首页|应用ROC曲线评价肿瘤标记物联合检测对常见癌症的诊断效果

应用ROC曲线评价肿瘤标记物联合检测对常见癌症的诊断效果

Evaluation of the Diagnostic Effects in the Common Cancers Based on the Combined Detection of Tumor markers with ROC curve

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目的:分析癌症患者肿瘤标记物浓度水平和诊断价值,并应用受试者工作特性(ROC)曲线确定肿瘤标记物联合检测的诊断阈值,评价诊断效果。方法:采集90例癌症患者和40例健康体检者空腹血,检测甲胎蛋白(AFP)、糖类抗原125(CA125)、糖类抗原19-9(CA19-9)、糖类抗原72-4(CA72-4)、癌胚抗原(CEA)、细胞角蛋白19(CYFRA21-1)、铁蛋白(FER)、神经元特异烯醇化酶(NSE)的血清水平,选取两组中具有非常显著的统计学意义差异(P<0.01)的项目应用SPSS19.0软件绘制ROC曲线,确定联合检测的诊断阈值,通过ROC曲线下面积(AUC)来评价肿瘤标志物联合检测的诊断效果。结果:AFP、CA125、CA72-4、CEA、CYFRA21-1高于正常对照组(P<0.01),以大于正常对照组中值为阳性条件绘制ROC曲线,AUC=0.80,当诊断阈值为阳性数2.5时,敏感度为65.6%,特异性为82.5%,均较高。结论:癌症患者伴有肿瘤标志物指标的不同程度的变化,AFP、CA125、CA72-4、CEA、CYFRA21-1联合检测可能提高常见癌症的诊断效果。
To analyze the levels and diagnostic value of detecting indicators of tumor markers test in cancer patients, the diagnostic cutoff value of the combined detection of tumor markers was confirmed with ROC curve , the diagnostic effect in the common cancers based on the combined detection was evaluated. Methods: We col ected the fasting blood of 90 cases cancer patients and 40 cases people conducted health examination. AFP, CA125, CA19-9, CA72-4, CEA, CYFRA21-1, FER, NSE were detected by Roche E411 electrochemical immunodetection analyzer with intravenous serum. ROC curve were drawn with the selected indicators with a very significant statistical difference (P<0.01) in the two groups by SPSS 19.0 software. The diagnostic cutoff value of the combined detection of tumor markers was confirmed with ROC curve and the diagnostic effects of indicators were evaluated with AUC.Results:The levels of AFP, CA125, CA72-4, CEA, CYFRA21-1 in cancer group were more than those in the normal control group (P<0.01).With the corresponding medians of the normal control group as reference, combined detection of AFP, CA125, CA72-4, CEA, CYFRA21-1, AUC was 0.80. When the cutoff value was 2.5 positive items, the sensitivity was 65.6% and the specificity was 82.5% , respectively in a higher level.Conclusion: There were variations in indicators of tumor markers test in cancer patients to different extents. It is possible that the combined detection with tumor markers indicators of AFP, CA125, CA72-4, CEA, CYFRA21-1, could improve the diagnostic effects in the common cancer.

CancerTumor markersROC curveEarly diagnosis

刘日旭、刘希龙、王亚男

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大连大学附属新华医院检验科 116021

癌症 肿瘤标志物 ROC曲线 早期诊断

2014

中外健康文摘
中国中医药报社

中外健康文摘

影响因子:0.016
ISSN:1672-5085
年,卷(期):2014.(9)
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