Safety and Immunogenicity of Norovirus GI.1/GII.4 Bivalent Virus-Like Particle (VLP) Vaccine in Children

Norovirus Clinical Trial

Official title: A Phase II, Randomized, Double-Blind, Dosage, Safety and Immunogenicity Trial of Intramuscular Norovirus GI.1/GII.4 Bivalent Virus-Like Particle Vaccine Combined With Aluminum Hydroxide Adjuvant in Children, Toddlers, and Infants

Status Completed

Clinical Trial Summary

The purpose of this study is to select the optimal formulation of the norovirus vaccine from different concentrations of virus-like particles (VLP) combined with aluminum hydroxide for further development in children.

Clinical Trial Description

The vaccine being tested in this study is called norovirus GI.1/GII.4 bivalent virus-like particle (VLP) vaccine with aluminum hydroxide. The norovirus vaccine is being tested to assess different formulations of the vaccine that will then be further developed. This study will look at the number of antibodies to norovirus formed in children, toddlers and infants who are administered different formulations of the norovirus vaccine.

The study enrolled 840 patients. Participants will be randomly assigned (by chance) to one of ten treatment groups—which will remain undisclosed to the participant and study doctor during the study (unless there is an urgent medical need).

All participants in Cohort 1 will be vaccinated on Day 1 and Day 29 of the study, and all participants in Cohort 2 will be vaccinated on Day 1, Day 56, and Day 112. All treatment groups in Cohort 1 will receive either one dose of the norovirus vaccine, or two doses. One treatment group in Cohort 2 will receive 2 doses of the norovirus vaccine, and the other group will receive 3. In order to keep the treatment undisclosed to the participant and the doctor in Cohort 1, those randomized to the one-dose groups will receive the norovirus vaccine on Day 1, followed by a dose of placebo vaccine on Day 29. In order to keep the treatment arms undisclosed to the participant and the doctor in Cohort 2, those randomized to the two-dose groups will receive the norovirus vaccine on Day 1 and Day 56, followed by a dose of placebo vaccine on Day 112. Placebo vaccine is saline solution. Participants will be asked to record any symptoms that may be related to the vaccine or the injection site in a diary card for 7 days after each vaccination.

This multi-center trial will be conducted in Finland, Panama, and Colombia. The overall time to participate in this study is up to 210 days for participants in Cohort 1 and up to 293 Days for participants in Cohort 2. Participants in Cohort 1 will make 6 visits to the clinic, and participants in Cohort 2 will make 10 visits to the clinic. ;

Related Conditions & MeSH terms

• Norovirus

• NCT number: NCT02153112
• Study type: Interventional
• Source: Takeda
• Status: Completed
• Phase: Phase 2
• Start date: June 23, 2015
• Completion date: June 20, 2018