Evaluating the Safety and Immune Response to Two Doses of a Dengue Virus Vaccine Administered 12 Months Apart

A Phase 1 Evaluation of the Safety and Immunogenicity of a Booster Dose of TV003 Administered 12 Months After Initial Vaccination With TV003

Dengue viruses can cause dengue fever and other more severe forms of disease. This study will evaluate the safety and immune response to two doses of a dengue virus vaccine given 12 months apart in healthy adults.

Study Overview

Status

Completed

Conditions

Detailed Description

Dengue viruses are a major health concern, particularly in the tropical and subtropical regions of the world. The World Health Organization (WHO) has made the development of a dengue vaccine a top priority. There are four types of dengue viruses (DEN1, DEN2, DEN3, and DEN4), each of which can cause various illnesses, including dengue fever, or the more severe disease, dengue hemorrhagic fever/shock syndrome (DHF/DSS). This study will evaluate the safety and immune response to two doses of a dengue virus vaccine (TV003) when administered 12 months apart in healthy adults. The study will also evaluate whether the candidate vaccine may protect against all four types of dengue viruses.

Participants will be randomly assigned to receive the TV003 study vaccine or placebo vaccine. At study entry, participants will undergo a blood collection and physical examination, and female participants will take a pregnancy test. Participants will then receive an injection of their assigned vaccine. They will take their temperature three times a day for 16 days after each vaccination and record the results on a diary card, which research staff will review during participants' study visits. Additional study visits will occur on Days 3, 10, 14, 21, 28, 56, 90, 180, 270, and 330. All study visits will include blood collection and a physical examination; select visits will include a pregnancy test for female participants. At a study visit on Day 360, all participants will receive an injection of the same vaccine they received at study entry. Additional study visits will occur on Days 363, 370, 374, 381, 388, 416, 450, and 540, and will include the same study procedures as previously performed.

Study Type

Interventional

Enrollment (Anticipated)

48

Phase

  • Phase 1

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

    • Maryland
      • Baltimore, Maryland, United States, 21205
        • Center for Immunization Research, Johns Hopkins Bloomberg School of Public Health
    • Vermont
      • Burlington, Vermont, United States, 05405
        • University of Vermont Vaccine Testing Center

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

Ages Eligible for Study

18 years to 50 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Good general health as determined by physical examination, laboratory screening, and review of medical history
  • Available for the duration of the study, approximately 26 weeks post-second vaccination
  • Willingness to participate in the study as evidenced by signing the informed consent document
  • Female participants of childbearing potential willing to use effective contraception for the duration of the trial. More information on this criterion can be found in the protocol.

Exclusion Criteria:

  • Currently pregnant, as determined by positive beta-human choriogonadotropin (HCG) test, or breastfeeding
  • Evidence of clinically significant neurologic, cardiac, pulmonary, hepatic, rheumatologic, autoimmune, or renal disease by history, physical examination, and/or laboratory studies
  • Behavioral, cognitive, or psychiatric disease that in the opinion of the investigator affects the ability of the participant to understand and cooperate with the requirements of the study protocol
  • Screening laboratory values of Grade 1 or above for absolute neutrophil count (ANC), alanine aminotransferase (ALT), and serum creatinine, as defined in this protocol
  • Any other condition that in the opinion of the investigator would jeopardize the safety or rights of a participant in the trial or would render the participant unable to comply with the protocol
  • Any significant alcohol or drug abuse in the past 12 months that has caused medical, occupational, or family problems, as indicated by participant history
  • History of a severe allergic reaction or anaphylaxis
  • Severe asthma (emergency room visit or hospitalization within the last 6 months)
  • HIV infection, by screening and confirmatory assays
  • Hepatitis C virus (HCV) infection, by screening and confirmatory assays
  • Hepatitis B virus (HBV) infection, by hepatitis B surface antigen (HBsAg) screening
  • Any known immunodeficiency syndrome
  • Use of anticoagulant medications
  • Use of corticosteroids (excluding topical or nasal) or immunosuppressive drugs within 42 days prior to or following vaccination. Immunosuppressive dose of corticosteroids is defined as greater than or equal to 10 mg prednisone equivalent per day for greater than or equal to 14 days.
  • Receipt of a live vaccine within 28 days or a killed vaccine within the 14 days prior to vaccination or anticipated receipt of any vaccine during the 28 days following vaccination
  • Asplenia
  • Receipt of blood products within the past 6 months, including transfusions or immunoglobulin or anticipated receipt of any blood products or immunoglobulin during the 28 days following vaccination
  • Anticipated receipt of any investigational agent in the 28 days before or after vaccination
  • Has definite plans to travel to a dengue endemic area during the study
  • Refusal to allow storage of specimens for future research

Inclusion Criteria for Second Dose of Vaccine:

  • Good general health as determined by physical examination and review of medical history
  • Available for the duration of the study, approximately 26 weeks after second dose
  • Ongoing willingness to continue to participate in the study
  • Female participants of childbearing potential willing to use effective contraception for the duration of the trial. More information on this criterion can be found in the protocol.

Exclusion Criteria for Second Dose of Vaccine:

  • Anaphylaxis or angioedema following the first dose of vaccine
  • Currently pregnant (as determined by positive beta-HCG test), breastfeeding, or, for those of childbearing potential, no longer using a reliable method of contraception
  • Evidence of clinically significant neurologic, cardiac, pulmonary, hepatic, rheumatologic, autoimmune, or renal disease by history, physical examination, and/or laboratory studies
  • Behavioral, cognitive, or psychiatric disease that in the opinion of the investigator affects the ability of the participant to understand and cooperate with the requirements of the study protocol
  • Day 330 laboratory values of Grade 1 or above for serum ALT and creatinine, as defined in this protocol
  • Any other condition that in the opinion of the investigator would jeopardize the safety or rights of a participant in the trial or would render the participant unable to comply with the protocol
  • Any significant alcohol or drug abuse in the past 12 months that has caused medical, occupational, or family problems, as indicated by participant history
  • History of a severe allergic reaction or anaphylaxis
  • Severe asthma (emergency room visit or hospitalization within the last 6 months)
  • HIV infection, by screening and confirmatory assays
  • HCV infection, by screening and confirmatory assays
  • HBV infection, by HBsAg screening
  • Any known immunodeficiency syndrome
  • Use of anticoagulant medications
  • Use of corticosteroids (excluding topical or nasal) or immunosuppressive drugs within 28 days prior to or following vaccination. Immunosuppressive dose of corticosteroids is defined as greater than or equal to 10 mg prednisone equivalent per day for greater than or equal to 14 days.
  • Receipt of a live vaccine within 28 days or a killed vaccine within the 14 days prior to vaccination or anticipated receipt of any vaccine during the 28 days following vaccination
  • Asplenia
  • Receipt of blood products within the past 6 months, including transfusions or immunoglobulin or anticipated receipt of any blood products or immunoglobulin during the 28 days following vaccination
  • Anticipated receipt of any other investigational agent in the 28 days before or after vaccination
  • Has definite plans to travel to a dengue endemic area during the study
  • Refusal to allow storage of specimens for future research

Other Treatments and Ongoing Exclusion Criteria:

The following criteria will be reviewed on Days 28, 56, and 90 following each vaccination. If any become applicable during the study, the participant will not be included in further immunogenicity evaluations, as of the exclusionary visit. The participant will, however, be encouraged to remain in the study for safety evaluations for the duration of the study.

Ongoing Exclusion Criteria:

  • Use of any investigational drug or investigational vaccine other than the study vaccine during the 28-day period post-vaccination
  • Chronic administration (greater than or equal to 14 days) of steroids (defined as prednisone equivalent of greater than or equal to 10 mg per day), immunosuppressants, or other immune-modifying drugs initiated during the 28-day period post-vaccination (topical and nasal steroids are allowed)
  • Receipt of a licensed vaccine during the 28-day period post-vaccination
  • Receipt of immunoglobulins and/or any blood products during the 28-day period post-vaccination
  • Pregnancy

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: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: TV003 Vaccine
Participants will receive an injection of the TV003 vaccine at study entry and Day 360.
TV003 will contain an admixture of the following monovalent dengue vaccines: 10^3 PFU of rDEN1Δ30, 10^3 PFU of rDEN2/4Δ30(ME), 10^3 PFU of rDEN3Δ30/31-7164, and 10^3 PFU of rDEN4Δ30. TV003 vaccine will be administered by subcutaneous injection in participants' deltoid region of the upper arm.
Placebo Comparator: Placebo Vaccine
Participants will receive an injection of the placebo vaccine at study entry and Day 360.
Placebo vaccine will be administered by subcutaneous injection in participants' deltoid region of the upper arm.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Frequency of vaccine-related adverse events (AEs), graded by severity
Time Frame: Measured through Day 540
Measured through Day 540
Measurement of neutralizing antibody titers to DEN1, DEN2, DEN3, and DEN4 at Day 0 and 28, 56, and 90 days after each vaccination
Time Frame: Measured at Day 0 and 28, 56, and 90 days after each vaccination
Monovalent, bivalent, trivalent, and tetravalent seropositivity and seroconversion rates will be determined at Day 0 and 28, 56, and 90 days after each vaccination.
Measured at Day 0 and 28, 56, and 90 days after each vaccination
Determination if a second dose of vaccine given at Day 360 will induce seropositivity in those vaccinees who remained seronegative to one or more DENV serotypes following the first vaccination
Time Frame: Measured through Day 540
Measured through Day 540

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Frequency, quantity, and duration of viremia following each vaccination
Time Frame: Measured through Day 540
Measured through Day 540
Number of vaccinees infected with DEN1, DEN2, DEN3, and DEN4
Time Frame: Measured through Day 540

Infection is defined as recovery of vaccine virus from the blood or serum of a participant and/or by seropositivity to DEN virus (PRNT50 greater than or equal to 1:10).

• Seropositivity will be defined as: PRNT50 to DEN1, DEN2, DEN3, DEN4 greater than or equal to 1:10 by Day 90 post-each vaccination

Measured through Day 540
Duration of the antibody response in recipients of the tetravalent vaccine
Time Frame: Measured through Day 540
The PRNT50 to DEN1, DEN2, DEN3, and DEN4 will be determined for all specimens collected at Day 180 post-each vaccination.
Measured through Day 540
Greater than or equal to 4-fold rise in serum neutralizing antibody titer by Day 450 compared with Day 360
Time Frame: Measured at Day 450
Measured at Day 450

Collaborators and Investigators

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

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.

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

January 1, 2013

Primary Completion (Actual)

March 1, 2015

Study Completion (Actual)

September 1, 2016

Study Registration Dates

First Submitted

January 30, 2013

First Submitted That Met QC Criteria

January 30, 2013

First Posted (Estimate)

February 1, 2013

Study Record Updates

Last Update Posted (Actual)

June 14, 2017

Last Update Submitted That Met QC Criteria

June 12, 2017

Last Verified

June 1, 2017

More Information

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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