RAHWAY, N.J., July 14, 2025 — Merck (NYSE: MRK), known as MSD outside of the United States and Canada, today announced the initiation of the EXPrESSIVE Phase 3 clinical trials, evaluating the safety and efficacy of MK-8527, an investigational once-monthly, oral nucleoside reverse transcriptase translocation inhibitor (NRTTI) for HIV pre-exposure prophylaxis (PrEP). The EXPrESSIVE-11 (MK-8527-011, NCT 07044297) trial will evaluate the safety and efficacy of MK-8527 among people with greater likelihood of HIV-1 exposure in 16 countries and will begin enrolling in August 2025. In collaboration with the Gates Foundation, the EXPrESSIVE-10 (MK-8527-010) trial will evaluate the safety and efficacy of MK-8527 in women and adolescent girls in sub-Saharan Africa and will begin enrolling in the next few months.
Read the full company press release here.
Source : Merck
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