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基于U-P点划分的围膜胆管癌的病理和分子特征

Ying Xiao¹, Qijia Zhang¹, Canhong Xiang¹

¹From the Departments of Pathology (Xiao, Yang, Li, Yin), Liver ICU (Zhang), and Hepatopancreatobiliary Surgery (Xiang), Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China.

Archives of pathology & laboratory medicine

|August 1, 2024

概括

周围胆管癌 (PCC) 的U-P点分类表明区分临床病理学和基因组特征的能力有限. 国际癌症控制联盟 (UICC) 系统更好地反映了PCC的分子特异性.

科学领域:

肝胆道手术肝胆道手术
手术瘤学手术瘤学
基因组医学是基因组医学.

背景情况:

日本肝胆胰腺外科学会提出了使用U-P点作为边界对周围胆管癌 (PCC) 的分类.
这与国际癌症控制联盟 (UICC) 系统有所不同.

研究的目的:

评估U-P点分类是否改善了PCC的临床病理学和基因组差异化.
为了比较肝内PCC (IPCC) 和肝外PCC (EPCC) 的分子特性.

主要方法:

58个PCC病例使用U-P点划分为IPCC和EPCC组进行了分类.
进行了下一代测序,针对425个与癌症相关的基因.

主要成果:

与EPCC组相比,IPCC组的瘤大小明显更大 (P = .002) 和KRAS Q61突变频率更高 (P = .03).
在瘤突变负担或微卫星不稳定性方面没有发现显著差异.
在PCC和相邻的胆道癌之间观察到PIK3CA (P = .01) 和TP53 (P = .04) 突变率的显著差异.

结论:

根据临床病理学和基因组特征,U-P点划分的潜力有限,无法完善PCC的特征.
在证明PCC的分子特异性方面,UICC分类系统似乎更有效.

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