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  • Title: Preformed donor-specific antibodies do not affect the 1-year allograft survival in living donor liver transplantation.
    Author: Kim H, Yi NJ, Song EY, Lee K, Lee KW, Lee HW, Ahn HY, Yoon KC, Hong SK, Suh KS.
    Journal: Clin Transplant; 2018 May; 32(5):e13244. PubMed ID: 29577436.
    Abstract:
    The effect of preformed donor-specific antibodies (DSAs) on liver transplantation (LT) remains unclear, especially in the field of living donor LT (LDLT). Herein, we evaluated the prevalence of preformed DSAs and their effect on graft outcome in LDLT in the first year following surgery. Using the Luminex® Single Antigen assay, we analyzed the preoperative sera of 61 adult LDLT recipients between 2014 and 2015. Clinical outcomes and pathologic findings including complement component 4d (C4d) expression in the first year after LT were retrospectively reviewed. Regardless of the class of DSA, DSAs with mean fluorescence intensity (MFI) ≥1000 were defined as positive and preformed DSA with MFI ≥5000 was defined as strongly positive. Fifteen patients (24.6%) had preformed DSAs, and 8 patients (13.1%) showed strongly positive preformed DSAs. Among 15 DSA positive patients, 2 (13.3%) showed persistent DSAs after LDLT. No de novo DSAs were noted in patients without preformed DSAs. Preformed DSAs were not related to graft dysfunction, laboratory values, or C4d expression or other pathologic findings in the first year of LDLT. In conclusion, preformed DSAs persisted during follow-up in 13.3% of cases and did not have adverse effect on histologic or clinical outcomes in the first year of LDLT.
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