Chatsworth

Researchers are evaluating new medicines to prevent infection with Human Immunodeficiency Virus Type 1 HIV-1. This Phase 3 clinical trial aims to find out if taking MK-8527 once a month is more effective than a daily standard pre-exposure prophylaxis PrEP in preventing HIV-1 infection in women. The study also monitors the safety and tolerability of MK-8527 compared to standard treatment. Participants are randomly assigned to one of two groups one group receives 11 mg of MK-8527 once monthly along with a placebo daily pill resembling EmtricitabineTenofovir Disoproxil Fumarate FTCTDF, and the other group receives the daily FTCTDF pill plus a monthly placebo resembling MK-8527. This treatment phase lasts for up to approximately two years. Afterward, all participants take open-label FTCTDF daily for an additional 28 days. During the study, participants attend regular visits for up to about two years, during which researchers check for new HIV-1 infections, record any adverse events or side effects, and monitor if participants stop the study medication due to side effects. The primary outcomes include the number of participants who acquire HIV-1 infection, those who experience adverse events, and those who discontinue due to adverse events, all tracked over the treatment period.

Researchers are evaluating ibuzatrelvir, an oral medication, to determine its effectiveness and safety in adults and adolescents aged 12 years and older with COVID-19 who are not hospitalized but are at high risk for severe illness. The study is a phase 3, randomized, double-blind trial comparing ibuzatrelvir with a placebo. Participants must have confirmed SARS-CoV-2 infection with symptoms starting within 5 days and meet specific risk factor criteria based on age. Eligible participants will be randomly assigned to receive either ibuzatrelvir or a matching placebo twice daily by mouth for 5 days. The study allows co-administration of standard care treatments available locally. The total study duration is about 6 months, including follow-up. Participants will be monitored for emergency department visits related to COVID-19, hospitalizations, and mortality up to 28 days after starting treatment. Additional evaluations include symptom resolution, occurrence of long COVID symptoms, viral RNA levels, and safety measures such as adverse events through 24 weeks. The study involves regular assessments, including clinical visits and laboratory tests, to track outcomes and safety over time.