LTS15823 (long-term extension of the EFC15392 study) was stopped after protocol specified interim analysis for futility of the parent EFC15392 study met the prespecified stopping rule based on the primary outcome measure.
STAGED-PKD-EXT
Multicenter, Open-label, Extension Study to Characterize the Long-term Efficacy and Safety of Early Versus Delayed Treatment With Venglustat (GZ/SAR402671) in Patients at Risk of Rapidly Progressive Autosomal Dominant Polycystic Kidney Disease (ADPKD)
Sponsor study identifier
Secondary identifiers
EUDRACT_NUMBER
OTHER · UTN
interventional
24
8 countries
11
Study Start
February 9, 2021
Actual (reported)Primary Completion
July 13, 2021
Actual (reported)Study Completion
July 13, 2021
Actual (reported)Primary Objective:
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
July 13, 2021
Actual (reported)Click on a node to explore related trials.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
January 8, 2021
Actual (reported)January 12, 2021
Actual (reported)February 9, 2021
Actual (reported)July 13, 2021
Actual (reported)July 13, 2021
Actual (reported)October 6, 2022
Actual (reported)Percent Change in Total Kidney Volume (TKV)
Total kidney volume is a measure of disease progression in the ADPKD participants. Study LTS15823 was terminated prematurely by the Sponsor following a decision to terminate the parent study EFC15392 (NCT03523728). Study EFC15392 was terminated based on the results of the planned prespecified futility analysis performed for this study. Termination decision was due to a lack of efficacy in the ADPKD population and not linked to safety findings with venglustat. Due to the early termination of study LTS15823 and low enrollment numbers, efficacy analysis was not performed.
From the EFC15392 study Baseline to 24 months of open-label extension study LTS15823
Change From the Baseline in Estimated Glomerular Filtration Rate (eGFR) as Assessed by Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI)
From the EFC15392 study Baseline to 24 months of open-label extension study LTS15823
Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
From the first administration of the IMP in LTS15823 study up to the last IMP administration in LTS15823 study + 30 days (i.e., up to approximately 20 weeks)
Change From Baseline in Lens Clarity During the Open-label Extension Treatment-emergent Period of LTS15823 Study
Baseline (EFC15392 study Baseline); from first administration of IMP up to last administration of IMP of open-label extension study LTS15823 + 30 days (i.e., up to approximately 20 weeks), in comparison to the EFC15392 study Baseline
Effect on Mood With Change From Baseline in Beck Depression Inventory (BDI-II) Score During the Open-label Extension Treatment-emergent Period of LTS15823 Study
Baseline (EFC15392 study Baseline); from first IMP administration up to 3 months in study LTS15823, in comparison to the EFC15392 study Baseline
Participants were to be treated with venglustat 15 milligrams once daily orally for 24 months or until venglustat was commercially available, whichever came first.
Investigational Site Number :8400019
Morgantown, West Virginia, 26506-9180, United States
Investigational Site Number :0360001
Westmead, New South Wales, 2145, Australia
Investigational Site Number :0560002
Leuven, 3000, Belgium
Investigational Site Number :2760001
Berlin, 10117, Germany
Investigational Site Number :3920001
Sapporo, Hokkaido, 060-8648, Japan
Investigational Site Number :3920007
Osaka, Osaka, 545-8586, Japan
Investigational Site Number :3920002
Bunkyo-ku, Tokyo, 113-8431, Japan
The study was terminated prematurely by the Sponsor following a decision to terminate the parent study EFC15392. Termination decision was due to lack of efficacy in ADPKD population and not linked to safety findings with venglustat.
Clinical Sciences & Operations
Sanofi
24 participants (actual enrollment reported by the registry).
First Submitted
January 8, 2021
First Posted
January 12, 2021
Study Start
February 9, 2021
Actual (reported)Contact the study team to confirm eligibility.
Investigational Site Number :3920004
Shinjuku-ku, Tokyo, 162-8666, Japan
Investigational Site Number :5280002
Nijmegen, 6525GA, Netherlands
Investigational Site Number :4100002
Seoul, Seoul-teukbyeolsi, 07061, South Korea
Investigational Site Number :7240003
Barcelona, Barcelona [Barcelona], 08003, Spain
Primary Completion
July 13, 2021
Actual (reported)Study Completion
July 13, 2021
Actual (reported)Last Updated
September 17, 2025
Results First Posted
October 6, 2022
Record last verified: 2025-09
Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, blank case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of trial participants. Further details on Sanofi's data sharing criteria, eligible studies, and process for requesting access can be found at: https://vivli.org
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Source: ClinicalTrials.gov.
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