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针对 50 多种癌症的新血液检测“可能改变结果”
11 days ago
7
一款革命性血液检测能提前捕捉癌症信号,准确率超60%,或将改写早期诊断规则。
Galleri血液测试能筛查50多种癌症,目前正在NHS进行试验。它通过检测癌细胞脱落的DNA,在症状出现前发现疾病“指纹”。Pathfinder 2试验对2.3万名无症状美加志愿者进行了一年以上的跟踪,结果显示:61.6%的“癌症信号”阳性者最终确诊,同时测试排除未患癌的准确率达99.6%。
该技术由美国Grail公司开发,不仅能以92%的准确率定位癌变部位,节省后续检查成本,其检测到的癌症数量更是“常规筛查的七倍”。Grail总裁哈帕尔·库马尔爵士称,模型显示50岁以上人群每年接受该检测,可有效应对癌症高发期。《BMJ Open》研究指出,年度检测或使晚期诊断减少49%,死亡风险降低21%。
巴兹癌症研究所所长罗森菲尔德教授评价结果“令人印象深刻”,但学界仍有保留意见。癌症研究所特恩布尔教授强调需验证其对死亡率的影响,牛津大学舒赫教授则指出测试假阳性率接近50%,“仅略优于抛硬币”。NHS将于明年公布更大规模试验数据,进一步验证其普适性。
Edited by Kun Liang
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