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R1 Therapeutics launches with oversubscribed $77.5 million Series A financing to advance first-in-class treatment for hyperphosphatemia in patients with chronic kidney disease

Series A co-led by Abingworth, DaVita Venture Group, and F-Prime with participation from Curie.Bio, SymBiosis, and U.S. Renal Care Partnership with Alebund Pharmaceuticals to gain exclusive global development and commercial rights outside of Greater China for AP306, a differentiated pan phosphate transporter inhibitor, the only agent blocking the active transport of phosphate Advancing Phase 2b clinical development of AP306 as a monotherapy for hyperphosphatemia in patients with chronic kidney disease on dialysis REDWOOD CITY, Calif., March 17, 2026 (GLOBE NEWSWIRE) -- R1 Therapeutics, Inc (“R1”), a clinical-stage biopharmaceutical company focused on the development of first-in-class therapies for patients with kidney disease, today announced its launch with an oversubscribed $77.5 million Series A financing, along with the exclusive global license to develop and commercialize AP306 outside of Greater China from China-based Alebund Pharmaceuticals, Ltd.