AP&T:呼吸中的挥发性有机化合物可作为检测晚期腺瘤和结直肠癌的非侵入性诊断生物标志物

2020-02-16 不详 MedSci原创

大肠癌(CRC)是世界第三大最常见的癌症。本项研究旨在评估呼吸性挥发性有机化合物(VOC)作为使用电子鼻检测CRC和前体病变的非侵入性生物标志物的疗效。

背景及目的
大肠癌(CRC)是世界第三大最常见的癌症。本项研究旨在评估呼吸性挥发性有机化合物(VOC)作为使用电子鼻检测CRC和前体病变的非侵入性生物标志物的疗效。

方法
在这项多中心研究中,研究人员纳入了没有炎症性肠病或恶性肿瘤的成人结肠镜检查患者进行呼吸分析。呼吸测试的三分之二被随机分配用于开发训练模型,用于预测其余患者的诊断(外部验证)。最后,所有数据都用于开发最终疾病模型,以进一步提高算法的区分能力。

结果
本项研究共收集了511个呼吸样本。由于呼气测试不足(n = 51),结肠镜检查不完全(n = 8)或结肠炎(n = 5)而排除了64名患者。分类是根据发现的最严重的病变进行的;CRC(n = 70),晚期腺瘤(AAs)(n = 117),非晚期腺瘤(n = 117),增生性息肉(n = 15),正常结肠镜检查(n = 125)。CRC和AA的训练模型的曲线下面积(AUC)为0.76和0.71,盲目验证的AUC分别为0.74和0.61。CRC和AA的最终模型产生的AUC分别为0.84(敏感性95%和特异性64%)和0.73(敏感性和特异性79%和59%)。

结论
这项研究表明,呼出的挥发性有机化合物可能会成为检测CRC和AA的非侵入性生物标志物。

原始出处:

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