Ardelyx was founded with a mission to discover, develop and commercialize innovative, first-in-class medicines that meet significant unmet medical needs. Ardelyx has two commercial products approved in the United States, IBSRELA® (tenapanor) and XPHOZAH® (tenapanor). Ardelyx has agreements for the development and commercialization of tenapanor outside of the U.S. Kyowa Kirin commercializes PHOZEVEL® (tenapanor) for hyperphosphatemia in Japan. A New Drug Application for tenapanor for hyperphosphatemia has be ...

Core Insights - Ardelyx, Inc. has appointed Merdad Parsey, M.D., Ph.D. to its board of directors, enhancing its leadership team with a veteran biotech expert [1][2] Company Overview - Ardelyx is focused on discovering, developing, and commercializing innovative, first-in-class medicines to address significant unmet medical needs [4] - The company has two commercial products approved in the U.S.: IBSRELA® (tenapanor) and XPHOZAH® (tenapanor), along with early-stage pipeline candidates [4] - Ardelyx has international agreements for the development and commercialization of tenapanor, including partnerships with Kyowa Kirin in Japan and Fosun Pharma in China [4] Leadership Experience - Dr. Parsey brings over 25 years of experience in the pharmaceutical and biopharma industries, having held various clinical development and leadership roles [2][3] - His recent position was Chief Medical Officer at Gilead Sciences from 2019 until his retirement in 2025 [2] - Dr. Parsey has also served in senior roles at Genentech and as CEO of 3-V Biosciences, contributing to his extensive expertise in clinical strategy and development [2] Educational Background - Dr. Parsey holds a B.S. in microbiology and biochemistry, an M.D., and a Ph.D. in immunology from the University of Maryland [3] - He completed his internal medicine residency at Stanford University and a fellowship in pulmonary and critical care at the University of Colorado [3]

Company Overview - Ardelyx, Inc. is a biopharmaceutical company focused on discovering, developing, and commercializing innovative, first-in-class medicines to address significant unmet medical needs [1][12] - The company has two commercial products approved in the United States: IBSRELA and XPHOZAH, both containing the active ingredient tenapanor [12] Product Information - XPHOZAH (tenapanor) is the first and only phosphate absorption inhibitor (PAI) approved by the U.S. FDA for reducing serum phosphorus in adults with chronic kidney disease (CKD) on dialysis [2][11] - It is indicated as add-on therapy for patients who have an inadequate response to phosphate binders or are intolerant to any dose of phosphate binder therapy [11] - XPHOZAH operates through a unique mechanism that blocks phosphate absorption at the primary pathway and is administered as a single tablet taken twice daily [2][6] Clinical Study Insights - The OPTIMIZE Study was a randomized, open-label trial involving 330 patients with CKD on dialysis and hyperphosphatemia, aimed at evaluating methods for initiating XPHOZAH to optimize phosphorus management [3] - A post-hoc analysis of this study has been accepted for presentation at the National Kidney Foundation Spring Clinical Meetings [1][4] Safety and Efficacy - Diarrhea was the most common side effect reported in clinical trials, occurring in 43-53% of patients, with severe diarrhea reported in 5% of patients [10] - The majority of diarrhea events were mild-to-moderate and typically resolved over time or with dose reduction [10] Industry Context - Hyperphosphatemia is a serious condition affecting the majority of the 550,000 patients in the U.S. with CKD on maintenance dialysis, necessitating effective management strategies [7] - The KDIGO treatment guidelines recommend lowering elevated phosphate levels toward the normal range of 2.5-4.5 mg/dL [7]