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SPN-812

Phase 3

Attention-Deficit/Hyperactivity Disorder | Small molecule | Other |Supernus Pharmaceuticals, Inc.|Last Updated: Jun 25, 2025

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
UNCONTROLLEDBiomarker
Total Trials2
Total Enrollment1,559
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04143217Open-label Long-Term Safety and Efficacy of SPN-812 (Viloxazine Extended-release Capsule) in Adults With ADHDPHASE3 COMPLETED 159Jan 23, 2020Dec 14, 2022Feb 13, 202438 United States
NCT02736656Open-label Study to Evaluate Long-term Safety and Efficacy of SPN-812 (Viloxazine Extended-release Capsule)PHASE3 ACTIVE NOT_RECRUITING 1,400Feb 2, 2016Sep 1, 2026Jun 25, 202516 United States
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Study Endpoints
Primary Endpoints
Incidence of Adverse Events
Up to 156 weeks

The percent of subjects who took at least one dose of SPN-812 (Safety Population; N) and who reported at least one Adverse Event (n). The percent is calculated by dividing "the number of subjects who reported at least one Adverse Event (n)" by "the number of subjects in the Safety Population (N)" and multiplying the product by 100. The higher the percentage, the higher the incidence in the Safety Population

Secondary Endpoints
The Effect of SPN-812 on Overall ADHD Symptoms as Measured by the Adult ADHD Investigator Symptom Rating Scale (AISRS)
Baseline and Week 2, 4, 12, 20, 28, 36, 44, 52, 60, 68, 76, 84, 92, 100, 108, 116, and 124
The Effect of SPN-812 on Global Assessment of ADHD Symptom Severity as Measured by the Clinical Global Impression - Severity of Illness (CGI-S)
Baseline and Week 2, 4, 12, 20, 28, 36, 44, 52, 60, 68, 76, 84, 92, 100, 108, 116, and 124
The Effect of SPN-812 on Clinical Global Impression - Severity of Illness (CGI-S) Responder Rate
Week 2, 4, 12, 20, 28, 36, 44, 52, 60, 68, 76, 84, 92, 100, 108, 116, and 124
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Open-Label TreatmentEXPERIMENTALSPN-812 Open-Label Treatment 200mg to 600mg SPN-812 once daily for up to 156 weeks
Interventions
NameTypeDescription
SPN-812DRUGSPN-812 200 to 600 mg/day
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Eligibility Criteria
Age Range18 Years — 65 Years
SexALL
Healthy VolunteersNo
Study Sites38

\*Please note, Inclusion/Exclusion Criterion "A" applies to subjects who completed Study 812P306 and enrolled in Study 812P311 on either the same day or up to 7 days after the end of Study 812P306. Inclusion/Exclusion Criterion "B" applies to subjects who completed Study 812P306, but enrolled in stu...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT02736656primaryCompletionDate: changed
LOWMay 24, 2026NCT02736656studyFirstPostDate: changed