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Botulinum Toxin Type B

Phase 2

Drooling | Monoclonal antibody | Other |Supernus Pharmaceuticals, Inc.|Last Updated: Apr 21, 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
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment54
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00515437A Multi-Center Study of MYOBLOC for the Treatment of Sialorrhea in Parkinson's Disease PatientsPHASE2 COMPLETED 54Jul 1, 2007Sep 1, 2008Apr 21, 202618 United States
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Study Endpoints
Primary Endpoints
Change in Drooling Frequency & Severity Scale (DFSS)at Wk 4 Post-injection
baseline versus 4 weeks post-injection

9 point scale, 0 = no drooling, 9 = severe drooling

Secondary Endpoints
Change in Drooling Frequency and Severity Scale (DFSS) at Wk 12 Post-injection
baseline vs 12 weeks post injection
Change in Unstimulated Salivary Flow Rate at Wk 4 Post-injection
baseline vs 4 weeks post-injection
Change in Unstimulated Salivary Flow Rate at Wk 12 Post-injection
baseline vs 12 weeks post-injection
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Treatment 1EXPERIMENTAL1,500 Units (0.3 mL) MYOBLOC (0.3mL) with 500 Units (0.1 mL) injected into each parotid gland and 250 Units (0.05 mL) inject into each submandibular gland and will be compared to pooled placebo
Treatment 2EXPERIMENTAL2,500 Units of (0.5mL) MYOBLOC with 1,000 Units (0.2 mL) injected into each parotid gland and 250 Units (0.05mL) inject into each submandibular gland and will be compared to pooled placebo
Treatment 3EXPERIMENTAL3,500 Units of (0.7mL) MYOBLOC with 1,500 Units (0.3 mL) injected into each parotid gland and 250 Units (0.05mL) inject into each submandibular gland and will be compared to pooled placebo
Treatment 4PLACEBO_COMPARATORvolume-matched placebo injected into each parotid gland and each submandibular gland
Interventions
NameTypeDescription
Botulinum Toxin Type B (Myobloc)BIOLOGICAL -
Matched placebo to MyoblocBIOLOGICAL -
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Eligibility Criteria
Age Range18 Years — 85 Years
SexALL
Healthy VolunteersNo
Study Sites18

Inclusion Criteria: * Parkinsons' Disease patients with Sialorrhea for at least 3 months Exclusion Criteria: * Patients with non-idiopathic PD parkinsonism * Patients previously exposed to botulinum toxins * Patients with a history of aspiration pneumonia, moderate/severe choking and/or moderate/...

Countries:United States
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