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Chest:EBUS-TBNA与切除肺癌标本之间PD-L1免疫组化染色的比较

2018-08-01 xiangting MedSci原创

EBUS-TBNA的PD-L1阈值≥1%与切除肿瘤标本有强相关性。当PD-L1≥50%时,与切除肿瘤相比,EBUS-TBNA标本的敏感性和PPV显著降低。

晚期非小细胞肺癌NSCLC)中,来自支气管内超声引导的经支气管针吸活检(EBUS-TBNA)的小活检标本通常是唯一来自癌症组织可用于分析程序性死亡配体-1(PD-L1)表达的材料。这项研究目的是评估与其对应的手术切除肿瘤相比,EBUS-TBNA样本中PD-L1表达≥1%和≥50%的敏感性、特异性、阳性预测值(PPV)和阴性预测值(NPV)。

研究人员回顾性分析了2006年7月至2016年9月期间接受EBUS-TBNA并随后手术切除NSCLC的所有患者。收集了人口统计学信息和围手术期/手术数据。重新分析存档标本并评估PD-L1。使用两个单独的临界点来定义PD-L1染色阳性:≥1%和≥50%的肿瘤细胞阳性。将EBUS-TBNA吸出物与手术切除标本进行比较,以计算敏感性、特异性、PPV和NPV。

该研究纳入了61名患者。当PD-L1≥1%时,敏感性、特异性、PPV和NPV分别为72%、100%、100%和80%。当PD-L1≥50%时,敏感性、特异性、PPV和NPV分别为47%、93%、70%和84%。PD-L1≥1%和≥50%的一致率分别为87%和82%。

EBUS-TBNA的PD-L1阈值≥1%与切除肿瘤标本有强相关性。当PD-L1≥50%时,与切除肿瘤相比,EBUS-TBNA标本的敏感性和PPV显著降低。当使用≥50%作为阈值分析PD-L1表达时,EBUS-TBNA样本会将PD-L1状态进行错误分类。

原始出处:

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    2018-08-27 Smile2680
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    2019-07-02 cy0324
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    2019-04-07 xiangyuzhou971
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    2018-08-03 smartjoy
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