Phathom NDA for Erosive Esophagitis NDA Accepted

FDA has accepted for review a Phathom Pharmaceuticals NDA for vonoprazan as a treatment for adults in healing all grades of erosive esophagitis and relief of heartburn, as well as the maintenance of healing and relief of these conditions. Vonoprazan is described as a novel, orally administered investigational potassium-competitive acid blocker from a new class of acid suppressant agents. The agency has set a user fee review action target date of 1/11/2023.

The submission is based on data from the company’s previously announced pivotal PHALCON-EE Phase 3 trial. The company says PHALCON-EE successfully met its primary endpoints and key secondary superiority endpoints.

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