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A Multinational, Randomized, Double-blind, Placebo-controlled Study to Assess the Efficacy, Pharmacodynamics, Pharmacokinetics, and Safety of Venglustat in Late-onset GM2

NCT04221451 · Status: TERMINATED · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 75

Last updated 2026-01-28

Study results available
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Summary

Primary Objectives:

Primary population (adult participants with late-onset GM2 gangliosidosis): To assess the efficacy and pharmacodynamics (PD) of daily oral dosing of venglustat when administered over a 104-week period

Secondary population (participants with juvenile/adolescent late-onset GM2 gangliosidosis, GM1 gangliosidosis, saposin C deficiency, sialidosis type 1 or juvenile/adult galactosialidosis): To assess PD response (plasma and CSF GL-1 biomarker and disease specific biomarkers) of venglustat when administered once daily over a 104-week period

Secondary Objectives:

Primary population:

* To assess the PD of daily oral dosing of venglustat and the effect of venglustat on selected performance test and scale over a 104-week period
* To determine the safety and tolerability of venglustat when administered orally once daily over a 104-week period
* To assess the pharmacokinetics (PK) of venglustat in plasma and cerebrospinal fluid (CSF)

Secondary population:

* To assess the effect of venglustat on selected performance tests and scale over a 104-week period
* To determine the safety and tolerability of venglustat when administered once daily over a 104-week period
* To assess the PK of venglustat in plasma and CSF
* To assess the acceptability and palatability of the venglustat tablet

Conditions

  • Tay-Sachs Disease
  • Sandhoff Disease

Interventions

DRUG

venglustat GZ402671

Pharmaceutical form: tablet Route of administration: oral

DRUG

placebo

Pharmaceutical form: tablet Route of administration: oral

Sponsors & Collaborators

  • Genzyme, a Sanofi Company

    lead INDUSTRY

Principal Investigators

  • Clinical Sciences & Operations · Sanofi

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
2 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2020-06-29
Primary Completion
2024-12-26
Completion
2024-12-26
FDA Drug
Yes

Countries

  • United States
  • Argentina
  • Brazil
  • Czechia
  • France
  • Germany
  • Italy
  • Japan
  • Portugal
  • Russia
  • Spain
  • Turkey (Türkiye)
  • United Kingdom

Study Locations

More Related Trials

Entities

Drugs

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04221451 on ClinicalTrials.gov