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Dengue FeverPhase 2NCT00617344

Immunogenicity and Safety of Three Formulations of Dengue Vaccines in Healthy Adults Aged 18 to 45 Years in the US

A Phase 2 study testing Tetravalent CYD Dengue Vaccine , 5555 formulation, Tetravalent CYD Dengue Vaccine , 5553 formulation and Tetravalent CYD Dengue Vaccine, 4444 formulation in people with Dengue Fever and Dengue Hemorrhagic Fever, run by Sanofi at 5 sites in United States.

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 study used 3 different formulations of tetravalent CYD dengue vaccine. The primary objective of the study was to evaluate the neutralizing antibody response after 2 doses of two different formulations of tetravalent dengue vaccine administered at Month 0 and Month 6. Read more about this study

Who is it for?
Ages 18 to 45 yearsHealthy volunteers can take part
What is being tested?
Tetravalent CYD Dengue Vaccine , 5555 formulation, Tetravalent CYD Dengue Vaccine , 5553 formulation and Tetravalent CYD Dengue Vaccine, 4444 formulation
Could I receive a placebo?
No, everyone receives an active treatment
How many people
260 participants
Where
5 sitesUnited States
Study dates
17 Apr 2008to Feb 2010
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

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 to 45 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Healthy, as determined by medical history, clinical examination, and biological safety parameters.
  • Aged 18 to 45 years on the day of inclusion.
  • Provision of informed consent signed by the participant or another legally acceptable representative.
  • For a woman of child-bearing potential, use of an effective method of contraception or abstinence for at least 4 weeks prior to the first vaccination, and until at least 4 weeks after the last study vaccination.
  • Able to attend all scheduled visits and to comply with all trial procedures.

Who cannot join

  • Personal or family history of thymic pathology (thymoma), thymectomy, or myasthenia.
  • For a woman of child-bearing potential, known or suspected pregnancy or positive serum/urine pregnancy test.
  • Breast-feeding woman.
  • Participation in another clinical trial investigating a vaccine, drug, medical device, or a medical procedure in the 4 weeks preceding the first trial vaccination.
  • Planned participation in another clinical trial during the present trial period.
  • Known or suspected congenital or acquired immunodeficiency, immunosuppressive therapy such as anti-cancer chemotherapy or radiation therapy within the preceding 6 months, or long-term (at least 2 weeks within the previous 3 months) systemic corticosteroids therapy (at a dose of at least 10 mg). Topical steroids were allowed.
Show all 19Show fewer
  • Known systemic hypersensitivity to any of the vaccine components or history of a life-threatening reaction to the trial vaccine or to a vaccine containing any of the same substances.
  • Chronic illness at a stage that could interfere with trial conduct or completion, in the opinion of the investigator.
  • Current or past alcohol abuse or drug addiction that may interfere with the participant's ability to comply with trial procedures.
  • Receipt of blood or blood-derived products in the past 3 months, that might interfere with the assessment of immune response.
  • Receipt of any vaccine in the 4 weeks preceding the first trial vaccination.
  • Planned receipt of any vaccine in the 4 weeks following each of the trial vaccinations.
  • Human Immunodeficiency Virus (HIV), hepatitis B surface antigen, or hepatitis C virus seropositivity in blood sample taken at Screening.
  • Participant deprived of freedom by an administrative or court order, or in an emergency setting, or hospitalized without his/her consent.
  • Clinically significant laboratory test abnormalities (as determined by the investigator) in blood sample taken at Screening.
  • Previous residence in, travel or planned travel of more than 2 weeks during the study period to areas with high dengue infection endemicity.
  • Reported history of flavivirus infection as reported by the participant.
  • Previous vaccination against flavivirus diseases (including Japanese encephalitis, tick-borne encephalitis, and yellow fever).
  • Flavivirus vaccination planned during the trial period.

Trial locations and contacts

5 sites in 1 country.

5 sites in 1 country

United States5 sites
  • Investigational Site 004

    Hoover, Alabama, 35126

  • Investigational Site 001

    New Orleans, Louisiana, 70119

  • Investigational Site 002

    San Diego, California, 92103

  • Investigational Site 003

    Springfield, Missouri, 65802

  • Investigational Site 005

    Vallejo, California, 94589

Other trials in United States

About this study

Official title: Immunogenicity and Safety of Three Tetravalent Formulations of Dengue Vaccine Candidates in Healthy Adults Aged 18 to 45 Years in the US

This study used 3 different formulations of tetravalent CYD dengue vaccine.

The primary objective of the study was to evaluate the neutralizing antibody response after 2 doses of two different formulations of tetravalent dengue vaccine administered at Month 0 and Month 6.

The secondary objectives were:

  • To evaluate the safety of the 3 formulations of tetravalent CYD dengue vaccine.
  • To describe the neutralizing antibody responses to each of the 3 vaccine formulations.
  • To describe vaccine viremia after the first and second dose of each of the 3 vaccine formulations in a subset of participants.
Read the detailed description

All participants provided blood samples for immunogenicity assessments, while vaccine viremia was assessed in a subset of participants in each group.

Safety was assessed in all participants as follows: solicited adverse event (AE) prelisted in the diary card were collected for 7 days after vaccination for solicited injection site reactions and 14 days for solicited systemic reactions , unsolicited AEs were collected for 28 days after vaccination, and serious adverse event (SAE) information collected throughout the study up to 6 months after vaccination.

Being tested
Tetravalent CYD Dengue Vaccine , 5555 formulation, Tetravalent CYD Dengue Vaccine , 5553 formulation, Tetravalent CYD Dengue Vaccine, 4444 formulation
Keywords
Dengue fever, Dengue hemorrhagic fever, Dengue virus
Medical subject headings
Dengue, Severe Dengue

What participants receive

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

  • Tetravalent CYD Dengue Vaccine , 5555 formulationBiological

    A 0.5 mL dose, Subcutaneous at 0, 6, and 12 months, respectively.

  • Tetravalent CYD Dengue Vaccine , 5553 formulationBiological

    A 0.5 mL dose, Subcutaneous at 0, 6, and 12 months, respectively

  • Tetravalent CYD Dengue Vaccine, 4444 formulationBiological

    A 0.5 mL dose, Subcutaneous at 0, 6, and 12 months, respectively

Study groups in NCT00617344
Study groupRoleWhat they receive
CYD Dengue Vaccine 5555 FormulationExperimentalParticipants received 3 doses of CYD dengue vaccine (5555 formulation); one each at 0 (vaccination 1), 6 (vaccination 2), and 12 (vaccination 3) months.
Receives: Biological: Tetravalent CYD Dengue Vaccine , 5555 formulation
CYD Dengue Vaccine 5553 FormulationExperimentalParticipants received 3 doses of CYD dengue vaccine (5553 formulation); one each at 0 (vaccination 1), 6 (vaccination 2), and 12 (vaccination 3) months.
Receives: Biological: Tetravalent CYD Dengue Vaccine , 5553 formulation
CYD Dengue Vaccine 4444 FormulationExperimentalParticipants received 3 doses of CYD dengue vaccine (4444 formulation); one each at 0 (vaccination 1), 6 (vaccination 2), and 12 (vaccination 3) months.
Receives: Biological: Tetravalent CYD Dengue Vaccine, 4444 formulation

What is being measured

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

  1. Percentage of Participants With Antibody Titers of >= 10 1/Dilution (1/Dil) Against Each Dengue Virus Serotype Strain: CYD Vaccine 5555 and 5553 Formulation

    Percentage of participants with antibody titers >= 10 (1/dil) against each serotypes (1, 2, 3 and 4) of the dengue virus strains was assessed by dengue plaque reduction neutralization test (PRNT).

    Measured: Pre-injection 1 (Day 0), 30 days post-injection 2 (Month 7)

Secondary outcomes (6)
  1. Percentage of Participants With Antibody Titers of >=10 1/Dil Against Each Dengue Virus Serotype Strain

    Percentage of participants with antibody titers >= 10 1/dil against each serotypes (1, 2, 3 and 4) of the dengue virus strains was assessed by PRNT.

    Measured: Pre-injection 1 (Day 0), 30 days post-injection 1(Month 1), injection 2 (Month 7) and injection 3 (Month 13)

  2. Percentage of Participants With Antibody Titers >=10 1/Dil Against At Least Any 1, 2, 3 or All 4 Dengue Virus Serotypes

    Percentage of participants with antibody titers >= 10 1/dil against each serotypes (1, 2, 3 and 4) of the dengue virus strains was assessed by PRNT. In this outcome measure, participants with antibody titers >= 10 1/dil against any 1 of the 4 serotypes or any 2 of the 4 serotypes or any 3 of the 4 serotypes or with all 4 serotypes were reported.

    Measured: Pre-injection 1 (Day 0), 30 days post-injection 1(Month 1), injection 2 (Month 7) and injection 3 (Month 13)

  3. Geometric Means of Titers of Antibodies Against Each Dengue Virus Serotype Strain

    Geometric mean titers against each dengue virus serotype (1, 2, 3 and 4) strain was measured by PRNT.

    Measured: Pre-injection 1 (Day 0), 30 days post-injection 1(Month 1), injection 2 (Month 7) and injection 3 (Month 13)

  4. Number of Participants With Solicited Injection Site Reactions After Any Vaccination

    Solicited injection site reactions: Pain, Erythema, and Swelling. Pain: Grade 1: Easily tolerated, Grade 2: Sufficiently discomforting to interfere with normal behavior or activities, Grade 3: Incapacitating, unable to perform usual activities. Erythema:- Grade 1: <2.5 cm, Grade 2: >=2.5 to <5 cm, Grade 3: >=5 cm. Swelling:- Grade 1: <2.5 cm, Grade 2: >=2.5 to <5 cm, Grade 3: >=5 cm.

    Measured: 7 days after any injection 1, 2 or 3

  5. Number of Participants With Solicited Systemic Reactions After Any Vaccination

    Solicited systemic reactions: Fever, Headache, Malaise, Myalgia, and Asthenia. Fever: - Grade1: >=37.5°C to <=38.0°C (>=99.5°F to <=100.4°F), Grade 2: >38.0°C to <=39.0°C (>100.4°F to <= 102.2°F), Grade 3: >39.0°C (>102.2°F). Headache, malaise, myalgia and asthenia: Grade 1: noticeable but does not interfere with daily activities, Grade 2: interferes with daily activities, Grade 3: prevents daily activities.

    Measured: 14 days after any injection 1, 2 or 3

  6. Number of Participants With Vaccine Viremia

    Vaccine viremia (level of vaccine virus in blood samples taken from participants) was measured by an assay yellow fever reverse transcriptase polymerase chain reaction which allowed the detection of vaccine viremia of any serotype (1, 2, 3 and 4).

    Measured: 7 days post-injection 1 and 2, 14 days post-injection 1 and 2

Timeline

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

  1. First posted18 Feb 2008 (estimated)
  2. Study start17 Apr 2008
  3. Primary completionDec 2009
  4. Study completionFeb 2010

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 2
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
260 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00617344
Sponsor's protocol ID
CYD12
Status last verified
May 2019
First submitted
6 Feb 2008
Last updated
11 Jun 2019
Data monitoring committee
Yes

Publications

  • Dayan GH, Thakur M, Boaz M, Johnson C. Safety and immunogenicity of three tetravalent dengue vaccine formulations in healthy adults in the USA. Vaccine. 2013 Oct 17;31(44):5047-54. doi: 10.1016/j.vaccine.2013.08.088. Epub 2013 Sep 7.

    PubMed 24021313

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Tetravalent CYD Dengue Vaccine , 5555 formulation, Tetravalent CYD Dengue Vaccine , 5553 formulation and Tetravalent CYD Dengue Vaccine, 4444 formulation in people with Dengue Fever and Dengue Hemorrhagic Fever, run by Sanofi at 5 sites in United States.

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 5 inclusion and 19 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 11 Jun 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 5 sites in United States. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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

Are results available for this study?

Yes. Results are posted in the registry (first posted 11 Jun 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

Percentage of Participants With Antibody Titers of >= 10 1/Dilution (1/Dil) Against Each Dengue Virus Serotype Strain: CYD Vaccine 5555 and 5553 Formulation (time frame: Pre-injection 1 (Day 0), 30 days post-injection 2 (Month 7)). 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 NCT00617344, 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 11 Jun 2019.

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