Immunogenicity and Safety of a Tetravalent Dengue Vaccine Booster Injection in Subjects Who Previously Completed a 3-dose Schedule

Summary

The aim of the study was to assess and describe the booster effect of a tetravalent CYD dengue vaccine dose administered about 5 years or more after the completion of a 3-dose vaccination schedule in Singapore. Primary Objective: * To demonstrate the non-inferiority in terms of geometric mean of titer ratios (GMTRs) of a CYD dengue vaccine booster compared to the third CYD dengue vaccine injection in participants from CYD28 trial (participants from Group 1 only). Secondary Objectives: * If the primary objective of non-inferiority achieved: To demonstrate the superiority, in terms of GMTRs, of a CYD dengue vaccine booster compared to the third CYD dengue vaccine injection in participants from CYD28 trial (participants from Group 1 only). * To describe the immune responses elicited by the CYD dengue vaccine booster or placebo injection in participants who received three doses of the CYD dengue vaccine in the CYD28 trial in all participants. * To describe the neutralizing antibody levels of each dengue serotype Post Dose 3 (CYD28 participants) and immediately prior to booster or placebo injection in all participants. * To describe the neutralizing antibody persistence 6 months, 1 year and 2 years post booster or placebo injection in all study participants. * To evaluate the safety of booster vaccination with CYD dengue vaccine in all participants.

Timeline

Start

2016-07-01

Primary completion

2017-03-18

Completion

2019-01-18

Publications

• Results Park J, Archuleta S, Oh MH, Shek LP, Jin J, Bonaparte M, Fargo C, Bouckenooghe A. Immunogenicity and safety of a dengue vaccine given as a booster in Singapore: a randomized Phase II, placebo-controlled trial evaluating its effects 5-6 years after completion of the primary series. Hum Vaccin Immunother. 2020 Mar 3;16(3):523-529. doi: 10.1080/21645515.2019.1661204. Epub 2019 Nov 5.
• Park J, Archuleta S, Oh MH, Shek LP, Wang H, Bonaparte M, Frago C, Bouckenooghe A, Jantet-Blaudez F, Begue S, Gimenez-Fourage S, Pagnon A. Humoral and cellular immunogenicity and safety following a booster dose of a tetravalent dengue vaccine 5+ years after completion of the primary series in Singapore: 2-year follow-up of a randomized phase II, placebo-controlled trial. Hum Vaccin Immunother. 2021 Jul 3;17(7):2107-2116. doi: 10.1080/21645515.2020.1861875. Epub 2021 Feb 24.

Drugs

Indications