Quadrivalent Human Papillomavirus (types 6, 11, 16, 18) Recombinant Vaccine

**Semantic type:** Immunologic Factor|Pharmacologic Substance

**Definition:** A non-infectious recombinant, quadrivalent vaccine prepared from the highly purified virus-like particles (VLPs) of the major capsid (L1) protein of human papillomavirus (HPV) types 6, 11, 16, and 18 with immunoprophylactic activity. L1 proteins are produced by separate fermentations in recombinant Saccharomyces cerevisiae, self-assembled into VLPs, and adsorbed onto amorphous aluminium hydroxyphosphate sulfate adjuvant following purification. The immunoprophylactic efficacy of L1 VLP vaccines, such as quadrivalent human papillomavirus (types 6,11,16,18) recombinant vaccine, appear to be mediated by the development of humoral immune responses. HPV Types 16 and 18 account for approximately 70% of cervical cancers and HPV Types 6 and 11 account for approximately 90% of genital warts.

**Synonyms:** - Gardasil - Gardasil - Quadrivalent HPV [Type 6, 11, 16 and 18] L1 Virus-Like Particle vaccine - Recombinant Human Papillomavirus (HPV) Quadrivalent Vaccine - V501 - quadrivalent human papillomavirus (types 6, 11, 16, and 18) recombinant vaccine