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Dipraglurant

Phase 2

Blepharospasm | Small molecule | Neurology |Addex Therapeutics Ltd|Last Updated: Oct 3, 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
RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment15
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05027997Exploratory Study of Dipraglurant (ADX48621) for the Treatment of Patients With BlepharospasmPHASE2 COMPLETED 15Oct 6, 2021Nov 27, 2022Oct 3, 20251 United States
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Study Endpoints
Primary Endpoints
Safety and tolerability of dipraglurant as measured by incidence of adverse events
Baseline to Day 2

The primary outcome will be testing the safety and tolerability of dipraglurant in patients with blepharospasm based on the incidence of adverse events reported by patients and/or as identified by the Investigator based on clinical assessments conducted during the study.

Computerized Motor Objective Rater (CMOR) analysis of blinking activity
Baseline to Day 2

Video analysis, by an independent rater, of the mean proportion of eye closure time, severity of periocular spasms, and blink rate. Decreased eye closure time, severity of periocular spasms and blink rate indicates improvement of blepharospasm symptoms.

Skintronics wearable analysis of blinking activity
Baseline to Day 2

Analysis of blinking activity as recorded on the Skintronics wearable device. Decreased blink activity indicates improvement of blepharospasm symptoms.

Secondary Endpoints
Jankovic Rating Scale (JRS) severity score
Baseline to Day 2
Jankovic Rating Scale (JRS) frequency score
Baseline to Day 2
Global Dystonia Severity Rating Scale (GDS)
Baseline to Day 2
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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Dipraglurant 50 mgEXPERIMENTAL -
Dipraglurant 100 mgEXPERIMENTAL -
PlaceboPLACEBO_COMPARATOR -
Interventions
NameTypeDescription
DipraglurantDRUGOral tablet
PlaceboDRUGOral matching placebo tablet
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Eligibility Criteria
Age Range18 Years — 85 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Patients with an established diagnosis of idiopathic benign essential blepharospasm * Must have had prior response to to botulinum toxin (BoNT) reported on last 2 consecutive injection cycles * Last injection of BoNT at least 8 weeks prior to Screening assessments * Patient is...

Countries:United States
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