Long-Term Safety and Antibody Persistence of TDV and the Impact of a Booster Dose
3상
완료
NCT03999996
| 대상 질환 | Dengue Fever |
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| 임상 단계 | 3상 |
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| 스폰서 | Takeda |
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| 상태 | 완료 |
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| 참여자 수 | 365 명 |
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| 중재(약물) | Takeda's Dengue Tetravalent Vaccine (Live, Attenuated) (TDV) |
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| 시작일 | 2019년 11월 12일 |
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| 완료일 | 2024년 5월 25일 |
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| 결과 공개일 | 2025년 6월 12일 |
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요약
The purpose of this study is to describe antibody persistence for each of the 4 dengue serotypes for up to 63 months after the first vaccination in the primary vaccination series for participants from parent trial DEN-315 (NCT03341637) (Mexico) and for up to 36 months after the first vaccination in the primary vaccination series for participants from parent trial DEN-304 (NCT03423173) (United States \[US\]) and to describe the impact of a tetravalent dengue vaccine (TDV) booster dose vs placebo on antibody response for each of the 4 dengue serotypes at 1 month and 6 months post administration of the TDV booster or placebo.
Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes in the Period Prior to Booster at Visit 1 (Month 0 [Day 1])
Month 0 (Day 1) · titer
| Prior to Booster: DEN-304 | 76.8 titer |
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| Prior to Booster: DEN-315 | 88.6 titer |
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| Prior to Booster: DEN-304 | 539.6 titer |
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| Prior to Booster: DEN-315 | 425.6 titer |
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| Prior to Booster: DEN-304 | 33.7 titer |
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| Prior to Booster: DEN-315 | 29.5 titer |
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Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes in the Period Prior to Booster at Visit 2 (Month 12)
Month 12 · titer
| Prior to Booster: DEN-304 | 58.4 titer |
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| Prior to Booster: DEN-315 | 96.4 titer |
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| Prior to Booster: DEN-304 | 427.3 titer |
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| Prior to Booster: DEN-315 | 276.1 titer |
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| Prior to Booster: DEN-304 | 32.8 titer |
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| Prior to Booster: DEN-315 | 25.3 titer |
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Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes in the Period Prior to Booster at Visit 3 (Month 15) (DEN-304)
Month 15 (DEN-304) · titer
| Prior to Booster: DEN-304 | 121.7 titer |
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| Prior to Booster: DEN-304 | 560.2 titer |
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| Prior to Booster: DEN-304 | 40.3 titer |
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| Prior to Booster: DEN-304 | 37.6 titer |
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