title: Safety and immunogenicity of a hepatitis B vaccine formulated with a novel adjuvant system.
abstract: A formulation of recombinant hepatitis B surface antigen (HBsAg) combined with a novel adjuvant system, SBAS4--a combination of aluminium salt and monophosphoryl lipid A (MPL), was assessed in 27 healthy adult volunteers with a commercial vaccine (Engerix-B) as control. After three doses (0, 1, 6 months schedule), reactogenicity profiles were similar. Local reactions were essentially mild, the most frequent being soreness at the injection site. Seroprotection was achieved after two doses in all subjects given the candidate vaccine, all Engerix-B vaccines being seroprotected after the third dose. After the second and third doses, higher anti-HBs Geometric Mean Titres (GMTs) were observed in the group which received the formulation with the novel adjuvant system, and cellular immunity, measured as HBsAg-specific lymphoproliferation was stronger than with Engerix-B. These results indicate that the new formulation is safe, well-tolerated and immunogenic and may promote more rapid protection against hepatitis B infection.
authors.affiliation: WHO Collaborating Centre for the Prevention and Control of Viral Hepatitis, Department of Epidemiology and Community Medicine, University of Antwerp, Belgium.
authors.forename: S
authors.initials: S
authors.lastname: Thoelen
authors.forename: P
authors.initials: P
authors.lastname: Van Damme
authors.forename: C
authors.initials: C
authors.lastname: Mathei
authors.forename: G
authors.initials: G
authors.lastname: Leroux-Roels
authors.forename: I
authors.initials: I
authors.lastname: Desombere
authors.forename: A
authors.initials: A
authors.lastname: Safary
authors.forename: P
authors.initials: P
authors.lastname: Vandepapeliere
authors.forename: M
authors.initials: M
authors.lastname: Slaoui
authors.forename: A
authors.initials: A
authors.lastname: Meheus
mesh_terms: D000276:Adjuvants, Immunologic / Q000009:adverse effects / Q000494:pharmacology*; D000328:Adult; D017607:Aluminum Compounds / Q000009:adverse effects / Q000276:immunology / Q000494:pharmacology*; D000908:Antibodies, Fungal / Q000096:biosynthesis / Q000276:immunology; D000917:Antibody Formation / Q000187:drug effects; D004311:Double-Blind Method; D005260:Female; D006514:Hepatitis B Surface Antigens / Q000276:immunology; D017325:Hepatitis B Vaccines / Q000009:adverse effects / Q000276:immunology / Q000494:pharmacology*; D006801:Humans; D007111:Immunity, Cellular / Q000187:drug effects; D008050:Lipid A / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000276:immunology / Q000494:pharmacology; D008297:Male
chemical_list: D000276:Adjuvants, Immunologic; D017607:Aluminum Compounds; D000908:Antibodies, Fungal; D006514:Hepatitis B Surface Antigens; D017325:Hepatitis B Vaccines; D008050:Lipid A; C048436:monophosphoryl lipid A