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Etripamil NS

Phase 3

Paroxysmal Supraventricular Tachycardia | Small molecule | Other |Milestone Pharmaceuticals Inc.|Last Updated: May 15, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
NO_TREATMENT_CONTROLLEDBiomarker
Total Trials3
Total Enrollment1,306
FDA Designations
No designations recorded
Clinical Trials (3)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04952610Etripamil Nasal Spray in Patients With Paroxysmal Supraventricular TachycardiaPHASE3 COMPLETED 130Dec 13, 2021Apr 10, 2026May 15, 202623 United States, Canada
NCT04072835Safety Study of Etripamil Nasal Spray for Patients With Paroxysmal Supraventricular Tachycardia. NODE-303PHASE3 COMPLETED 1,116Sep 23, 2019Jan 26, 2023May 23, 2024124 United States, Argentina +3
NCT05763953The NODE-202 Study (Study of Etripamil Nasal Spray in Pediatric Patients)PHASE2 RECRUITING 60Dec 11, 2023Jun 30, 2027Aug 1, 202510 United States, Canada +2
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Study Endpoints
Primary Endpoints
The safety of self-administered etripamil Nasal Spray (NS) for treatment of episodes of PSVT outside of the clinical setting as assessed by patient-reported adverse events.
Up to 3 years
Number of Participants With Adverse Events for Self-administered Etripamil NS Outside of the Clinical Setting.
From Baseline until a maximum of 4 episodes of perceived PSVT are treated with study drug, up to a maximum duration of 40 months.

Number of participants with any adverse events experienced from baseline up to the final study visit including the treatment of up to 4 perceived PSVT episodes.

Efficacy: The percentage of patients converting to sinus rhythm (SR) in the first 15 minutes after administration of etripamil NS.
15 minutes after administration of etripamil NS

A successful conversion is defined as conversion of PSVT to SR that is maintained for at least 30 seconds

Secondary Endpoints
Time to Conversion
Time to conversion up to 60 minutes after etripamil administration.
Efficacy: Time to termination of the PSVT episode and conversion to SR
60 minutes after administration of etripamil NS
Efficacy: Percentage of patients requiring additional medical intervention treatment for the PSVT episode in the first 15 minutes after study drug administration.
15 minutes after administration of etripamil NS
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Etripamil NS 70 mgEXPERIMENTALSelf- administration of a dose of 70 mg of etripamil. Patients will be provided with a maximum of 4 pre-filled devices at a time. If the symptoms of PSVT persist 10 minutes after the first dose of etripamil NS 70 mg, a second dose of etripamil NS 70 mg can be self-administered by the patient. A second dose of etripamil NS 70 mg should be taken not earlier than 10, and not later than 15 minutes after the first dose.
Etripamil NSEXPERIMENTALParticipants self-administered etripamil NS 70 mg. After implementation of protocol amendment 2.1 (16 March 2021), participants had the option to administer a second dose of etripamil 70 mg 10 minutes after the first dose, if PSVT symptoms persisted
Not TreatedNO_INTERVENTIONParticipants not treated with etripamil NS for a PSVT episode.
Etripamil NS 70mgEXPERIMENTALPatients will be administered by study site personnel
Interventions
NameTypeDescription
Etripamil NS 70 mgDRUGEtripamil will be administered via the Aptar Pharma Nasal Spray Bidose System.
Aptar Pharma Nasal Spray Bidose SystemDEVICEAptar Pharma Nasal Spray Bidose System will be supplied as prefilled devices packaged into child-resistant boxes with instructions for use provided in the study drug box.
Etripamil NSDRUGParticipants were provided with an ambulatory Cardiac Monitoring System (CMS) to help document PSVT episodes. The CMS was self-applied by the participant, when PSVT symptoms begin. Participants self-administered etripamil NS if vagal maneuver was ineffective. After implementation of protocol amendment 2.1, participants had the option to administer a second dose of etripamil 70 mg 10 minutes after the first dose, if symptoms persisted. After an episode of PSVT where drug was administered, the participant returned to the investigative site for a study visit and was given the option to continue in NODE-303 and manage up to three subsequent episodes of PSVT with etripamil NS for a maximum of four episodes.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites23

Inclusion Criteria: A patient will be eligible for study participation if they meet all of the following criteria: 1. Has participated in a Milestone Pharmaceuticals Inc. clinical research trial of etripamil NS for the treatment of PSVT (NODE-301 Part1, RAPID (NODE-301 Part 2), NODE-302, or NODE-3...

Countries:United StatesCanadaArgentinaBrazilColombiaGermanySpain
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT05763953primaryCompletionDate: changed
HIGHMay 26, 2026NCT04952610Status: ENROLLING_BY_INVITATION → COMPLETED
LOWMay 24, 2026NCT05763953studyFirstPostDate: changed
LOWMay 24, 2026NCT04952610studyFirstPostDate: changed