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Researchers are evaluating AP301, a novel iron-based phosphate binder, in patients with chronic kidney disease who are receiving maintenance dialysis and have elevated blood phosphate levels. This phase 3, randomized, double-blind study aims to determine whether AP301 lowers blood phosphate and how it affects serum calcium, calcium times phosphate, and intact parathyroid hormone levels. The trial also assesses any discomfort or medical problems during treatment and its impact on quality of life in Chinese patients. Participants will first stop all phosphate-lowering medications. They will then take either AP301 or a low-dose comparator considered ineffective three times daily for 8 weeks. Following this, all participants receive AP301 three times daily for 24 weeks, with dose adjustments based on blood phosphate levels and physician judgment. Finally, participants will take either AP301 or the comparator three times daily for 3 weeks. Additional treatments may be given if blood phosphate levels become too high or low. During the study, participants will undergo regular assessments including blood tests to monitor serum phosphate, calcium, and parathyroid hormone levels. Electrocardiogram tests will measure changes in QT intervals. Safety is monitored by tracking adverse events throughout the trial, which lasts up to 37 weeks. The primary outcome is the change in serum phosphate concentration from baseline to the end of week 8, with ongoing evaluations over the entire study period.

Researchers are conducting a combined Phase 2b and Phase 3 clinical trial to study CSL300 Clazakizumab in adults with end stage kidney disease ESKD who are undergoing maintenance dialysis. The study aims to find the right dose of CSL300 and then evaluate its effect on cardiovascular outcomes and safety in people with systemic inflammation and either atherosclerotic cardiovascular disease ASCVD or diabetes. This is a randomized, double-blind, placebo-controlled study involving multiple centers. Participants will receive intravenous IV administration of either CSL300 or a placebo. The Phase 2b part focuses on determining the appropriate dose of CSL300 compared to placebo over about 12 weeks, while the Phase 3 part examines CSL300s effect on cardiovascular events over approximately five years. The study includes different dosing groups in Phase 2b and a larger comparison of CSL300 versus placebo in Phase 3. During the study, participants will be monitored regularly with blood tests that measure inflammation markers such as high-sensitivity C-reactive protein hs-CRP, cardiovascular events, and safety outcomes. Researchers will track changes in various blood components and adverse events up to 32 weeks in Phase 2b and follow cardiovascular outcomes for up to five years in Phase 3. The total participation lasts through these periods with scheduled assessments to evaluate treatment effects and safety.