Conditions: Infections, Papillomavirus
Keywords: viral infections Human Papillomavirus (HPV) vaccine safety vaccine immunogenicity cervical cancer
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 961
Healthy volunteers: yes

Brief summary:
Human Papillomavirus (HPV) infection has been established as a necessary cause of cervical cancer. GlaxoSmithKline (GSK) Biologicals has developed an HPV vaccine (580299) which targets the 2 most common oncogenic HPV types (HPV-16 and HPV-18), found in approximately 70% of all cervical cancers. In previous trials this vaccine has been found to be efficacious in the prevention of incident and persistent HPV-16/18 infections and associated cytological abnormalities and cervical dysplasia. In this partially-blind study, GSK Biologicals will evaluate the safety and immunogenicity of the HPV vaccine using an alternative schedule and an alternative dosing when administered in healthy young females aged 9 to 25 years, as compared to the standard HPV vaccine. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007. The protocol posting has been updated following a protocol amendment.

Detailed description:

Arms:
arm 1: Subjects received 2 doses of the Cervarix vaccine, formulation 1, at Month 0 and Month 2, and 1 dose of placebo at Month 6. The Cervarix vaccine and placebo were administered intramuscularly into the deltoid of the non-dominant arm. arm 2: Subjects received 2 doses of the Cervarix vaccine, formulation 1, at Month 0 and Month 6, and 1 dose of placebo at Month 2. The Cervarix vaccine and placebo were administered intramuscularly into the deltoid of the non-dominant arm. arm 3: Subjects received 2 doses of the Cervarix vaccine, formulation 2, at Month 0 and Month 6, and 1 dose of placebo at Month 2. The Cervarix vaccine and placebo were administered intramuscularly into the deltoid of the non-dominant arm. arm 4: Subjects received 3 doses of the Cervarix vaccine, formulation 2, at Month 0, Month 2 and Month 6. The Cervarix vaccine was administered intramuscularly into the deltoid of the non-dominant arm.

Interventions: intervention 1: Cervarix intervention 2: Placebo
Intervention descriptions: intervention 1: Intramuscular injection, different dosing /schedule intervention 2: Intramuscular injection, different dosing /schedule

Protocol document: