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Hepatitis APhase 4NCT01252680

Immunogenicity and Interchangeability of Two Inactivated Hepatitis A Vaccines

A Phase 4 study testing Healive+Healive, Healive+Havrix and Havrix+Havrix in people with Hepatitis A, run by Sinovac Biotech Co., Ltd at 1 site in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a randomized, double-blind clinical trial of two inactivated hepatitis A vaccines in healthy children, immunogenicity and interchangeability of the two inactivated hepatitis A vaccines were evaluated. Read more about this study

Who is it for?
Ages 18 months to 5 yearsHealthy volunteers can take part
Conditions the study is for
Hepatitis A
What is being tested?
Healive+Healive, Healive+Havrix and Havrix+Havrix
Type of treatment
Vaccines
Could I receive a placebo?
No, everyone receives an active treatment
How many people
303 participants
Where
1 siteChina
Study dates
Apr 2010to May 2011
Phase
Phase 4
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 18 months to 5 years
  • All sexes
  • Healthy volunteers accepted
  • Child

Who may be able to join

  • Healthy children aged between 1.5 and 5 years, with no history of hepatitis A virus infection or hepatitis A vaccine vaccination
  • Provided birth certification or vaccination card
  • Parent(s) or legal guardian(s) are able to understand and sign the informed consent

Who cannot join

  • Axillary temperature > 37.0 centigrade at the time of dosing
  • Subject that has a medical history of any of the following: allergic history, or allergic to any ingredient of vaccine
  • Serious adverse reactions to vaccines such as anaphylaxis, hives, respiratory difficulty, angioedema, or abdominal pain
  • Autoimmune disease or immunodeficiency
  • Congenital malformation, developmental disorders or serious chronic diseases (such as Down's syndrome, diabetes, sickle cell anemia or neurological disorders)
  • Bleeding disorder diagnosed by a doctor (e.g. factor deficiency, coagulopathy, or platelet disorder requiring special precautions) or significant bruising or bleeding difficulties with IM injections or blood draws
Show all 12Show fewer
  • History or family history of convulsions, epilepsy, brain disease and psychiatric
  • History of any blood products within 3 months
  • Administration of any other investigational research agents within 30 days
  • Administration of any live attenuated vaccine within 30 days
  • Administration of subunit or inactivated vaccines within 14 days
  • Any medical, psychiatric, social condition, occupational reason or other responsibility that, in the judgment of the investigator, is a contraindication to protocol participation or impairs a volunteer's ability to give informed consent

Trial locations and contacts

1 site in 1 country.

China1 site
  • Tianjin Centers for Diseases Control and Prevention

    Tianjin, Tianjin Municipality, 300011

Other trials in China

About this study

Official title: A Randomized, Double-blind Clinical Trial of Two Inactivated Hepatitis A Vaccines in Healthy Children

This is a randomized, double-blind clinical trial of two inactivated hepatitis A vaccines in healthy children, immunogenicity and interchangeability of the two inactivated hepatitis A vaccines were evaluated.

Read the detailed description

This was a monocenter, comparative trial in which healthy children were randomized to receive two doses of hepatitis A vaccine 6 months apart. The trial was conducted in accordance with the Edinburgh version of the Declaration of Helsinki. The study was approved by the Ethics Committee. Parents or legal guardians of all participants gave written informed consent prior to study entry. Eligible subjects were between 18m and 6 years of age, When enrolled, children were randomized to four equal groups with different intervention. Immunogenicity and interchangeability of two inactivated hepatitis A vaccines were evaluated.

Conditions
Hepatitis A
Being tested
Healive+Healive, Healive+Havrix, Havrix+Havrix, Havrix+Healive
Medical subject headings
Hepatitis A

What participants receive

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

  • Healive+HealiveBiological

    Also called Hepatitis A vaccine

    Hepatitis A vaccine (Healive), 250 u per dose per 0.5 millilitre. Vaccines will be administered two doses in the deltoid muscle of the arm 6 months apart

  • Healive+HavrixBiological

    Also called Hepatitis A vaccine

    Two kinds of Hepatitis A vaccines, Healive(250 u per dose per 0.5 millilitre) and Havrix(720 ELU per dose per 0.5 millilitre). The first dose will be administered with Healive, followed by another dose of Havrix after 6 months

  • Havrix+HavrixBiological

    Also called Hepatitis A vaccine

    Hepatitis A vaccine (Havrix), 720 ELU per dose per 0.5 millilitre. Vaccines will be administered two doses in the deltoid muscle of the arm 6 months apart

  • Havrix+HealiveBiological

    Also called Hepatitis A vaccine

    Two kinds of Hepatitis A vaccines, Healive(250 u per dose per 0.5 millilitre) and Havrix(720 ELU per dose per 0.5 millilitre). The first dose will be administered with Havrix, followed by another dose of Healive after 6 months

Study groups in NCT01252680
Study groupRoleWhat they receive
Group 1: Healive+HealiveExperimental75 subjects to receive two doses of Healive 6 months apart
Receives: Biological: Healive+Healive
Group 2: Healive+HavrixExperimental75 subjects to receive one dose of Healive and another dose of Havrix 6 months apart
Receives: Biological: Healive+Havrix
Group 3: Havrix+HavrixExperimental75 subjects to receive two doses of Havrix 6 months apart
Receives: Biological: Havrix+Havrix
Group 4: Havrix+HealiveExperimental75 subjects to receive one dose of Havrix and another dose of Healive 6 months apart
Receives: Biological: Havrix+Healive

What is being measured

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

  1. Immunogenicity and interchangeability of two inactivated hepatitis A vaccines

    Measured: 7 months

Secondary outcomes (1)
  1. safety of two inactivated hepatitis A vaccines

    Measured: 7 months

Timeline

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

  1. First posted3 Dec 2010 (estimated)
  2. Study startApr 2010
  3. Primary completionFeb 2011
  4. Study completionMay 2011

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 4
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Crossover
Masking
Triple blind
Who is masked
Participant, Care provider, Investigator
Enrolment
303 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01252680
Sponsor's protocol ID
PRO-HA-4014
Status last verified
Mar 2013
First submitted
29 Nov 2010
Last updated
15 Mar 2013
Results posted
No
Data monitoring committee
No

Publications

  • Zhang ZL, Zhu XJ, Wang X, Liang M, Sun J, Liu Y, Gao ZG, Wu JY, Dong XJ, Liu RK, Chen JT, Zhang YQ, Wang W, Zhang LP, Yin W. Interchangeability and tolerability of two inactivated hepatitis A vaccines in Chinese children. Vaccine. 2012 Jun 8;30(27):4028-33. doi: 10.1016/j.vaccine.2012.04.038. Epub 2012 Apr 23.

    PubMed 22537990

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Healive+Healive, Healive+Havrix and Havrix+Havrix in people with Hepatitis A, run by Sinovac Biotech 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 12 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: finished, as of the sponsor's last update on 15 Mar 2013. 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. 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 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

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

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Immunogenicity and interchangeability of two inactivated hepatitis A vaccines (time frame: 7 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01252680, which also lists 1 linked publication.

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 15 Mar 2013.

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