Famciclovir for the suppression of symptomatic and asymptomatic herpes simplex virus reactivation in HIV-infected persons. A double-blind, placebo-controlled trial.
BACKGROUND: Herpes simplex virus (HSV) infection is one of the most common opportunistic infections in HIV-infected persons. However, most documentation of the effectiveness of antiviral therapy in reducing HSV reactivation is anecdotal. OBJECTIVE: To evaluate the quantitative effect of antiviral therapy on the frequency of HSV reactivation in HIV-infected persons. DESIGN: Double-blind, placebo-controlled, crossover trial. SETTING: Research clinic at a university hospital. PATIENTS: 48 persons (45 men and 3 women) who were HIV positive and HSV seropositive. INTERVENTION: Patients were randomly assigned to receive famciclovir, 500 mg orally twice daily, or placebo for 8 weeks. They then crossed over to receive the other regimen after a 1-week washout period. MEASUREMENTS: Patients obtained daily cultures of their perirectal, urethral, oral, and genital areas and kept dairy records of signs and symptoms of genital and oral-labial herpes. RESULTS: The median CD4 cell count at study entry was 384 cells/mm3. In the intention-to-treat analysis of the first study period, HSV was isolated on 122 of 1114 (11%) placebo days compared with 9 of 1071 (1%) famciclovir days (relative risk, 0.15; P < 0.001). For patients who completed the crossover, the median difference in days with symptoms between placebo and famciclovir was 13.8% of days and the median difference in days on which HSV was isolated was 5.4% of days (P < 0.001 for both). Percentage of days with HSV-2 shedding was reduced from 9.7% to 1.3%. Breakthrough reactivations that occurred while patients were receiving famciclovir were infrequent, short, and often asymptomatic, HSV-2 isolates from these reactivations were susceptible to penciclovir in vitro. CONCLUSIONS: Antiviral chemotherapy with famciclovir results in clinically and statistically significant reductions in the symptoms associated with HSV infection and the symptomatic and asymptomatic shedding of HSV among HIV-positive persons.[1]References
- Famciclovir for the suppression of symptomatic and asymptomatic herpes simplex virus reactivation in HIV-infected persons. A double-blind, placebo-controlled trial. Schacker, T., Hu, H.L., Koelle, D.M., Zeh, J., Saltzman, R., Boon, R., Shaughnessy, M., Barnum, G., Corey, L. Ann. Intern. Med. (1998) [Pubmed]
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