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MK-8527 is an investigational antiretroviral (ARV) drug that is being studied as a potential PrEP product. Below are details on its distinct characteristics and ongoing Phase II clinical trial, as well as resources to learn more.

The Basics

  • Given once a month.
  • An oral pill.
  • Developed by Merck.
  • An ARV from a class of drugs first tested by another drug known as islatravir.
  • Drugs are classed by how they work in the body. Islatravir studies for prevention were discontinued when a fall in white blood cell counts (sometimes referred to as lymphocyte levels) was detected after the drug was administered. MK-8527 has a different chemical structure than islatravir, and studies so far show no safety risk.
  • Currently under investigation for use as prevention in a small Phase II clinical trial.
  • Also under investigation as a once-weekly pill for treatment.

The Trial

  • Conducted among approximately 350 HIV-negative adults in Israel, South Africa, and the USA.
  • Testing safety, tolerability, and pharmacokinetics.
  • Scheduled to run until December 2024.

Further Resources