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Patterns of gene mutations in bile duct cancers: is it time to overcome the anatomical classification?
HPB ( IF 2.9 ) Pub Date : 2019-05-20 , DOI: 10.1016/j.hpb.2019.04.002
Fabio Bagante 1 , Andrea Ruzzenente 1 , Simone Conci 1 , Borislav C Rusev 2 , Michele Simbolo 2 , Tommaso Campagnaro 1 , Timothy M Pawlik 3 , Claudio Luchini 2 , Calogero Iacono 1 , Aldo Scarpa 2 , Alfredo Guglielmi 1
Affiliation  

BACKGROUND Two recent studies based on multi-omics data analysis identified distinct subtypes of bile-duct cancers (BDC) with important implications in terms of disease classification and patients' treatment. METHODS Patients with mutations in KRAS, NRAS, TP53, and ARID1A genes were classified in KRAS/TP53 group while patients with mutations in IDH1-2, BAP1, and PBRM1 were classified in IDH1-2/BAP1/PBRM1 group. The aim of this study was to define long-term outcomes among patients stratified by patterns of genes mutated. RESULTS Among 105 patients who underwent surgical resection for BDCs, 71 (68%) patients were classified in two groups based on patterns of genes mutated. While in IDH1-2/BAP1/PBRM1 group there were 58%, 22%, and 10% of patients with intrahepatic-cholangiocarcinoma (ICC), perihilar-cholangiocarcinoma (PHCC), and gallbladder cancer (GBC), in KRAS/TP53 group there were 42%, 78%, and 90% of patients with ICC, PHCC, and GBC (p = 0.003), respectively. Patients in IDH1-2/BAP1/PBRM1 group had a 5-year OS of 40% compared with 13% for KRAS/TP53 group (p = 0.032). In a multivariable model adjusted for margins, lymph-node status, microvascular invasion, and tumor grade, patients in KRAS/TP53 group had a 2.1-fold increased risk of death compared with patients in IDH1-2/BAP1/PBRM1 group (p = 0.028). CONCLUSIONS Genetic data were able to overcome the clinical based staging system in predicting patients' prognosis.

中文翻译:

胆管癌基因突变模式:是时候克服解剖学分类了吗?

背景最近两项基于多组学数据分析的研究确定了胆管癌 (BDC) 的不同亚型,在疾病分类和患者治疗方面具有重要意义。方法 KRAS、NRAS、TP53、ARID1A基因突变患者分为KRAS/TP53组,IDH1-2、BAP1、PBRM1突变患者分为IDH1-2/BAP1/PBRM1组。本研究的目的是确定按基因突变模式分层的患者的长期结果。结果 在接受 BDC 手术切除的 105 名患者中,71 名 (68%) 患者根据基因突变模式分为两组。而在 IDH1-2/BAP1/PBRM1 组中,分别有 58%、22% 和 10% 的患者患有肝内胆管癌 (ICC)、肺门周围胆管癌 (PHCC)、和胆囊癌 (GBC),在 KRAS/TP53 组中,分别有 42%、78% 和 90% 的患者患有 ICC、PHCC 和 GBC (p = 0.003)。IDH1-2/BAP1/PBRM1 组患者的 5 年 OS 为 40%,而 KRAS/TP53 组为 13% (p = 0.032)。在对切缘、淋巴结状态、微血管侵犯和肿瘤分级进行调整的多变量模型中,与 IDH1-2/BAP1/PBRM1 组患者相比,KRAS/TP53 组患者的死亡风险增加了 2.1 倍(p = 0.028)。结论 遗传数据能够克服基于临床的分期系统预测患者预后。在对切缘、淋巴结状态、微血管侵犯和肿瘤分级进行调整的多变量模型中,与 IDH1-2/BAP1/PBRM1 组患者相比,KRAS/TP53 组患者的死亡风险增加了 2.1 倍(p = 0.028)。结论 遗传数据能够克服基于临床的分期系统预测患者预后。在对切缘、淋巴结状态、微血管侵犯和肿瘤分级进行调整的多变量模型中,与 IDH1-2/BAP1/PBRM1 组患者相比,KRAS/TP53 组患者的死亡风险增加了 2.1 倍(p = 0.028)。结论 遗传数据能够克服基于临床的分期系统预测患者预后。
更新日期:2019-05-20
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