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.
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.
Authors: Dinesh Kannabhiran; John Lee; Joseph E Schwartz; Rex Friedlander; Meredith Aull; Thangamani Muthukumar; Sean Campbell; David Epstein; Surya V Seshan; Sandip Kapur; Vijay K Sharma; Manikkam Suthanthiran; Darshana Dadhania Journal: Transplantation Date: 2015-06 Impact factor: 4.939
Authors: Jason M Zimmerer; Matthew W Basinger; Bryce A Ringwald; Mahmoud Abdel-Rasoul; Ronald P Pelletier; Amer Rajab; Ashraf El-Hinnawi; Hemant Parekh; Kenneth Washburn; Ginny L Bumgardner Journal: Transplantation Date: 2020-11 Impact factor: 5.385
Authors: Maria Cristina Ribeiro de Castro; Erick A Barbosa; Renata P Souza; Fabiana Agena; Patrícia S de Souza; Gabriella Maciel; Hélcio Rodrigues; Nicolas Panajotopoulos; Daísa S David; Flávio J de Paula; Elias David-Neto Journal: J Transplant Date: 2018-04-23
Authors: S Girerd; J Schikowski; N Girerd; K Duarte; H Busby; N Gambier; M Ladrière; M Kessler; L Frimat; A Aarnink Journal: BMC Nephrol Date: 2018-09-15 Impact factor: 2.388