- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT00920517
Safety and Immune Response to Two Doses of rDEN2/4delta30 Dengue Vaccine
Safety and Immunogenicity of a 2-Dose Regimen of rDEN2/4Δ30 Dengue Vaccine With Boosting at 4 Versus 6 Months
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
Dengue viruses, which cause dengue fever and dengue shock syndrome, are a major cause of morbidity and mortality in several of the world's tropical and subtropical regions. The rDEN2/4delta30(ME) vaccine is a live attenuated dengue virus vaccine that may be protective against dengue virus serotype 2 (DEN2). The purpose of this study is to evaluate the safety and immunogenicity of the rDEN2/4delta30(ME) vaccine in healthy adults.
This study will last approximately 5 to 7 months with 25 study visits. Participants will be randomly assigned into one of two cohorts. Participants in Cohort 1 will receive an injection of rDEN2/4delta30(ME) or placebo vaccine at Days 0 and 180. Participants in Cohort 2 will receive an injection of rDEN2/4delta30(ME) or placebo vaccine at Days 0 and 120. Participants will be asked to record their temperature in a diary for 16 days after each vaccination. At each study visit a physical examination, symptom history, and blood and urine collection will occur.
Type d'étude
Inscription (Réel)
Phase
- La phase 1
Contacts et emplacements
Lieux d'étude
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Maryland
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Baltimore, Maryland, États-Unis, 21205
- Center for Immunization Research
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- Good general health as determined by means of the screening procedures.
- Available for the duration of the study (32 weeks for cohort 1 and 23 weeks for cohort 2)
- Willing to use effective methods of contraception
Exclusion Criteria:
- 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 will affect the ability of the volunteer to understand and cooperate with the requirements of the study protocol
- Neutropenia as defined by an ANC ≤1500/mm3
- ALT level above the laboratory-defined upper limit of normal
- Serum creatinine level above the laboratory-defined upper limit of normal
- Any other condition that, in the opinion of the investigator, would jeopardize the safety or rights of a volunteer participating in the trial or would render the subject unable to comply with the protocol.
- Medical, occupational, or family problems as a result of alcohol or illicit drug use during the past 12 months
- History of a severe allergic reaction or anaphylaxis
- Severe asthma (emergency room visit or hospitalization within the last 6 months)
- Positive HIV-1 serology by screening and confirmatory assays
- Positive for hepatitis C virus (HCV) by screening and confirmatory assays
- Positive hepatitis B surface antigen (HBsAg) by enzyme-linked immunosorbent assay (ELISA)
- Known immunodeficiency syndrome
- Use of corticosteroids (excluding topical or nasal) or immunosuppressive drugs within 30 days of starting this study
- Receipt of a live vaccine within the 4 weeks or a killed vaccine within the 2 weeks prior to entry into the study
- Has had spleen surgically removed
- Receipt of blood products within the 6 months prior to study entry
- History or serologic evidence of previous dengue virus infection or other flavivirus infection (e.g. yellow fever virus, St. Louis encephalitis, West Nile virus).
- Previous receipt of yellow fever or dengue vaccine (licensed or experimental)
- Persons who have received any investigational agent in the 30 days prior to study entry
- Persons who have definite plans to travel to a dengue endemic area during the study
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: La prévention
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Double
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
---|---|
Comparateur actif: 1
Participants will receive 1 injection of rDEN2/4delta30(ME) or placebo vaccine on Days 0 and 180
|
10^3 PFU dose
placebo for rDEN2/4delta30(ME) vaccine
|
Comparateur actif: 2
Participants will receive 1 injection of rDEN2/4delta30(ME) or placebo vaccine on Days 0 and 120
|
10^3 PFU dose
placebo for rDEN2/4delta30(ME) vaccine
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Délai |
---|---|
Determine the frequency of vaccine related AEs for each dose, graded by severity.
Délai: Throughout study
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Throughout study
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Compare the immunogenicity of the two 2-dose regimens of the rDEN2/4Δ30(ME) candidate vaccine as assessed by neutralizing antibody titers to DEN2
Délai: At 4 and 6 weeks after each vaccination
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At 4 and 6 weeks after each vaccination
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Mesures de résultats secondaires
Mesure des résultats |
Délai |
---|---|
Assess the frequency, quantity, and duration of viremia after each dose of vaccine.
Délai: Throughout study
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Throughout study
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Determine the number of vaccinees infected with rDEN2/4Δ30(ME)
Délai: Throughout study
|
Throughout study
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Comparison of infectivity rates, safety, and immunogenicity between dose 1 and dose 2 withhin cohort and between cohorts
Délai: Throughout study
|
Throughout study
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Evaluation of the phenotype and activation of peripheral blood mononuclear cells at primary infection and upon reinfection with the DEN2/4Δ30(ME) vaccine.
Délai: Throughout study
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Throughout study
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Collaborateurs et enquêteurs
Les enquêteurs
- Chercheur principal: Anna Durbin, MD, Johns Hopkins Bloomberg School of Public Health
Publications et liens utiles
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- CIR 250
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Essais cliniques sur rDEN2/4delta30(ME) vaccine
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National Institute of Allergy and Infectious Diseases...Johns Hopkins Bloomberg School of Public HealthComplété
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National Institute of Allergy and Infectious Diseases...Johns Hopkins Bloomberg School of Public HealthComplété
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National Institute of Allergy and Infectious Diseases...Complété
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National Institute of Allergy and Infectious Diseases...Complété