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  • Title: Desensitization with the Use of an Antibody Removal-Free Protocol in ABO-Incompatible Kidney Transplant Recipients with a Low Anti-A/B Antibody Titer.
    Author: Nanmoku K, Shinzato T, Kubo T, Shimizu T, Kimura T, Yagisawa T.
    Journal: Transplant Proc; 2018 May; 50(4):982-986. PubMed ID: 29731097.
    Abstract:
    BACKGROUND: Desensitization for ABO-incompatible (ABOi) kidney transplantation mainly comprises removal of antibodies with the use of apheresis and suppression of antibody (Ab) production with the use of rituximab. This study aimed to estimate the outcomes of ABOi kidney transplantation with the use of an Ab removal-free protocol to avoid complications associated with apheresis. METHODS: A total of 32 de novo consecutive adults who underwent ABOi living-donor kidney transplantation were retrospectively evaluated. Our protocol for ABOi recipients was stratified and fixed according to the anti-A/B Ab titer at baseline before desensitization. Desensitization was performed before transplantation with 0-4 sessions of plasmapheresis or double-filtration plasmapheresis and 1-2 administrations of rituximab at 100 mg/body. Graft outcomes, anti-A/B Ab titer, and plasma fibrinogen level were compared between the Ab removal (n = 21) and Ab removal-free (n = 11) groups. RESULTS: Between the Ab removal and Ab removal-free groups, the graft loss rate (4.8% vs 0.0%; P = 1.0), acute rejection rate (19.0% vs 0.0%; P = .14), and serum creatinine level (1.74 vs 1.40 mg/dL, P = .53) were similar. The anti-A/B Ab titer was maintained at a low level until postoperative month 12 in both groups. The plasma fibrinogen level on the operation day was significantly lower in the Ab removal group than in the Ab removal-free group (163.4 vs 250.2 mg/dL; P < .001). CONCLUSIONS: Desensitization with the use of an antibody removal-free protocol for ABOi kidney transplant recipients with a low anti-A/B Ab titer can maintain excellent graft outcomes and avoid postoperative bleeding risk.
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