Long-Term Follow-Up Studies at Year 6, 7, 8, 9, 10: 2 Formulations of Combined Hepatitis A/B Vaccine Compared in Subjects Aged 12-15 Years

Long-Term Follow-Up Studies at Year 6, 7, 8, 9, 10: 2 Formulations of Combined Hepatitis A/B Vaccine Compared in Subjects Aged 12-15 Years

Evaluate Persistence of Immune Response of GSK Biologicals' TWINRIX™ Vaccine Administered According to 0,6 Month Schedule Versus TWINRIX™ JUNIOR Administered According to 0,1,6 Month Schedule, in Subjects Aged 12-15 Years at Time of First Vaccine Dose

To evaluate the persistence of anti-hepatitis A virus (anti-HAV) and anti-hepatitis B surface antigen (anti-HBs) antibodies up to 6, 7, 8, 9 and 10 years after administration of the first dose of the study vaccine.

Open, randomized, long-term antibody persistence studies. Immune persistence was compared between subjects who received one of the two formulations of GlaxoSmithKline Biologicals' combined hepatitis A and hepatitis B vaccine according to a two-dose or three-dose schedule. These long-term follow-up studies involved taking blood samples at approximately 6, 7, 8, 9 and 10 years after the primary vaccination of combined hepatitis A and B vaccine, to assess antibody persistence and a retrospective safety follow-up. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.

Anti-HAV antibody concentration cut-off value assessed was ≥ 15 milli-International Units per milliliter (mIU/mL).

Number of Subjects With Anti-Hepatitis B Surface Antigen (HBs) Antibody Concentrations Above the Cut-Off Value

Serious Adverse Events (SAE) Causally Related to Primary Vaccination or Related to Hepatitis A or B Infection or Related to Study Participation (Blood Sampling)

An SAE is any untoward medical occurrence that: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/ incapacity, is a congenital anomaly/birth defect in the offspring of a study subject, or may evolve into one of the outcomes listed above.

Inclusion Criteria: Healthy male and female volunteers vaccinated in study HAB-084. Written informed consent obtained from the subject before the blood sampling visit of each year. Exclusion Criteria: • none

Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.

Beran J, Kervyn D, Wertzova V, Hobzova L, Tichy P, Kuriyakose S, Leyssen M, Jacquet JM. Comparison of long-term (10 years) immunogenicity of two- and three-dose regimens of a combined hepatitis A and B vaccine in adolescents. Vaccine. 2010 Aug 23;28(37):5993-7. doi: 10.1016/j.vaccine.2010.06.104. Epub 2010 Jul 15.

Researchers can use this site to request access to anonymised patient level data and/or supporting documents from clinical studies to conduct further research.

For additional information about this study please refer to the GSK Clinical Study Register. The results of this study 100566 are summarised with studies 100567, 100568, 100569, and 100570 on the GSK Clinical Study Register.