Status:

RECRUITING

Sparsentan in Posttransplant Immunoglobulin A Nephropathy or Focal Segmental Glomerulosclerosis

Lead Sponsor:

Travere Therapeutics, Inc.

Conditions:

Proteinuria

Immunoglobulin A (IgA) Nephropathy

Eligibility:

All Genders

18+ years

Phase:

PHASE4

Brief Summary

To evaluate the safety and efficacy of sparsentan tablets for the treatment of patients with proteinuria after kidney transplantation with once-daily dosing for 36 weeks.

Detailed Description

This is a 46-week, open-label, multicenter, single-group Phase 4 study to determine the safety and efficacy of sparsentan for the treatment of patients post kidney transplantation with IgAN or FSGS wi...

Eligibility Criteria

Inclusion

  • Willing and capable of giving signed informed consent which includes compliance with the requirements and restrictions listed in the ICF and in the protocol.
  • Male and female aged ≥18 years
  • Participants with a kidney transplant with biopsy-proven IgAN or FSGS histological pattern in the graft.
  • A period of ≥12 months since kidney transplantation.
  • UPCR ≥0.5 g/g and eGFR (CKD-EPI creatinine-based formula ≥30 mL/min/1.73 m2.
  • Participants who can become pregnant, must agree to the use of 1 highly reliable method of contraception from 7 days prior to the first dose of study intervention until 30 days after the last dose of study intervention.
  • Systolic BP ≤160 mmHg and ≥100 mmHg, and diastolic BP ≤100 mmHg and ≥60 mmHg at screening.
  • For participants on an ACEI and/or ARB, and/or sodium glucose cotransporter-2 (SGLT2) inhibitor, the dosing regimen(s) is stable for ≥6 weeks prior to screening.

Exclusion

  • Participant has multiorgan transplants (with the exception of pancreas and corneal transplants).
  • Immunosuppressive therapy (IST) regimen for kidney transplant or other systemic chronic ISTs including enteric budesonide that is not stable for \>6 weeks prior to Day 1. Exceptions include routine changes in the dose of CNIs to meet target level.
  • \<3 months after antirejection treatment and active rejection.
  • Active bacterial, fungal or viral infection and/or active treatment of infection including BK virus (BKV), cytomegalovirus (CMV), human immunodeficiency virus (HIV), Hepatitis B and C \<3 months prior to and during the screening period.
  • Current treatment for surgical complications.
  • History of heart failure (New York Heart Association \[NYHA\] Class II-IV).
  • Jaundice, hepatitis, or known hepatobiliary disease.
  • Malignancy within the past 2 years with the exception of adequately treated basal cell carcinoma or non-metastatic squamous cell carcinoma of the skin, with no evidence or recurrence.
  • History of alcohol or illicit drug use disorder (as defined in the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition).
  • History of serious side effects or allergic response to any angiotensin II antagonist or ERA.
  • Participant requires any of the prohibited concomitant medications.
  • Treatment with sparsentan \<12 weeks prior to screening.
  • Participant has participated in a study of another investigational product \<28 days prior to screening or plans to participate in such a study during the course of this study.
  • Hematocrit \<27%, hemoglobin \<90 g/L (9 g/dL), or potassium \>5.5 mmol/L (5.5 mEq/L).
  • The participant is pregnant, plans to become pregnant during the course of the study, or is breastfeeding.
  • The participant, in the opinion of the Investigator, is unable to adhere to the requirements of the study, including the ability to swallow the study IMP whole.
  • The participant, in the opinion of the Investigator, has a medical condition or abnormal clinically significant laboratory screening value not listed above that may interfere with the evaluation of sparsentan safety or activity.

Key Trial Info

Start Date :

October 7 2025

Trial Type :

INTERVENTIONAL

Allocation :

ESTIMATED

End Date :

May 1 2027

Estimated Enrollment :

20 Patients enrolled

Trial Details

Trial ID

NCT07219121

Start Date

October 7 2025

End Date

May 1 2027

Last Update

December 19 2025

Active Locations (8)

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Page 1 of 2 (8 locations)

1

University of Alabama at Birmingham

Birmingham, Alabama, United States, 35294

2

Cornell Medical Center

New York, New York, United States, 10065

3

University of North Carolina Chapel Hill

Mooresville, North Carolina, United States, 27560

4

Ohio State University

Columbus, Ohio, United States, 43210