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Sci Transl Med:血液检测识别肿瘤复发高风险人群

2016-07-08 Seven L 译 MedSci原创

一项由霍普金斯大学和墨尔本大学的研究人员进行的前瞻性研究结果表明,接受2期结肠癌切除术的而患者,可通过血液检测循环中肿瘤DNA,准确识别癌症复发高风险患者。如果在未来的研究中得到证实,这一测试可以帮助临床医生确定识别可能受益于辅助治疗的患者。霍普金斯大学Kimmel癌症中心的Bert Vogelstein博士和同事们对230例2期结肠癌切除术的患者进行了研究,收集了1046例可检测到微小残留病的血

一项由霍普金斯大学和墨尔本大学的研究人员进行的前瞻性研究结果表明,接受2期结肠癌切除术的而患者,可通过血液检测循环中肿瘤DNA,准确识别癌症复发高风险患者。

如果在未来的研究中得到证实,这一测试可以帮助临床医生确定识别可能受益于辅助治疗的患者。

霍普金斯大学Kimmel癌症中心的Bert Vogelstein博士和同事们对230例2期结肠癌切除术的患者进行了研究,收集了1046例可检测到微小残留病的血浆样品,使用大规模平行测序技术进行分析患者术后循环中肿瘤DNA(ctDNA)情况。参与者的中位年龄65岁;其中57%为男性。样本的收集时间为术后4-10周,接着每3个月收集一次,直到随访满2年,此外术后患者每半年进行一次CT扫描直到随访满2年。

最初研究者们还对原发肿瘤组织进行了基因测序,发现99.6%的标本都存在至少一个体细胞突变。

研究人员在20名患者的样本中检测到了ctDNA,其中80%的患者在随访的2年内复发。而164例血液检测阴性的患者,只有10%的经历癌症复发。

对样本ctDNA检测阳性的患者,6名接受辅助化疗,14名没有。在接受辅助化疗的6名者中,CT扫描发现3名癌症复发;14例未接受辅助化疗的患者中,11例癌症复发。ctDNA阴性的患者中14名经历了复发。

翰霍普金斯大学Kimmel癌症中心的肿瘤学教授Nickolas Papadopoulos博士说,这一发现表明,检测癌症患者血液循环中的肿瘤DNA,有利于识别复发高风险人群。

原始出处:


Tie J, et al. Circulating tumor DNA analysis detects minimal residual disease and predicts recurrence in patients with stage II colon cancer.Sci Transl Med. 2016;doi:10.1126/scitranslmed.aaf6219.

DNA-based blood test predicts risk for recurrent colon cancer.Healio.July 7, 2016


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    2017-06-07 bsmagic9140
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