A Trial of a Walter Reed Army Institute of Research (WRAIR) Live Attenuated Virus Tetravalent Dengue Vaccine in Healthy US Adults
- Conditions
- Dengue
- Interventions
- Biological: Live attenuated tetravalent dengue vaccineBiological: Placebo
- Registration Number
- NCT00239577
- Lead Sponsor
- GlaxoSmithKline
- Brief Summary
This descriptive study will evaluate the safety and immunogenicity of 5 different formulations of the WRAIR dengue vaccine compared to a placebo.
- Detailed Description
Subjects will be randomized into one of 6 groups. One group will receive a placebo vaccine and the others will receive one of 5 different dengue vaccine formations. Each subject will receive two doses six months apart. Study subjects who elect to participate in a mosquito transmissibility component of the study will undergo mosquito feedings during each of the two assigned follow-up visits after vaccine dose 1. All subjects will have 11 venipunctures during 11 visits (i.e., screening plus 10 study visits) over a period of nine months.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 86
Not provided
Not provided
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description DENGUE FORMULATION 17A GROUP Live attenuated tetravalent dengue vaccine Healthy male or female subjects, between and including 18-45 years of age, who received two doses of Dengue vaccine Formulation 17a, administered subcutaneously into the upper-outer triceps/deltoid area of the non-dominant arm, at Months 0 and 6. PLACEBO GROUP Placebo Healthy male or female subjects, between and including 18-45 years of age, who received two doses of Placebo, administered subcutaneously into the upper-outer triceps/deltoid area of the non-dominant arm, at Months 0 and 6. DENGUE FORMULATION 17B GROUP Live attenuated tetravalent dengue vaccine Healthy male or female subjects, between and including 18-45 years of age, who received two primary doses of Dengue vaccine Formulation 17b, administered subcutaneously into the upper-outer triceps/deltoid area of the non-dominant arm, at Months 0 and 6, and one booster dose approximately 5-12 months after the second dose. DENGUE FORMULATION 19 GROUP Live attenuated tetravalent dengue vaccine Healthy male or female subjects, between and including 18-45 years of age, who received two primary doses of Dengue vaccine Formulation 19, administered subcutaneously into the upper-outer triceps/deltoid area of the non-dominant arm, at Months 0 and 6 and one booster dose approximately 5-12 months after the second dose.
- Primary Outcome Measures
Name Time Method Number of Subjects With Any and Grade 3 Solicited Local Symptoms During the 21-day (Days 0-20) follow-up after Dose 1 of the study vaccine Assessed solicited local symptoms were pain, redness and swelling. Any = occurrence of the symptom regardless of intensity grade. Grade 3 pain = pain that prevented normal activity. Grade 3 redness/swelling = redness/swelling spreading beyond 20 millimeters (mm) of injection site.
Number of Subjects With Any, Grade 3 and Related Solicited General Symptoms During the 21-day (Days 0-20) follow-up after Dose 1 of the study vaccine Assessed solicited general symptoms were abdominal pain, arthralgia, fatigue, fever \[defined as axillary temperature equal to or above (≥) 37.5 degrees Celsius (°C)\], headache, muscle aches, nausea, pain behind the eyes, photophobia, pruritus, rash and vomiting. Any = occurrence of the symptom regardless of intensity grade or relation to vaccination. Grade 3 symptom = symptom that prevented normal activity. Grade 3 fever = fever \> 39.0 °C. Related = symptom assessed by the investigator as causally related to the study vaccination.
Titers for DEN Neutralizing Antibodies Types 1, 2, 3 and 4 At 30 days (Month 7) after Dose 2 of the study vaccine Titers for DEN-1, DEN-2, DEN-3 and DEN-4 neutralizing antibodies, expressed as Geometric Mean Titers (GMTs), with cut-off values greater than or equal to (≥) 10 estimated dose giving 50% (ED50) signal reduction when compared to a control without serum.
Titers for DEN Neutralizing Antibodies Types 1, 2, 3 and 4 Based on Priming Status At Month 1 post-booster dose of the study vaccine Titers for DEN 1, DEN 2, DEN 3 and DEN 4 neutralizing antibodies, expressed as Geometric Mean Titers (GMTs), with cut-off values greater than or equal to (≥) 10 estimated dose giving 50% (ED50) signal reduction when compared to a control without serum. Not primed = Not primed by MN50; Primed = Primed by MN50. Primed subject is a subject with neutralizing antibody titer ≥ 10 ED50 at pre-vaccination for at least one DEN type. Not primed subject is a subject with neutralizing antibody titer \<10 ED50 for any DEN type at pre-vaccination.
- Secondary Outcome Measures
Name Time Method Number of Subjects With Serious Adverse Events (SAEs) During the whole primary phase of the study (from Day 0 up to Month 9) SAEs assessed include medical occurrences that result in death, are life-threatening, require hospitalization or prolongation of hospitalization or result in disability/incapacity.
Number of Subjects With Any and Grade 3 Solicited Local Symptoms During the 21-day (Days 0-20) follow-up after the study vaccine booster dose Assessed solicited local symptoms were pain, redness and swelling. Any = occurrence of the symptom regardless of intensity grade. Grade 3 pain = pain that prevented normal activity. Grade 3 redness/swelling = redness/swelling spreading beyond 20 millimeters (mm) of injection site.
Number of Subjects With Any, Grade 3 and Related Solicited General Symptoms During the 21-day (Days 0-20) follow-up after the study vaccine booster dose Assessed solicited general symptoms were abdominal pain, arthralgia, fatigue, fever \[defined as oral temperature equal to or above (≥) 37.5 degrees Celsius (°C)\], headache, muscle aches, nausea, pain behind the eyes, photophobia, pruritus, rash and vomiting. Any = occurrence of the symptom regardless of intensity grade or relation to vaccination. Grade 3 symptom = symptom that prevented normal activity. Grade 3 fever = oral fever \> 39.0 °C. Related = symptom assessed by the investigator as causally related to the study vaccination.
Number of Subjects With Unsolicited Adverse Events (AEs) During the 31-day (Days 0-30) follow-up after any study vaccine dose An unsolicited AE covers any untoward medical occurrence in a clinical investigation subject temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product and reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms. Any was defined as the occurrence of any unsolicited AE regardless of intensity grade or relation to vaccination.
Number of Subjects With Alert Values for Safety Laboratory Determinations During the 31-day (Days 0-30) follow-up after the study vaccine booster dose Among assessed haematological and biochemical parameters were: Alanine aminotransferase (ALT), Aspartate aminotransferase (AST), hematocrit (HC), absolute neutrophil count (NEU) and platelet count (Platelet).
Number of Subjects With Abnormal Findings at Dengue Physical Examination At Month 1 post-booster vaccination The abnormal findings at Dengue physical examination included: Conjunctival hemorrhage, Conjunctival injection, Generalized lymphadenopathy, Generalized rash, Hepatomegaly, Lymphadenopathy, Mucosal hemorrhage, Rash, Skin hemorrhage and Splenomegaly. Rash involved \< 50% of the body surface; Generalized rash involved at least 50% of the body surface. Generalized lymphadenopathy was defined as palpable lymph nodes in four or more of the following locations: cervical, axillary, inguinal or other, with right and left sides considered as separate locations. Note: Results only available during the 31-day follow-up period (Month 1) after the booster dose, instead of at each booster phase visit \[pre-vaccination, study Visit 12 post-booster vaccination (Days 2, 5, 8 or 12), Visit 13 post-booster vaccination (Days 5, 8, 12 or 14) and at Months 1 and 6 post-booster vaccination\].
Number of Subjects With Suspected and Confirmed Dengue During the 31-day (Days 0-30) follow-up after the study vaccine booster dose The number of subjects with suspected and confirmed Dengue post-booster vaccination.
Number of Subjects With Measurable Dengue Viremia At study Visit 12 (Days 2, 5, 8 or 12) (FU1), study Visit 13 post-booster vaccination (Days 5, 8, 12 or 14) (FU2) and at study Visit 14 (Month 1 post-booster vaccination) The number of subjects with measurable dengue viremia at specified timepoints.
Number of Subjects With Safety Laboratory Determinations Outside the Normal Ranges During the 31-day (Days 0-30) follow-up after each vaccine dose (Month 1 and Month 7) Among assessed haematological and biochemical parameters were: Alanine aminotransferase (ALT), Aspartate aminotransferase (AST), hematocrit (HC), absolute neutrophil count (NEU) and platelet count (Platelet). Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.
Titers for DEN Neutralizing Antibodies Types 1, 2, 3 and 4 At Month 0 and Month 1 Titers for DEN-1, DEN-2, DEN-3 and DEN-4 neutralizing antibodies, expressed as Geometric Mean Titers (GMTs), with cut-off values greater than or equal to (≥) 10 estimated dose giving 50% (ED50) signal reduction when compared to a control without serum.
Number of Subjects With Antibody Titers Above the Assay Cut-off Value for Each DEN Serotype Before (PRE) and one month after the booster vaccination (Month 1) Assay cut-off values were greater than or equal to (≥) 10 estimated dose giving 50% (ED50) signal reduction when compared to a control without serum. Not primed = Not primed by MN50; Primed = Primed by MN50. Primed subject is a subject with neutralizing antibody titer ≥ 10 ED50 at pre-vaccination for at least one DEN type. Not primed subject is a subject with neutralizing antibody titer \<10 ED50 for any DEN type at pre-vaccination.
Number of Subjects With Sero-response to Each DEN Type At Months 1 and 7 Sero-response defined as: For initially seronegative subjects (antibody titer \< 10 ED50 for neutralizing antibodies to DEN 1, DEN 2, DEN 3, DEN 4 prior to vaccination), antibody titer ≥ 10 ED50 at post-vaccination; For initially seropositive subjects (antibody titer ≥ 10 ED50 for neutralizing antibodies to DEN 1, DEN 2, DEN 3, DEN 4 prior to vaccination), antibody titer at post-vaccination ≥ 4 fold the pre-vaccination antibody titer.
Number of Subjects With Antibody Titers Above the Assay Cut-off Value (Tetravalent Response) for All Dengue Serotypes At Months 1 and 7 The antibody titers and pre-vaccination status were determined by MN50 with a cut-off value equal to 1:10.
Number of Subjects With Any, Grade 3 and Related Unsolicited AEs During the 31-day (Days 0-30) follow-up after the study vaccine booster dose An unsolicited AE covers any untoward medical occurrence in a clinical investigation subject temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product and reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms. Any was defined as the occurrence of any unsolicited AE regardless of intensity grade or relation to vaccination.
Number of Subjects With SAEs During the whole booster phase of the study (from pre-vaccination up to Month 6 post-vaccination with the booster dose) SAEs assessed include medical occurrences that result in death, are life-threatening, require hospitalization or prolongation of hospitalization or result in disability/incapacity.
Number of Subjects With Hematological and Biochemical Determinations Within and Outside the Normal Ranges At each booster phase visit [pre-booster vaccination (PRE), study Visit 12 post-booster vaccination (Days 2, 5, 8 or 12) (FU1), study Visit 13 post-booster vaccination (Days 5, 8, 12 or 14) (FU2) and at Months 1 and 6 post-booster vaccination] Among assessed haematological and biochemical parameters were: Alanine aminotransferase (ALT), Aspartate aminotransferase (AST), hematocrit (HC), absolute neutrophil count (NEU) and platelet count (Platelet). Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter. Note: No blood sample was taken for these laboratory tests at Month 6 post-booster vaccination.
Trial Locations
- Locations (1)
GSK Investigational Site
🇺🇸Silver Spring, Maryland, United States