Three-year outcomes from BENEFIT-EXT: a phase III study of belatacept versus cyclosporine in recipients of extended criteria donor kidneys

Am J Transplant. 2012 Mar;12(3):630-9. doi: 10.1111/j.1600-6143.2011.03914.x. Epub 2012 Feb 2.


Recipients of extended-criteria donor (ECD) kidneys have poorer long-term outcomes compared to standard-criteria donor kidney recipients. We report 3-year outcomes from a randomized, phase III study in recipients of de novo ECD kidneys (n = 543) assigned (1:1:1) to either a more intensive (MI) or less intensive (LI) belatacept regimen, or cyclosporine. Three hundred twenty-three patients completed treatment by year 3. Patient survival with a functioning graft was comparable between groups (80% in MI, 82% in LI, 80% in cyclosporine). Mean calculated GFR (cGFR) was 11 mL/min higher in belatacept-treated versus cyclosporine-treated patients (42.7 in MI, 42.2 in LI, 31.5 mL/min in cyclosporine). More cyclosporine-treated patients (44%) progressed to GFR <30 mL/min (chronic kidney disease [CKD] stage 4/5) than belatacept-treated patients (27-30%). Acute rejection rates were similar between groups. Posttransplant lymphoproliferative disorder (PTLD) occurrence was higher in belatacept-treated patients (two in MI, three in LI), most of which occurred during the first 18 months; four additional cases (3 in LI, 1 in cyclosporine) occurred after 3 years. Tuberculosis was reported in two MI, four LI and no cyclosporine patients. In conclusion, at 3 years after transplantation, immunosuppression with belatacept resulted in similar patient survival, graft survival and acute rejection, with better renal function compared with cyclosporine. As previously reported, PTLD and tuberculosis were the principal safety findings associated with belatacept in this study population.

Trial registration: NCT00114777.

Publication types

  • Clinical Trial, Phase III
  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Abatacept
  • Adult
  • Cyclosporine / therapeutic use
  • Female
  • Follow-Up Studies
  • Glomerular Filtration Rate
  • Graft Rejection / prevention & control*
  • Graft Survival
  • Humans
  • Immunoconjugates / therapeutic use*
  • Immunosuppressive Agents / therapeutic use*
  • Kidney Failure, Chronic / complications
  • Kidney Failure, Chronic / surgery*
  • Kidney Function Tests
  • Kidney Transplantation*
  • Lymphoproliferative Disorders / chemically induced
  • Male
  • Middle Aged
  • Postoperative Complications*
  • Prognosis
  • Risk Factors
  • Survival Rate


  • Immunoconjugates
  • Immunosuppressive Agents
  • Abatacept
  • Cyclosporine

Associated data