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Milestone Pharmaceuticals Announces NMPA Approval of Etripamil Nasal Spray for PSVT in China, Marking First Regulatory Approval of Etripamil Outside of the United States

$MISTPress releaseSep 3, 2026, 9:35 AM ETRead the release

China's NMPA has approved etripamil nasal spray for the treatment of paroxysmal supraventricular tachycardia in adults, marking the first regulatory approval of the drug outside the United States. The approval triggers a $2.0 million milestone payment to Milestone from Everest Medicines, its exclusive Greater China licensee, which will lead commercialization in a market with an estimated 3-6 million diagnosed PSVT patients. Milestone remains eligible for up to $98.0 million in additional milestones plus tiered royalties of up to 18% on future China sales.

Key figures

Drug Name
etripamil nasal spray (CARDAMYST)
Phase Of Trial
Phase 3
P value
0.0005
Royalty max
18%
Hazard ratio
3.002
Hazard ratio ci
95% CI: 1.578, 5.711
Psvt patients us
2 million
Psvt patients china
3-6 million
Milestone payment usd
2000000
Potential milestones usd
98000000

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