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Dipraglurant

Phase 2

Blepharospasm | Small molecule | Neurology |Addex Therapeutics Ltd|Last Updated: Oct 3, 2025

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment15

FDA Designations

No designations recorded

Clinical trial landscape

Dipraglurant · 1 trial · 2 indications

Phase 2 1
NCT05027997Exploratory Study of Dipraglurant (ADX48621) for the Treatment of Patients With BlepharospasmBlepharospasm
COMPLETED15 Analytics
PHASE2COMPLETED
Exploratory Study of Dipraglurant (ADX48621) for the Treatment of Patients With Blepharospasm
BlepharospasmUnlock trial analytics

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 to 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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Frequently asked questions about Dipraglurant

What is Dipraglurant used for in blepharospasm?

Dipraglurant is an investigational small molecule being studied for the treatment of blepharospasm, a type of focal dystonia characterized by involuntary eyelid spasms. It is currently in Phase 2 clinical development and has not been approved by regulatory authorities.

Who is developing Dipraglurant?

Dipraglurant is being developed by Addex Therapeutics Ltd, a biopharmaceutical company listed on the stock exchange under the ticker ADXN. The company is conducting clinical research to evaluate the drug's safety and efficacy in patients with blepharospasm.

What phase is Dipraglurant in?

Dipraglurant is in Phase 2 clinical development. A Phase 2 exploratory study has been completed, and the drug remains investigational, meaning it has not yet received regulatory approval for any use.

What clinical trials has Dipraglurant been in?

Dipraglurant has been studied in one completed Phase 2 clinical trial with the identifier NCT05027997. This randomized, double-blind, placebo-controlled study enrolled 15 participants with blepharospasm or dystonia in the United States.

Is Dipraglurant the same as ADX48621?

Yes, Dipraglurant is also known as ADX48621. The clinical trial NCT05027997 refers to the drug as Dipraglurant (ADX48621), confirming that both names refer to the same investigational compound.