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Vanquix Auto-Injector

Phase 3

Seizures | Small molecule | Neurology |Pfizer, Inc.|Last Updated: Sep 23, 2016

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
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment234
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00319501Efficacy and Safety of Diazepam in the Management of Refractory Epilepsy in Selected Patients Who Require Intermittent Medical Intervention for Acute Repetitive Seizures.PHASE3 COMPLETED 234Jan 1, 2006Jul 1, 2014Sep 23, 201686 United States
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Study Endpoints
Primary Endpoints
Time to Next Seizure or Rescue Medication During the Double-blind Period (Kaplan-Meier 50th Percentile)
From 15 minutes to 12 hours after study drug administration for an episode of ARS during the Double-blind Period

An event was defined as an episode of or required rescue medication for an episode of acute repetitive seizures (ARS) within 15 minutes to 12 hours following study drug administration. Patients without an ARS event were censored at 12 hours. Diaries were provided; if no diary was returned, or the diary did not provide answers to questions about seizures and rescue during the 12-hour follow-up period, the patient was considered censored as of 15 minutes past the treatment time, unless another contact was documented. If seizure control following study drug administration was inadequate, diazepam rectal gel was provided as a rescue medication, given only in the first 4 hours after study drug administration and only if the caregiver was directed to do so by the Investigator or designee at the time of the ARS episode. Patients and their caregivers were trained to recognize the onset of an episode of ARS and when and how to administer study drug.

Percentage of Participants With an Event (Next Seizure or Rescue Medication) During the Open-label Period
From 15 minutes to 12 hours after study drug administration for an episode of ARS during the Double-blind Period

An event was defined as an episode of or required rescue medication for an episode of acute repetitive seizures (ARS) within 15 minutes to 12 hours following study drug administration. Patients without an ARS event were censored at 12 hours. Diaries were provided; if no diary was returned, or the diary did not provide answers to questions about seizures and rescue during the 12-hour follow-up period, the patient was considered censored as of 15 minutes past the treatment time, unless another contact was documented. If seizure control following study drug administration was inadequate, diazepam rectal gel was provided as a rescue medication, given only in the first 4 hours after study drug administration and only if the caregiver was directed to do so by the Investigator or designee at the time of the ARS episode. Patients and their caregivers were trained to recognize the onset of an episode of ARS and when and how to administer study drug.

Secondary Endpoints
Number of Participants Requiring Rescue Medication During the Double-blind Period
From 15 minutes to 12 hours following study drug administration for an episode of ARS during the Double-blind Period
Number of Participants Requiring Emergency Department Visits During the Double-blind Period
From 15 minutes to 12 hours following study drug administration for onset of an episode of ARS during the Double-blind Period
Number of Participants Requiring Rescue Medical Care Other Than Rescue Medication or Emergency Department Visits During the Double-blind Period
From 15 minutes to 12 hours following study drug administration for an episode of ARS during the Double-blind Period
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
PlaceboPLACEBO_COMPARATORDuring the Double-blind Period, participants received a single, age- and weight-appropriate dose of placebo solution as a deep intramuscular injection in the mid to outer thigh. Drug was administered by a caregiver using a spring-driven, pressure-activated, prefilled autoinjector at the onset of an episode of acute repetitive seizures (ARS).
DiazepamEXPERIMENTALDuring the Double-blind Period, participants received a single, age- and weight-appropriate dose of diazepam solution, ranging from 0.2 to 0.5 mg/kg, as a deep intramuscular injection in the mid to outer thigh. Additional doses were permissible during the Open-label Period. Drug was administered by a caregiver using a spring-driven, pressure-activated, prefilled autoinjector at the onset of an episode of ARS.
Interventions
NameTypeDescription
PlaceboDRUGIntramuscular autoinjector; administered at onset of an episode
Vanquix Auto-Injector (Diazepam Injection)DRUGIntramuscular autoinjector: 5, 10, 15, or 20 mg (based on participant's age and weight); administered at the onset of an episode
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Eligibility Criteria
Age Range2 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites86

Key Inclusion Criteria For Patient: * Older than 2 years of age and between 6 and 136 kg body weight * Recipient of clinical diagnosis of epilepsy, taking a stable antiepileptic drug regimen for at least 2 weeks, and requiring intermittent medical intervention to control episodes of acute repetiti...

Countries:United States
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