Milestone Pharmaceuticals Reports First Quarter 2025 Financial Results and Provides Regulatory and Corporate Update

Core Viewpoint - Milestone Pharmaceuticals is actively addressing the Chemistry, Manufacturing, and Controls (CMC) issues raised by the FDA regarding its lead product CARDAMYST for the treatment of paroxysmal supraventricular tachycardia (PSVT) and is preparing for a Type A meeting with the FDA to resolve these issues [1][2][6]. Financial Results - As of March 31, 2025, the company reported cash, cash equivalents, and short-term investments totaling $56.0 million, a decrease from$69.7 million as of December 31, 2024 [11]. - The company reported no revenue for the first quarter of 2025, consistent with the same period in 2024 [11]. - Research and development expenses increased to $5.0 million in Q1 2025 from$3.6 million in Q1 2024, primarily due to higher consulting costs [11]. - General and administrative expenses rose to $5.2 million in Q1 2025 from$4.0 million in the prior year, driven by increased outside service costs [11]. - Commercial expenses surged to $10.4 million in Q1 2025 from$2.9 million in Q1 2024, reflecting preparations for the launch of CARDAMYST [11]. - The net loss for the first quarter of 2025 was $20.8 million, compared to a net loss of$10.4 million in the same period last year [11]. Product Development and Regulatory Updates - The FDA issued a Complete Response Letter (CRL) for CARDAMYST in March 2025, citing two key CMC issues: the need for additional information on nitrosamine impurities and a new facility inspection to ensure compliance with Good Manufacturing Practices (GMP) [6]. - The Phase 3 study protocol for etripamil in patients with atrial fibrillation with rapid ventricular rate (AFib-RVR) has been finalized, but enrollment is paused to focus on resolving the CRL for PSVT [4]. - A new method of use patent for etripamil nasal spray was issued, potentially extending intellectual property protection until July 2042 [6]. - CARDAMYST was recognized in an independent survey as a new drug expected to significantly impact patient health, with 40% of respondents selecting it [6]. Company Overview - Milestone Pharmaceuticals is focused on developing innovative cardiovascular solutions, with etripamil as its lead investigational product designed for self-administration in treating symptomatic episodes of PSVT and AFib-RVR [9][8].