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Ardelyx Provides Regulatory Update on New Drug Application for Tenapanor

For the Control of Serum Phosphorus in Adult Patients with CKD on Dialysis.

Ardelyx, Inc, a biopharmaceutical company focused on the discovery, development, and commercialization of innovative first-in-class medicines to improve treatment for people with kidney and cardiorenal diseases, today announced that it received a letter from the U.S. Food and Drug Administration (the "FDA") on July 13, 2021, stating that, as part of its ongoing review of the company's New Drug Application ("NDA") for the control of serum phosphorus in adult patients with chronic kidney disease ("CKD") on dialysis, the FDA has identified deficiencies that preclude discussion of labeling and post-marketing requirements/commitments at this time. The letter stated that the notification does not reflect a final decision on the information under review. The company immediately requested a meeting to discuss the deficiencies and was notified by the FDA today that the request for a meeting was denied.    

While the FDA has not provided specific details regarding the deficiencies, the FDA noted that a key issue is the size of the treatment effect and its clinical relevance. 

"This is an extremely disheartening and disappointing communication from the FDA, particularly following the weeks of label discussions that occurred in early April, the fact that our NDA submission included three pivotal trials across 1,000 patients, all which met their primary and key secondary endpoints, as well as the additional data analyses we submitted in late April in response to the FDA's requests," said Mike Raab, president and chief executive officer of Ardelyx. "We plan to work with the FDA to learn more about the identified deficiencies and will seek to resolve them as quickly as possible."      

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Source: Ardelyx
Date: Jul 19, 2021

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