Broomfield

This research evaluates the long-term safety and effectiveness of pembrolizumab in participants with advanced tumors or hematologic malignancies who have previously taken part in Merck pembrolizumab-based studies. This phase 3 extension study includes participants currently on treatment or in follow-up from parent trials. The study has three phases based on participants prior treatment status First Course Phase, Survival Follow-up Phase, and Second Course Phase, allowing continuation or observation depending on prior participation. Participants receive pembrolizumab alone or combined with other treatments such as standard of care therapies, lenvatinib, olaparib, MK-4280, MK-4280A, or pembrolizumab with berahyaluronidase alfa. Dosing schedules vary by phase and regimen, including intravenous infusions of pembrolizumab every 3 or 6 weeks, oral lenvatinib capsules daily, oral olaparib tablets twice daily, and other biologics administered intravenously or subcutaneously. The study allows up to 35 doses in the First Course Phase and fewer doses in the Second Course Phase, with treatment durations adjusted for crossover eligibility and combination therapies. Participants are monitored through regular treatment visits involving drug administration and follow-up assessments. Researchers evaluate overall survival up to approximately 10 years, along with progression-free survival, event-free survival, and adverse events including serious and clinically significant side effects. The study includes ongoing safety monitoring up to around 40 months post-treatment. Participants remain under observation for long-term outcomes and potential treatment effects for many years after enrollment.

Researchers are evaluating the impact of two different default dialysate sodium concentrations on major cardiovascular events and death in adults receiving maintenance haemodialysis for end-stage kidney disease. This pragmatic, cluster-randomised, open-label Phase 4 study compares sodium levels of 137 mmoll and 140 mmoll in real-world dialysis settings across multiple sites globally. Dialysis sites will be randomly assigned to use either a default dialysate sodium concentration of 137 mmoll or 140 mmoll for at least 90% of dialysis sessions. Other aspects of patient care will follow standard local practices. Sites must consent to participate, and individual patients will provide waiver or opt-out consent. The study expects to enroll sites over 5 to 7 years, with each participant followed for approximately 2 to 5 years until the study endpoints are reached. Participants will receive dialysis at their assigned sites with the designated sodium concentration. Researchers will monitor the time to first occurrence of major cardiovascular events or death as the primary outcome. Secondary outcomes include other cardiovascular events and individual components of the composite outcomes. Data collection and patient monitoring will continue throughout the study period, estimated to last around five years per participant.