Mirum Pharmaceuticals, Inc. is a biopharmaceutical company. The firm focuses on the development and commercialization of a late-stage pipeline of novel therapies for debilitating liver diseases. Its products include Maralixibat and Volixibat. The company was founded by Niall O'Donnel, Michael Grey and Christopher Peetz in May 2018 and is headquartered in Foster City, CA.