TITLE

Efficacy Results of a Trial of a Herpes Simplex Vaccine

AUTHOR(S)
Belshe, Robert B.; Leone, Peter A.; Bernstein, David I.; Wald, Anna; Levin, Myron J.; Stapleton, Jack T.; Gorfinkel, Iris; Morrow, Rhoda L. Ashley; Ewell, Marian G.; Stokes-Riner, Abbie; Dubin, Gary; Heineman, Thomas C.; Schulte, Joann M.; Deal, Carolyn D.
PUB. DATE
January 2012
SOURCE
New England Journal of Medicine;1/5/2012, Vol. 366 Issue 1, p34
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Two previous studies of a herpes simplex virus type 2 (HSV-2) subunit vaccine containing glycoprotein D in HSV-discordant couples revealed 73% and 74% efficacy against genital disease in women who were negative for both HSV type 1 (HSV-1) and HSV-2 antibodies. Efficacy was not observed in men or HSV-1 seropositive women. Methods: We conducted a randomized, double-blind efficacy field trial involving 8323 women 18 to 30 years of age who were negative for antibodies to HSV-1 and HSV-2. At months 0, 1, and 6, some subjects received the investigational vaccine, consisting of 20 �g of glycoprotein D from HSV-2 with alum and 3-O-deacylated monophosphoryl lipid A as an adjuvant; control subjects received the hepatitis A vaccine, at a dose of 720 enzyme-linked immunosorbent assay (ELISA) units. The primary end point was occurrence of genital herpes disease due to either HSV-1 or HSV-2 from month 2 (1 month after dose 2) through month 20. Results: The HSV vaccine was associated with an increased risk of local reactions as compared with the control vaccine, and it elicited ELISA and neutralizing antibodies to HSV-2. Overall, the vaccine was not efficacious; vaccine efficacy was 20% (95% confidence interval [CI], -29 to 50) against genital herpes disease. However, efficacy against HSV-1 genital disease was 58% (95% CI, 12 to 80). Vaccine efficacy against HSV-1 infection (with or without disease) was 35% (95% CI, 13 to 52), but efficacy against HSV-2 infection was not observed (-8%; 95% CI, -59 to 26). Conclusions: In a study population that was representative of the general population of HSV-1� and HSV-2�seronegative women, the investigational vaccine was effective in preventing HSV-1 genital disease and infection but not in preventing HSV-2 disease or infection. (Funded by the National Institute of Allergy and Infectious Diseases and GlaxoSmithKline; ClinicalTrials.gov number, NCT00057330.)
ACCESSION #
70209986

 

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