A Study of Valacyclovir to Suppress HSV and HIV Shedding in Coinfected Persons

This study has been completed.
Information provided by:
University of Washington
ClinicalTrials.gov Identifier:
First received: September 8, 2005
Last updated: December 29, 2007
Last verified: December 2007

The primary objective of this research study is to assess if daily valacyclovir therapy for suppression of HSV-2 reactivation is associated with a decrease in mucosal HIV shedding in individuals co-infected with both HSV-2 and HIV.

Condition Intervention Phase
Herpes Simplex
HIV Infections
Drug: valacyclovir
Drug: placebo
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Prevention
Official Title: A Randomized, Double-Blind, Placebo Controlled Crossover Trial Using Valacyclovir to Suppress HSV and HIV Shedding in HIV-1, HSV-2 Coinfected Persons

Resource links provided by NLM:

Further study details as provided by University of Washington:

Primary Outcome Measures:
  • To assess reduction in mucosal HIV shedding associated with daily valacyclovir for suppression of HSV-2 reactivation. [ Time Frame: 18 weeks ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • To quantify increase in rectal and pharyngeal HIV-1 shedding associated with HSV-1 and HSV-2 reactivation. To determine reduction in systemic HIV RNA during valacyclovir therapy. To evaluate reduction in inflammatory cells and HIV replication. [ Time Frame: 18 weeks ] [ Designated as safety issue: No ]

Enrollment: 60
Study Start Date: March 2003
Study Completion Date: June 2006
Primary Completion Date: June 2006 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1 Drug: valacyclovir
1 gram daily for 8 weeks
Other Name: Valtrex
Placebo Comparator: 2 Drug: placebo
matching placebo for 8 weeks

Detailed Description:

Sexually transmitted diseases and genital ulcer disease (GUD) contribute significantly to the spread of HIV, as their presence is associated with higher rates of HIV acquisition in susceptible individuals. Herpes simplex virus-2 (HSV-2) is a major cause of GUD in developed and developing countries.

The primary objective of this research study is to assess if daily valacyclovir therapy for suppression of HSV-2 reactivation is associated with a decrease in mucosal HIV shedding in individuals co-infected with both HSV-2 and HIV.

This study is a randomized, double-blind, placebo-controlled, crossover trial. Sixty men who have sex with men (MSM) will be randomized to first receive either valacyclovir, 1 gram once a day, or matching placebo for 8 weeks. After a 2-week washout period during which all participants receive placebo, subjects then switch to the other treatment for the next 8 weeks.

At screening, informed consent is obtained and individuals will have blood drawn to test antibody status to HIV and HSV and well as to monitor CD4 count and plasma HIV RNA determination. At enrollment, oral, genital, and rectal specimens are obtained and additional blood is drawn. Participants are given a two-week supply of study medication and are instructed on the technique of collecting daily home samples and completing a diary. Following enrollment, they are asked to collect daily home oral and genital samples, as well as semen samples twice a week, for the full 18 weeks of the study. Participants return to the clinic three times per week for follow-up, for collection of oral and rectal specimens, and additional study medication. Rectal Biopsy is performed at weeks 8 and 18 for those individuals that signed the additional rectal biopsy consent form.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • HIV seropositive and HSV-2 seropositive
  • MSM (men having sex with men)
  • 18 years old or older

Exclusion Criteria:

  • Known history of adverse reaction to acyclovir or valacyclovir
  • Planned open label use of acyclovir, valacyclovir or famciclovir
  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT00161434

United States, Washington
Virology Research Clinic
Seattle, Washington, United States, 98122
Sponsors and Collaborators
University of Washington
Principal Investigator: Anna Wald, MD, MPH University of Washington
  More Information

No publications provided

Responsible Party: Anna Wald, MD, MPH, University of Washington
ClinicalTrials.gov Identifier: NCT00161434     History of Changes
Other Study ID Numbers: 02-6505-A, P01 AI 30731
Study First Received: September 8, 2005
Last Updated: December 29, 2007
Health Authority: United States: Institutional Review Board

Keywords provided by University of Washington:

Additional relevant MeSH terms:
Herpes Simplex
DNA Virus Infections
Herpesviridae Infections
Skin Diseases
Skin Diseases, Infectious
Skin Diseases, Viral
Virus Diseases
Anti-Infective Agents
Antiviral Agents
Pharmacologic Actions
Therapeutic Uses

ClinicalTrials.gov processed this record on August 27, 2015