Eagle Pharmaceuticals ("Eagle" or the "Company") (NASDAQ: EGRX) today announced that the Company has initiated the rolling submission of its New Drug Application (NDA) and filed the first part of the application to the U.S. Food and Drug Administration (FDA) for Ryanodex® (dantrolene sodium) for injectable suspension for the treatment of exertional heat stroke (EHS), an investigational new indication for the product. The rolling submission allows completed portions of an NDA to be submitted, which may then be reviewed by the FDA on an ongoing basis. The FDA had previously granted Fast Track Designation for the development of Ryanodex for the treatment of EHS, which allows for submission of parts of an NDA application (rolling review). The first part of this rolling submission includes the human safety and efficacy data from the clinical study in EHS patients conducted in a 'real-world' clinical setting, at the Emergency Department of four hospitals during the 2015 Hajj Islamic Pilgrimage, in the Kingdom of Saudi Arabia. Eagle is currently conducting animal studies to further support the safety and efficacy of Ryanodex for the treatment of EHS. The Prescription Drug User Fee Act (PDUFA) review clock will begin once the complete NDA has been submitted. The FDA provides designation of a drug as a Fast Track product if it is intended for the treatment of a serious or life-threatening disease or condition, and it demonstrates the potential to address unmet medical needs for such a disease or condition. This provision is intended to facilitate development and expedite review of drugs to treat serious and life-threatening conditions so that an approved drug product can reach the market expeditiously. Ryanodex is protected by two filed and five issued patents. "With no drug indicated for the treatment of EHS, initiation of the NDA submission process marks an important step forward in our efforts to make a meaningful difference in the lives of people affected by this potentially life-threatening condition. We look forward to working closely with the FDA towards the goal of making Ryanodex available to these patients as soon as possible," said Scott Tarriff, President and Chief Executive Officer of Eagle Pharmaceuticals.