHT Biotechnology Co.,Ltd in people with Varicella, run by Sinovac (Dalian) Vaccine Technology Co., Ltd. at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 18 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 8 Mar 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Seroconversion rate of the antibody (time frame: Day 28 after the whole schedule). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Mar 2024.

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