ARDX drops RDX7675 program—shares rise: https://finance.yahoo.com/news/ardelyx-announces-updated-development-path-113000830.html Ardelyx reported clinically meaningful potassium lowering activity from its onset-of-action study for RDX7675 for the treatment of hyperkalemia; however, the company also observed an unexpected side effect of decreased serum bicarbonate. The company believes this will limit the commercial potential of RDX7675 and, as a result, has decided to discontinue development of RDX7675. CC today at 8:30am ET.