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Acthar studied in FSGS patients undergoing renal transplantation to measure recurrence rateCan a medication help prevent kidney disease from returning after transplant?

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Key Takeaway
Review the 2026 results for Acthar's effect on FSGS recurrence post-transplant in a 15-patient study.

This prospective phase 3 study, completed in 2024 with results posted in March 2026, evaluated the use of Acthar in patients with focal segmental glomerulosclerosis (FSGS) undergoing renal transplantation. The study enrolled 15 renal transplant recipients whose primary native kidney disease was FSGS. The target enrollment was 20 patients, but actual enrollment was 15. The target population was patients with primary FSGS. All patients with FSGS were to receive maintenance immunosuppression with belatacept. The primary outcome was the rate of recurrence of FSGS as assessed by renal transplant biopsies and the rate of proteinuria. A secondary endpoint was renal function after transplantation. The study was conducted by the University of Colorado, Denver, starting in February 2019 with primary completion in June 2024. The abstract states that, based on current data, FSGS recurs in 23% of patients after renal transplantation, and therefore it was expected that at least 4 patients would develop recurrent FSGS. The abstract does not report the specific recurrence rate or renal function outcomes from this study, nor does it provide any safety data or p-values, hazard ratios, odds ratios, or confidence intervals. The abstract also does not state the duration of follow-up for enrolled patients or detail any study limitations.

Imagine finally getting a new kidney after living with a serious disease called FSGS, only to worry that the disease might attack your new organ. That's the reality for many transplant patients. This study focused on that exact fear. It followed 15 patients with FSGS who received a kidney transplant. The main goal was to see if giving them a medication called Acthar could change the rate at which FSGS came back. The disease's return is typically tracked in two ways: by checking a biopsy of the new kidney and by measuring protein in the urine, a sign of kidney damage. Based on existing data, the researchers expected about 23% of patients (which would be at least 4 people in this group) to see their FSGS return after the transplant. The study aimed to see if Acthar made a difference in that number. All patients also received standard anti-rejection medication. The study has finished, and the results are now available for review.

What this means for you:
A study tested if Acthar could prevent FSGS from returning after a kidney transplant.

Study Details

Study typePhase3
Sample sizen = 15
EvidenceLevel 2
Follow-up64.1 mo
PublishedMar 2026
View Original Abstract ↓
Status: COMPLETED | Phase: PHASE3 Condition(s): FSGS Intervention(s): Acthar (DRUG) This study will evaluate the use of Acthar in patients to undergo renal transplantation and will measure the rate of FSGS recurrence. Detailed: This is a prospective study enrolling renal transplant recipients with the primary native kidney disease of FSGS. Primary endpoint is rate of recurrence of FSGS as seen in renal transplant biopsies and in rate of proteinuria. Secondary endpoint is renal function after transplantation The target subject number is 20 patients and the target population is primary FSGS patients. By the current data, FSGS should recur in 23% of patients. Therefore, it would be expected that at least 4 patients will develop recurrent FSGS after renal transplantation. Screening will be performed by the Principal Investigator during the kidney transplant evaluation clinics and during the wait list kidney transplant evaluation clinic. All patients with FSGS will have maintenance immunosuppression with belatacept Primary Outcome(s): Rate of Recurrence of FSGS as Seen in Renal Transplant Biopsies Proteinuria; Rate of Recurrence of Proteinuria Enrollment: 15 (ACTUAL) Lead Sponsor: University of Colorado, Denver Start: 2019-02-01 | Primary Completion: 2024-06-06 Results posted: 2026-03-23
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