Lujan De Cuyo

Researchers are evaluating how effective, safe, and tolerable a vaccine for Clostridioides difficile (C. difficile) infection is in adults aged 65 years and older. The study focuses on reducing the number of C. difficile infections, which can cause diarrhea, in this older adult population. This is a Phase 3, placebo-controlled, double-blinded, randomized trial involving participants who are at risk because of recent or planned contact with healthcare systems or recent antibiotic use. Participants will receive either the C. difficile vaccine or a saline placebo. Both are given by injection into the upper arm muscle. The study includes 3 planned clinic visits and 3 phone visits initially, followed by yearly clinic visits until the study ends. Participants will remain in the study until enough infection events have occurred—this period may last up to about three and a half years, but could be shorter or longer depending on how quickly events happen or if the study stops early due to clear results. Throughout the study, participants will report any side effects such as local reactions and systemic events for 7 days after each vaccination, and adverse events for up to one month. Serious adverse events are monitored for up to 18 months after the last dose. If participants experience 3 or more loose stools within 24 hours during the study, they must save the next stool and contact the study team for infection testing. This ongoing monitoring helps assess the vaccine's impact on preventing medically attended C. difficile infections over time.

Researchers are evaluating the effect of muvalaplin on reducing cardiovascular risk in adults with elevated lipoprotein(a) levels who either have atherosclerotic cardiovascular disease or are at risk for a heart attack or stroke. This Phase 3, randomized, double-blind, placebo-controlled study focuses on adults with high Lp(a) levels and prior or potential cardiovascular events. The study aims to assess the time to the first major adverse cardiovascular event over about 5.25 years. Participants will be randomly assigned to receive either muvalaplin or a placebo, both administered orally. The study includes individuals with Lp(a) levels of at least 175 nanomoles per liter who have had a prior cardiovascular event within 10 years or are at risk for a first event due to conditions such as coronary artery disease, carotid stenosis, peripheral artery disease, high coronary artery calcium score, reduced kidney function with diabetes, or other high-risk factors. The treatment period lasts through the study duration, with close monitoring. During the study, participants will be regularly evaluated to track the occurrence of major adverse cardiovascular events, including heart attacks and strokes. Safety assessments will monitor blood pressure, kidney function, and heart failure status among other health indicators. The primary outcome measures the time to the first major cardiovascular event from baseline up to the end of the study, which spans approximately 5.25 years.