Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/131960
Title: Recombinant DNA hepatitis B vaccine containing pre-S components of the HBV coat protein - A preliminary study on immunogenicity
Authors: Yap, I. 
Guan, R. 
Chan, S.H.
Issue Date: 1992
Citation: Yap, I., Guan, R., Chan, S.H. (1992). Recombinant DNA hepatitis B vaccine containing pre-S components of the HBV coat protein - A preliminary study on immunogenicity. Vaccine 10 (7) : 439-442. ScholarBank@NUS Repository.
Abstract: A novel recombinant hepatitis B vaccine, trademarked Sci-B-Vac, was evaluated for safety, tolerability and immunogenicity in an open label trial performed in Singapore. The experimental vaccine, derived from Chinese hamster ovary (CHO) cells, consists of hepatitis B surface antigen (HBsAg) particles harbouring all three viral envelope polypeptides, the major S protein and the minor Pre-S2 and Pre-S1, in their glycosylated and non-glycosylated forms. The vaccine was administered intramuscularly at 0, 1 and 6 months. No unexpected adverse effects were observed. A high level anti-HBs response to Sci-B-Vac was indicative of its immunogenicity. Subsequent to the third injection, 100% and 92% of the 10 μg and 5 μg dose recipients, respectively, were seroprotected (anti-HBs titres ≥ 10 mIU ml -1). Moreover, the geometric mean titres (GMT) of the anti-HBs response were very high: 2687 and 1473 mIU ml -1, respectively. An immunogenic advantage of Sci-B-Vac was also suggested by the rapid onset of antibody response: 96% of the 10 μg dose recipients were seroprotected with a GMT of 159 mIU ml -1, prior to the third injection.
Source Title: Vaccine
URI: http://scholarbank.nus.edu.sg/handle/10635/131960
ISSN: 0264410X
Appears in Collections:Staff Publications

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