Department of Nephrology, Radboud University Medical Center, Nijmegen, the Netherlands.
Department of Nephrology, Radboud University Medical Center, Nijmegen, the Netherlands.
Am J Kidney Dis. 2017 Dec;70(6):770-777. doi: 10.1053/j.ajkd.2017.06.024. Epub 2017 Aug 16.
BACKGROUND: The development of complement inhibitors has greatly improved the outcome of patients with atypical hemolytic uremic syndrome (aHUS), making kidney transplantation a more feasible option. Although prophylactic eculizumab therapy may prevent recurrent disease after transplantation, its necessity for all transplant recipients is debated. STUDY DESIGN: A case series. SETTING & PARTICIPANTS: Patients with aHUS who underwent living donor kidney transplantation after 2011 at 2 university centers, prospectively followed up with a protocol of eculizumab therapy limited to only recipients with documented posttransplantation recurrent thrombotic microangiopathy. In addition, the protocol emphasized lower target level tacrolimus and aggressive treatment of high blood pressure. OUTCOMES: Recurrence of aHUS, kidney function, acute kidney injury. RESULTS: We describe 12 female and 5 male patients with a mean age of 47 years. 5 patients had lost a previous transplant due to aHUS recurrence. 16 patients carried a pathogenic or likely pathogenic variant in genes encoding complement factor H, C3, or membrane cofactor protein, giving a high risk for aHUS recurrence. Median follow-up after transplantation was 25 (range, 7-68) months. One patient had aHUS recurrence 68 days after transplantation, which was successfully treated with eculizumab. 3 patients were treated for rejection and 2 patients developed BK nephropathy. At the end of follow-up, median serum creatinine concentration was 106 (range, 67-175) μmol/L and proteinuria was negligible. LIMITATIONS: Small series and short duration of follow-up. CONCLUSIONS: Living donor kidney transplantation in aHUS without prophylactic eculizumab treatment appears feasible.
背景:补体抑制剂的发展极大地改善了非典型溶血尿毒综合征(aHUS)患者的预后,使肾移植成为更可行的选择。虽然预防性依库珠单抗治疗可能预防移植后疾病复发,但所有移植受者是否需要预防性治疗仍存在争议。
研究设计:病例系列研究。
设置和参与者:2011 年后在 2 个大学中心接受活体供肾移植的 aHUS 患者,前瞻性随访,依库珠单抗治疗方案仅限于有明确移植后复发性血栓性微血管病的受者。此外,该方案强调了较低的目标水平他克莫司和积极治疗高血压。
结局:aHUS 复发、肾功能、急性肾损伤。
结果:我们描述了 12 名女性和 5 名男性患者,平均年龄为 47 岁。5 名患者因 aHUS 复发而失去了之前的移植。16 名患者携带编码补体因子 H、C3 或膜辅助蛋白的基因的致病性或可能致病性变异,aHUS 复发风险较高。移植后中位随访时间为 25 个月(范围 7-68 个月)。1 例患者在移植后 68 天发生 aHUS 复发,用依库珠单抗成功治疗。3 例患者接受了排斥反应治疗,2 例患者发生了 BK 肾病。随访结束时,中位血清肌酐浓度为 106 μmol/L(范围 67-175 μmol/L),蛋白尿可忽略不计。
局限性:小系列和随访时间短。
结论:在没有预防性依库珠单抗治疗的情况下,活体供肾移植治疗 aHUS 似乎是可行的。
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