Clin Cancer Res:基于多参数磁共振影像组学预测晚期鼻咽癌患者无进展生存期

2017-08-28 MedSci MedSci原创

鼻咽癌是亚洲特别是中国华南地区常见的恶性肿瘤。局部复发及远处转移是治疗失败的主要原因。因此提前预测鼻咽癌患者不良预后显得尤为重要,为临床提供有益指导。近期,张水兴教授带领他的团队探讨基于磁共振影像组学(Radiomics)预测晚期鼻咽癌(III-IVb期)患者无进展生存期(Progression-Free Survival,PFS)的可行性。相关研究成果刊登在肿瘤领域权威期刊《Clinical C

鼻咽癌是亚洲特别是中国华南地区常见的恶性肿瘤。局部复发及远处转移是治疗失败的主要原因。因此提前预测鼻咽癌患者不良预后显得尤为重要,为临床提供有益指导。近期,张水兴教授带领他的团队探讨基于磁共振影像组学(Radiomics)预测晚期鼻咽癌(III-IVb期)患者无进展生存期(Progression-Free Survival,PFS)的可行性。相关研究成果刊登在肿瘤领域权威期刊《Clinical Cancer Research》(2016年影响因子为9.619) 上。

本研究共纳入晚期鼻咽癌(III-IVb期)患者118例,随机分入训练集(n = 88例)及测试集(n = 30例)。收集患者临床资料包括年龄、性别、TNM分期、治疗前血红蛋白浓度、血小板计数、随访时间等。利用MRI轴位T2WI及T1WI增强图像共提取970个影像组学特征,其中包括一阶统计特征、外形,纹理及小波等。lasso回归方法用于筛选出与患者PFS最相关的组学特征,然后分别构建影像组学及临床列线图预测模型,使用校准曲线及一致性指数C-index评估模型精度。此外,还运用热图探讨定量组学特征与临床资料之间的关联性。

研究结果显示,基于T2WI及T1WI增强图像联合提取的特征其预测能力优于从单个序列图像提取特征的预测能力。在训练集上,包含影像积分(Radscore)及TNM分期的列线图其预测鼻咽癌患者PFS的效能明显优于传统TNM分期(C-index, 0.761 vs 0.514; p < 2.68 × 10-9)。 类似地,包含影像积分及临床资料的列线图其预测患者PFS的效能明显优于临床列线图(C-index, 0.776 vs 0.649; p < 1.60 × 10-7)。所有列线图的校准曲线均显示与实际PFS之间较好的吻合度。上述发现在验证集上也得到较好验证。热图显示所选组学特征与患者临床分期、T分期及N分期具有良好相关性。

研究结果表明,基于多参数磁共振影像组学能够显着提高传统TNM分期及临床数据预测晚期鼻咽癌患者无进展生存期的效能,为鼻咽癌精准医学提供了良好的契机,有望改善晚期鼻咽癌患者的治疗方式。

原始出处:

Zhang B, Tian J, Dong D, et al. Radiomics Features of Multiparametric MRI as Novel Prognostic Factors in Advanced Nasopharyngeal Carcinoma. Clin Cancer Res. 2017 Aug 1;23(15):4259-4269.

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    2018-07-25 1e145228m78(暂无匿称)

    学习了,谢谢作者分享!

    0

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    2017-08-29 往日如昨

    继续学习中谢谢

    0

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    2017-08-28 三生有幸9135

    学习一下谢谢分享

    0

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    2017-08-28 doctorJiangchao

    谢谢分享.

    0

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Oncotarget:DEPDC1在鼻咽癌细胞周期进程和动力学中扮演的角色。

含DEP结构域的蛋白质1 (DEPDC1) ,一种新发现的癌症和细胞周期相关基因,已被证实为膀胱癌治疗的新靶点。然而,DEPDC1在鼻咽癌中的相关功能和治疗潜力尚不清楚。研究者在前期研究中发现:DEPDC1在鼻咽癌组织中的表达,无论在mRNA还是蛋白质水平,都较正常或非肿瘤组织高。

“NIPT教父”卢煜明在鼻咽癌检测方面的进展登上《新英格兰医学杂志》

由于ctDNA在血液中实在太罕见,香港中文大学的卢煜明(Dennis Lo)教授将目标转到会引起鼻咽癌的Epstein-Barr的DNA上,在鼻咽癌筛查中进行尝试,提高了该疾病的早期检测和生存率。他领导的这项研究,8月10日发表在《新英格兰医学杂志》NEJM上。

NEJM:血浆EBV病毒分析用于早期鼻咽癌筛查

血浆EBV DNA检查是有效的早期鼻咽癌筛查方法,较传统方法确诊率高、病情发现更早、更利于患者的治疗和恢复

Oncotarget:鼻咽癌预防和早期诊断-生物信息学鉴定癌症差异表达基因

鼻咽癌是源自鼻咽上皮的转移性恶性肿瘤,是我国高发恶性肿瘤之一,发病率为耳鼻咽喉恶性肿瘤之首。常见临床症状为鼻塞、涕中带血、耳闷堵感、听力下降、复视及头痛等。早期鼻咽癌患者缺乏症状或具有非特异性症状显著降低了诊断和预测鼻咽癌发展的准确性。