PMID- 24879384 OWN - NLM STAT- MEDLINE DCOM- 20150727 LR - 20220408 IS - 1534-6080 (Electronic) IS - 0041-1337 (Linking) VI - 98 IP - 12 DP - 2014 Dec 27 TI - De novo donor-specific human leukocyte antigen antibodies early after kidney transplantation. PG - 1310-5 LID - 10.1097/TP.0000000000000216 [doi] AB - BACKGROUND: Our aim was to determine the incidence of de novo donor-specific human leukocyte antigen (HLA) antibody (dnDSA) during the first year after kidney transplantation and the impact of early dnDSA on acute rejection and protocol biopsy findings. METHODS: We selected all patients who received a kidney transplant at our center between July 2010 and March 2012. Single antigen bead assay was performed at 1, 4 and 12 months after transplantation. Only DSAs with a mean fluorescence intensity (MFI) of greater 999 were included. RESULTS: We included 245 kidney transplant recipients who did not have a DSA before transplantation. At 12 months, 8.2% of the patients developed dnDSA; 2.4% of them were to HLA class I and 6.5% to HLA class II. Of the 32 patients with a dnDSA at 1 or 4 months, only 8 (25%) persisted at 12 months. The risk of antibody-mediated rejection (AMR) was higher in the dnDSA group. For the dnDSA group with MFI of 3,000 or greater (compared with the group with MFI<3,000), the hazard ratio for AMR was 10.6 (95% confidence interval, 2.27-49.5). The cumulative incidence of AMR or mixed rejection at 1 year was 30% in the group with dnDSA MFI level of 3,000 or greater but only 4% for the group with dnDSA with MFI less than 3,000. On 1-year protocol biopsies, the dnDSA group showed more interstitial inflammation, tubulitis, and glomerulitis. CONCLUSION: We conclude that dnDSA occurring during the first posttransplantation year may be transient, and the risk of AMR is higher in patients with a dnDSA MFI level that is greater than 3,000. FAU - Heilman, Raymond L AU - Heilman RL AD - 1 Department of Medicine, Mayo Clinic, Phoenix, AZ. 2 Department of Pathology and Laboratory Medicine, Mayo Clinic, Phoenix, AZ. 3 Department of Surgery, Mayo Clinic, Phoenix, AZ. 4 Address correspondence to: Raymond L. Heilman, M.D., Department of Medicine, Mayo Clinic, 5777 East Mayo Blvd, Phoenix, AZ 85054. FAU - Nijim, Ala AU - Nijim A FAU - Desmarteau, Yvonne M AU - Desmarteau YM FAU - Khamash, Hasan AU - Khamash H FAU - Pando, Marcelo Jorge AU - Pando MJ FAU - Smith, Maxwell L AU - Smith ML FAU - Chakkera, Harini A AU - Chakkera HA FAU - Huskey, Janna AU - Huskey J FAU - Valdez, Riccardo AU - Valdez R FAU - Reddy, Kunam Sudhakar AU - Reddy KS LA - eng PT - Journal Article PL - United States TA - Transplantation JT - Transplantation JID - 0132144 RN - 0 (Antibodies) RN - 0 (HLA Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Histocompatibility Antigens Class II) SB - IM MH - Adult MH - Aged MH - Antibodies/immunology MH - Biopsy MH - Cohort Studies MH - Female MH - Graft Rejection/immunology MH - HLA Antigens/*immunology MH - Histocompatibility Antigens Class I/immunology MH - Histocompatibility Antigens Class II/immunology MH - Histocompatibility Testing MH - Humans MH - Kidney Failure, Chronic/*immunology/*surgery MH - Kidney Transplantation MH - Male MH - Middle Aged MH - Retrospective Studies MH - Time Factors EDAT- 2014/06/01 06:00 MHDA- 2015/07/28 06:00 CRDT- 2014/06/01 06:00 PHST- 2014/06/01 06:00 [entrez] PHST- 2014/06/01 06:00 [pubmed] PHST- 2015/07/28 06:00 [medline] AID - 10.1097/TP.0000000000000216 [doi] PST - ppublish SO - Transplantation. 2014 Dec 27;98(12):1310-5. doi: 10.1097/TP.0000000000000216.