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Completed

NCT Number: NCT03485144

A Clinical Study to Evaluate TV003 in Healthy Adults in Taiwan

The goal of this study is to determine the immunogenicity and safety of TV003(TetraVax-DV), a live attenuated tetravalent dengue vaccine candidate, in healthy human subjects in Taiwan

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Key information

Age range

20 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

National Taiwan University Hospital

Taipei, Taiwan

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Adult male or female between 20 and 70 years of age
  • Good general health as determined by physical examination, laboratory screening, and review of medical history
  • Available for the duration of the study
  • Willingness to sign the informed consent document
  • Female of childbearing potential willing to use effective contraception for the duration of the trial

Exclusion criteria

  • Females currently pregnant, as determined by positive β- human choriogonadotropin (HCG) test, and/or breast-feeding.
  • 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
  • Below lower limit of normal for absolute neutrophil count
  • Any significant alcohol or drug abuse in the past 12 months
  • History of a severe allergic reaction or anaphylaxis
  • Self-reported systemic hypersensitivity to any of the vaccine components
  • Severe asthma
  • Known HIV, Hepatitis B or hepatitis C
  • Any known immunodeficiency syndrome
  • Use of anticoagulant medications
  • Receive chronic administration of immunosuppressant drugs within 6 months prior to the administration of the study vaccine
  • Use of any investigational product within 30 days before study vaccination or at any time during the study
  • Asplenia
  • Receive administration of immunoglobulins and/or any blood products within 12 months preceding the administration of the study vaccine or at any time during the study
  • Fever or suspected fever within 72 hours prior to vaccination or tympanic temperature greater than 38°C on the day of vaccination
  • Receive administration of any licensed live attenuated vaccines within 30 days preceding the administration of the study vaccine and ending 30 days after
  • Receive administration of any licensed inactivated vaccines within 14 days preceding the administration of the study vaccine and ending 14 days after
  • Any other condition that in the opinion of the investigator would jeopardize the safety or rights of a subject participating in the trial or would render the subject unable to comply with the protocol

Treatment and study plan

TV003

Biological

Live attenuated virus vaccine-TetraVax-DV

Placebo for TV003

Biological

Placebo

Primary outcomes

  1. Immunogenicity of TetraVax-DV assessed by plaque reduction neutralization titer 50% (PRNT50)

    Time frame: Up to Day 90 after vaccination

    Determination of the serum PRNT50 to each virus type for each subject at study day 28, 56 and 90 post vaccination.

Secondary outcomes

  1. Immunogenicity of TetraVax-DV assessed by response rates

    Time frame: Up to Day 90 after vaccination

    Determine monovalent, bivalent, trivalent, and tetravalent seropositivity and seroconversion rates.

  2. Duration of immunogenicity of TetraVax-DV assessed by PRNT50

    Time frame: Up to Day 365 after vaccination

    Assess the duration of the antibody response by measured serum PRNT50 to each virus type for each subject at study day 180 and day 365 post vaccination.

  3. Frequency of viremia following vaccination

    Time frame: Up to Day 15 after vaccination

  4. Quantity of viremia following vaccination

    Time frame: Up to Day 15 after vaccination

  5. Duration of viremia following vaccination

    Time frame: Up to Day 15 after vaccination

  6. Determine the number of vaccinees with recoverable dengue virus.

    Time frame: Up to Day 15 after vaccination

  7. Determine the safety of TetraVax-DV assessed by frequency of solicited local adverse reactions.

    Time frame: Up to Day 7 after vaccination.

  8. Determine the safety of TetraVax-DV assessed by frequency of solicited systemic and unsolicited adverse reactions.

    Time frame: Up to Day 21 after vaccination.

  9. Determine the safety of TetraVax-DV assessed by occurrence of adverse events and serious adverse events.

    Time frame: Up to Day 365 after vaccination.

Sponsors and collaborators

Lead sponsor

Medigen Vaccine Biologics Corp.

Industry

Registry information

Official study title

A Phase II Randomized, Double-blinded, Placebo-controlled Clinical Study to Evaluate the Immunogenicity and Safety of TetraVax-DV in Healthy Adults in Taiwan

Important dates

Study start
2017
Primary completion
2019
Study completion
2019
First posted
Apr 2, 2018
Registry last updated
Aug 14, 2019

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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