Safety and Immunogenicity of Different Schedules of Takeda's Tetravalent Dengue Vaccine Candidate (TDV) in Healthy Participants

Dengue Fever Clinical Trial

Official title: A Phase II, Double-Blind, Controlled Trial to Assess the Safety and Immunogenicity of Different Schedules of Takeda's Tetravalent Dengue Vaccine Candidate (TDV) in Healthy Subjects Aged Between 2 and <18 Years and Living in Dengue Endemic Countries in Asia and Latin America

Status Completed

Clinical Trial Summary

The purpose of this study is to assess the humoral immune responses to three different dose schedules of Takeda's Tetravalent Dengue Vaccine Candidate (TDV) administered subcutaneously in healthy participants between 2 and <18 years of age living in dengue endemic countries.

Clinical Trial Description

The vaccine tested in this study is Takeda's Tetravalent Dengue Vaccine Candidate (TDV) which was administered in 3 different dosing schedules to participants aged from 2 to 17 years resident in dengue endemic countries. This study looked at the titers of antibodies to dengue fever elicited in people who received TDV.

The study randomized 1800 healthy participants. Participants were randomly assigned to one of the four treatment groups in a 1:2:5:1 ratio—which remained undisclosed to the participant and study doctor during the study (unless there was an urgent medical need):

• Group 1 - TDV 0.5 mL subcutaneous (SC) injection Days 1 and 91

• Group 2 - TDV 0.5 mL SC injection Day 1

• Group 3 - TDV 0.5 mL SC injection Days 1 and 365

• Group 4 - Placebo (dummy SC) - this is a liquid that looks like the study drug but has no active ingredient

A total of 600 participants were planned to be randomly included in immunogenicity analyses (approximately 100 participants planned in each of Group 1 and Group 4, and 200 participants planned in each of Group 2 and Group 3).

In order to keep the treatment arms undisclosed to the participant and the doctor, participants received a placebo injection at any study visit where TDV was not being administered (Days 1 and/or 91 and/or 365).

Participants were asked to record any symptoms that may be related to the vaccine or the injection site in a diary card for 28 days after each vaccination.

This multi-center trial was conducted in Asia and Latin America. Participants were followed for 48 months with 10 protocol-scheduled visits for participants included in the planned immunogenicity subset of approximately 600 subjects and 7 protocol-scheduled visits for subjects not included in the immunogenicity subset. ;

Related Conditions & MeSH terms

• Dengue
• Dengue Fever

• NCT number: NCT02302066
• Study type: Interventional
• Source: Takeda
• Status: Completed
• Phase: Phase 2
• Start date: December 5, 2014
• Completion date: February 18, 2019