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Your journey
1What's a trial
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More info
You can access this
clinical trial
if you have
HIV Infections
and you are
over 27
years old
This is a trial in the final phase before the treatment is released on the market.
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The purpose

Men who have sex with men (MSM) have an increased risk of developing anal human papillomavirus (HPV) infections, which can be a risk factor for anal cancer. HIV-infected women are also at risk of anal cancer. This study will evaluate the effectiveness of the Food and Drug Administration (FDA)-approved quadrivalent HPV vaccine, Gardasil, at preventing anal HPV infection in HIV-infected MSM and HIV-infected women.

Provided treatments

  • Biological: Quadrivalent HPV Vaccine
  • Biological: Placebo Vaccine for Male Participants Only
  • Biological: Placebo Vaccine for Female Participants Only

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT01461096. The sponsor of the trial is National Institute of Allergy and Infectious Diseases (NIAID) and it is looking for 575 volunteers for the current phase.
Official trial title:
A Randomized, Double-Blinded, Placebo-Controlled, Phase III Trial of the Quadrivalent HPV Vaccine to Prevent Anal Human Papillomavirus Infection in HIV-Infected Men and Women