CHICAGO – Lupus nephritis recurrence rates in kidney transplant recipients declined over the past decade, compared with rates seen in earlier studies, according to a review of cases at the University of Tennessee Health Science Center (UTHSC).
Sharon Worcester/MDedge News
Dr. Debendra N. Pattanaik
The findings are likely related to improvements in posttransplant immunosuppressive regimens, and may have implications for the timing of transplant going forward, Debendra N. Pattanaik, MD, said at the annual meeting of the American College of Rheumatology.
The biopsy-proven recurrence rate in 38 transplant recipients who received standard immunosuppression with prednisone, tacrolimus, and mycophenolate mofetil was 11%, and graft loss or death occurred in 26% at a median follow-up of 1,230 days, said Dr. Pattanaik, a rheumatologist at UTHSC, Memphis.
Patients with recurrence showed a trend for increased risk for graft loss or death, compared with recipients without recurrence (hazard ratio = 3.14), he noted during a press briefing at the meeting.
Lupus nephritis is a severe complication occurring in more than half of all patients with systemic lupus erythematosus (SLE), and despite a great deal of progress over the years, 10%-30% develop end-stage renal disease and require dialysis and/or transplant, he said, noting that studies have shown that transplant recipients do better over time than do those who remain on dialysis.
“So renal transplant is an important modality of treatment for end-stage renal disease from lupus nephritis,” he added.
However, recurrence of lupus nephritis in the graft is a concern, he said.
In previous eras – prior to improvements in immunosuppressive regimens for transplant recipients – studies showed variable rates of lupus nephritis recurrence, with some reporting rates up to 50% depending on the patient populations and protocols, he noted.
The rates in recent years at UTHSC seemed lower than that, so he and his colleagues looked more closely at the outcomes.
Case patients included all those with end-stage renal disease secondary to lupus nephritis who were transplanted between 2006 and 2017 at the center. Medical records of all 38 were reviewed along with information from the United Network for Organ Sharing Network. The mean age of the patients at baseline was 42 years, 89% were women, 89% were African American, and previous time on dialysis was a median of 4 years. Most (80%) received hemodialysis, and nearly one-third (31%) received living donor transplantation, Dr. Pattanaik said.
The main difference in the past decade compared with those previous eras is the use of posttransplant immunosuppressive regimens consisting of tacrolimus and mycophenolate mofetil rather than cyclosporine and azathioprine in addition to prednisone, he explained.
Previous reports showing higher recurrence rates were from studies in which patients received cyclosporine and azathioprine as part of the posttransplant regimen, he said.
“Our next question is whether patients can be transplanted early,” he said, explaining that transplant is often delayed for many months or years until SLE is in remission, but if the new regimens are reducing recurrence risk, early transplant may be feasible.
Dr. Pattanaik reported having no disclosures.
SOURCE: Pattanaik D et al. Arthritis Rheumatol. 2018;70(Suppl 10): Abstract 711.