Roughly six weeks after regaining rights to first-in-class NHE3 inhibitor tenapanor from AstraZeneca PLC, Ardelyx Inc. is planning a Phase IIb study in hyperphosphatasia where it hopes to show lower doses can sufficiently reduce serum phosphate levels while minimizing adverse events that led to treatment discontinuations in a prior Phase IIb trial.
During its investor day presentation July 14, the Fremont, Calif.-based company outlined plans for that program as well for Phase...