Derivation and validation of cutoffs for clinical use of cell cycle arrest biomarkers.

Derivation and validation of cutoffs for clinical use of cell cycle arrest biomarkers.
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DOI:
10.1093/ndt/gfu292
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发表时间:
2014-11
期刊:
Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association
影响因子:
--
通讯作者:
Sapphire Investigators
Sapphire Investigators
中科院分区:
其他
文献类型:
--
作者:
Hoste EA;McCullough PA;Kashani K;Chawla LS;Joannidis M;Shaw AD;Feldkamp T;Uettwiller-Geiger DL;McCarthy P;Shi J;Walker MG;Kellum JA;Sapphire Investigators

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急性肾损伤(阿基)仍然是一种致命的疾病。金属蛋白酶组织抑制剂(TIMP)-2和胰岛素样生长因子结合蛋白(IGFBP)7是最近发现的两种尿阿基生物标志物。我们现在报告的发展,和诊断准确性的两个临床临界值的测试使用这些标志物。我们基于预测肾脏疾病的灵敏度和特异性推导出截止值:使用来自先前发表的多中心队列(Sapphire)的数据,在12小时内改善全球结局2-3期阿基。接下来,我们在一项新的研究(Opal)中验证了这些临界值,该研究招募了来自美国六个地点的154名重症成年人。Sapphire组和Opal组分别有100例(14%)和27例(18%)受试者达到主要终点。Opal研究的结果复制了Sapphire的结果。在两项研究中,受试者检测值≤0.3与>0.3-2的相对风险(95% CI)分别为4.7(1.5-16)和4.4(2.5-8.7),或≤0.3与>2的相对风险(95% CI)分别为12(4.2-40)和18(10-37)。对于0.3临界值,两项研究的敏感性均为89%,特异性分别为50%和53%。对于2.0,敏感性为42%和44%,特异性为95%和90%。0.3或更大的尿[TIMP-2]·[IGFBP 7]值识别处于高风险的患者和处于阿基的最高风险的那些>2,并提供新的信息以支持临床决策。Clintrials.gov(蓝宝石)和NCT 01846884(蛋白石)。
Acute kidney injury (AKI) remains a deadly condition. Tissue inhibitor of metalloproteinases (TIMP)-2 and insulin-like growth factor binding protein (IGFBP)7 are two recently discovered urinary biomarkers for AKI. We now report on the development, and diagnostic accuracy of two clinical cutoffs for a test using these markers. We derived cutoffs based on sensitivity and specificity for prediction of Kidney Disease: Improving Global Outcomes Stages 2–3 AKI within 12 h using data from a previously published multicenter cohort (Sapphire). Next, we verified these cutoffs in a new study (Opal) enrolling 154 critically ill adults from six sites in the USA. One hundred subjects (14%) in Sapphire and 27 (18%) in Opal met the primary end point. The results of the Opal study replicated those of Sapphire. Relative risk (95% CI) in both studies for subjects testing at ≤0.3 versus >0.3–2 were 4.7 (1.5–16) and 4.4 (2.5–8.7), or 12 (4.2–40) and 18 (10–37) for ≤0.3 versus >2. For the 0.3 cutoff, sensitivity was 89% in both studies, and specificity 50 and 53%. For 2.0, sensitivity was 42 and 44%, and specificity 95 and 90%. Urinary [TIMP-2]•[IGFBP7] values of 0.3 or greater identify patients at high risk and those >2 at highest risk for AKI and provide new information to support clinical decision-making. Clintrials.gov # NCT01209169 (Sapphire) and NCT01846884 (Opal).
急性肾脏损伤的步枪标准与重症患者的医院死亡率有关:一项队列分析。
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