PMID- 23478360 OWN - NLM STAT- MEDLINE DCOM- 20130719 LR - 20211021 IS - 1534-6080 (Electronic) IS - 0041-1337 (Linking) VI - 95 IP - 10 DP - 2013 May 27 TI - The impact of human leukocyte antigen mismatching on sensitization rates and subsequent retransplantation after first graft failure in pediatric renal transplant recipients. PG - 1218-24 LID - 10.1097/TP.0b013e318288ca14 [doi] AB - BACKGROUND: U.S. allocation policies currently place less emphasis on human leukocyte antigen (HLA) matching in pediatric kidney transplant candidates to minimize dialysis time. The impact this may have on pediatric recipients after graft failure has not been extensively examined. METHODS: Using the Scientific Registry of Transplant Recipients database, we examined HLA sensitization after graft loss and regraft survival of all pediatric primary kidney transplant recipients younger than 18 years transplanted between 1990 and 2008, stratified by HLA-DR mismatch (MM) of first and second kidney transplant. RESULTS: Of 11,916 pediatric primary kidney transplant recipients, 2704 were relisted after first graft failure. 1847 received a retransplants, and 857 remained on the waiting list. Mean % panel reactive antibody increased from 6% to 45% for retransplant and from 8% to 76% for those on the waiting list. The degree of sensitization and waiting time to retransplantation increased with DR MM at first kidney transplantation. Two DR MM statuses at first transplant were associated with a 20% reduction in the hazard of receiving a retransplant (hazard ratio, 0.80 for 2 vs. 0-1 DR MM; P<0.001). Five-year retransplant graft survival was associated with the number of HLA MM at first and second kidney transplant. Retransplant graft survival was similar in the circumstance of a 0-1 DR MM living donor following a deceased donor, and the converse. CONCLUSION: In pediatric recipients, increasing number of initial HLA-DR MMs is associated with HLA sensitization, longer waiting time, decreased rate of retransplant, and decreased regraft survival. Consideration of DR matching at first transplant may mitigate these risks. FAU - Gralla, Jane AU - Gralla J AD - Department of Pediatrics, University of Colorado Denver, Denver, CO, USA. Jane.Gralla@ucdenver.edu FAU - Tong, Suhong AU - Tong S FAU - Wiseman, Alexander C AU - Wiseman AC LA - eng GR - UL1 TR000154/TR/NCATS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - Transplantation JT - Transplantation JID - 0132144 RN - 0 (HLA-DR Antigens) SB - IM MH - Adolescent MH - Child MH - Child, Preschool MH - Female MH - Graft Survival MH - HLA-DR Antigens/*immunology MH - *Histocompatibility Testing MH - Humans MH - Infant MH - *Kidney Transplantation/adverse effects MH - Male MH - Reoperation MH - Waiting Lists EDAT- 2013/03/13 06:00 MHDA- 2013/07/20 06:00 CRDT- 2013/03/13 06:00 PHST- 2013/03/13 06:00 [entrez] PHST- 2013/03/13 06:00 [pubmed] PHST- 2013/07/20 06:00 [medline] AID - 10.1097/TP.0b013e318288ca14 [doi] PST - ppublish SO - Transplantation. 2013 May 27;95(10):1218-24. doi: 10.1097/TP.0b013e318288ca14.