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Influence of organ quality on the observed association between deceased donor kidney procurement biopsy findings and graft survival
American Journal of Transplantation ( IF 8.8 ) Pub Date : 2022-08-10 , DOI: 10.1111/ajt.17167
S Ali Husain 1, 2 , Kristen L King 1, 2 , David C Cron 3, 4 , Krista L Lentine 5 , Joel T Adler 6 , Sumit Mohan 1, 2, 7
Affiliation  

Deceased donor kidney procurement biopsies findings are the most common reason for kidney discard. Retrospective studies have found inconsistent associations with post-transplant outcomes but may have been limited by selection bias because kidneys with advanced nephrosclerosis from high-risk donors are typically discarded. We conducted a retrospective cohort study of kidneys transplanted in the United States from 2015 to 2019 with complete biopsy data available, defining “suboptimal histology” as glomerulosclerosis ≥11%, IFTA ≥mild, and/or vascular disease ≥mild. We used time-to-event analyses to determine the association between suboptimal histology and death-censored graft failure after stratification by kidney donor profile index (KDPI) (≤35%, 36%–84%, ≥85%) and final creatinine (<1 mg/dl, 1–2 mg/dl, >2 mg/dl). Among 30 469 kidneys included, 36% had suboptimal histology. In adjusted analyses, suboptimal histology was associated with death-censored graft failure among kidneys with KDPI 36–84% (HR 1.22, 95% CI 1.09–1.36), but not KDPI≤35% (HR 1.24, 0.94–1.64) or ≥ 85% (HR 0.99, 0.81–1.22). Similarly, suboptimal histology was associated with death-censored graft failure among kidneys from donors with creatinine 1-2 mg/dl (HR 1.39, 95% CI 1.20–1.60) but not <1 mg/dl (HR 1.07, 0.93–1.23) or >2 mg/dl (HR 0.95, 0.75–1.20). The association of procurement histology with graft longevity among intermediate-quality kidneys that were likely to be both biopsied and transplanted suggests biopsies provide independent organ quality assessments.

中文翻译:

器官质量对已故供肾活检结果与移植物存活率之间观察到的关联的影响

已故捐献者肾脏采购活检结果是肾脏丢弃的最常见原因。回顾性研究发现与移植后结果的关联不一致,但可能受到选择偏倚的限制,因为来自高风险供体的患有晚期肾硬化的肾脏通常会被丢弃。我们对 2015 年至 2019 年在美国移植的肾脏进行了一项回顾性队列研究,并提供了完整的活检数据,将“次优组织学”定义为肾小球硬化≥11%、IFTA ≥轻度和/或血管疾病≥轻度。我们使用事件发生时间分析来确定次优组织学与死亡审查移植失败之间的关联,通过肾脏供体概况指数 (KDPI)(≤35%、36%–84%、≥85%)和最终肌酐分层后( <1 毫克/分升、1–2 毫克/分升、>2 毫克/分升)。在纳入的 30 469 个肾脏中,36% 的组织学不理想。在调整后的分析中,次优组织学与 KDPI 为 36-84%(HR 1.22,95% CI 1.09-1.36)但 KDPI≤35%(HR 1.24,0.94-1.64)或≥ 85% (HR 0.99, 0.81–1.22)。同样,次优组织学与来自肌酐 1-2 mg/dl(HR 1.39,95% CI 1.20-1.60)但不低于 1 mg/dl(HR 1.07,0.93-1.23)的供体肾脏的死亡审查移植失败相关或 >2 毫克/分升(HR 0.95、0.75–1.20)。在可能同时进行活检和移植的中等质量肾脏中,采购组织学与移植物寿命的关联表明活检提供了独立的器官质量评估。在 KDPI 为 36-84%(HR 1.22,95% CI 1.09-1.36)的肾脏中,次优组织学与死亡审查移植失败相关,但与 KDPI≤35%(HR 1.24,0.94-1.64)或≥85%(HR 0.99、0.81–1.22)。同样,次优组织学与来自肌酐 1-2 mg/dl(HR 1.39,95% CI 1.20-1.60)但不低于 1 mg/dl(HR 1.07,0.93-1.23)的供体肾脏的死亡审查移植失败相关或 >2 毫克/分升(HR 0.95、0.75–1.20)。在可能同时进行活检和移植的中等质量肾脏中,采购组织学与移植物寿命的关联表明活检提供了独立的器官质量评估。在 KDPI 为 36-84%(HR 1.22,95% CI 1.09-1.36)的肾脏中,次优组织学与死亡审查移植失败相关,但与 KDPI≤35%(HR 1.24,0.94-1.64)或≥85%(HR 0.99、0.81–1.22)。同样,次优组织学与来自肌酐 1-2 mg/dl(HR 1.39,95% CI 1.20-1.60)但不低于 1 mg/dl(HR 1.07,0.93-1.23)的供体肾脏的死亡审查移植失败相关或 >2 毫克/分升(HR 0.95、0.75–1.20)。在可能同时进行活检和移植的中等质量肾脏中,采购组织学与移植物寿命的关联表明活检提供了独立的器官质量评估。在肌酐为 1-2 mg/dl(HR 1.39,95% CI 1.20-1.60)但不低于 1 mg/dl(HR 1.07,0.93-1.23)或 > 2 毫克/分升(HR 0.95、0.75–1.20)。在可能同时进行活检和移植的中等质量肾脏中,采购组织学与移植物寿命的关联表明活检提供了独立的器官质量评估。在肌酐为 1-2 mg/dl(HR 1.39,95% CI 1.20-1.60)但不低于 1 mg/dl(HR 1.07,0.93-1.23)或 > 2 毫克/分升(HR 0.95、0.75–1.20)。在可能同时进行活检和移植的中等质量肾脏中,采购组织学与移植物寿命的关联表明活检提供了独立的器官质量评估。
更新日期:2022-08-10
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