Study of Sparsentan in Patients With Primary Focal Segmental Glomerulosclerosis (FSGS) (DUPLEX)
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|ClinicalTrials.gov Identifier: NCT03493685|
Recruitment Status : Recruiting
First Posted : April 10, 2018
Last Update Posted : May 15, 2020
|Condition or disease||Intervention/treatment||Phase|
|Focal Segmental Glomerulosclerosis||Drug: sparsentan Drug: irbesartan||Phase 3|
This is a randomized, multicenter, double-blind, parallel, active-control study. Approximately 300 patients aged 8 to 75 years (inclusive) will be enrolled in the study. The study will be conducted in approximately 240 study centers, globally. The investigational drug (sparsentan) is a dual-acting angiotensin receptor blocker and endothelin receptor antagonist. The active control is irbesartan. Patients who meet eligibility criteria will require washout from renin-angiotensin-aldosterone system (RAAS) blockers, if applicable prior to their first dose of study drug.
Patients will be randomly assigned in a 1:1 ratio to receive either sparsentan or active control (irbesartan).
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||300 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||Double (Participant, Investigator)|
|Official Title:||A Randomized, Multicenter, Double-blind, Parallel, Active-control Study of the Effects of Sparsentan, a Dual Endothelin Receptor and Angiotensin Receptor Blocker, on Renal Outcomes in Patients With Primary FSGS|
|Actual Study Start Date :||March 29, 2018|
|Estimated Primary Completion Date :||June 2022|
|Estimated Study Completion Date :||December 2022|
Sparsentan will be administered as a single oral morning dose; an initial dose of 400 mg daily titrating up to a target dose of 800 mg, daily
target dose of 800 mg daily
Other Name: RE-021
Active Comparator: irbesartan
Irbesartan will be administered as a single oral morning dose; an initial dose of 150 mg daily titrating up to a target dose of 300 mg, daily
target dose of 300 mg daily
Other Name: Irbesartan Tablets USP
- Slope of estimated glomerular filtration rate (eGFR) [ Time Frame: Week 6 to Week 108 ]The slope of estimated glomerular filtration rate (eGFR) from Week 6 to Week 108.
- Proportion of patients achieving a UP/C ≤1.5 g/g and a >40% reduction [ Time Frame: Week 36 ]Proportion of patients achieving a UP/C ≤1.5 g/g and a >40% reduction from baseline in UP/C at Week 36
- Percentage Change in eGFR [ Time Frame: Week 108 ]Percentage change from 6 weeks post randomization at Week 108
- Percentage Change in eGFR from baseline [ Time Frame: Week 112 ]Percentage change in eGFR from baseline to 4 weeks post-cessation of treatment at Week 112
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03493685
|Contact: Retrophin Call Centerfirstname.lastname@example.org|
|Study Director:||Radko Komers, MD, PhD||Retrophin, Inc.|