期刊
EBIOMEDICINE
卷 40, 期 -, 页码 457-470出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ebiom.2018.12.058
关键词
Hepatocellular carcinoma; Integrative analysis; Molecular classification; CTNNB1 mutation; Metabolic disease associated cancer; Immunogenic cancer; Hepatocellular carcinoma with intrahepatic metastasis; Multi-centric hepatocellular carcinoma
资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan [18K19575, 16H02670]
- Princess Takamatsu Cancer Research Fund
- P-DIRECT [JP15cm0106064]
- P-CREATE [JP17cm0106518, JP18cm0106540]
- Division of Infectious Disease Research, Research Program on Hepatitis from AMED (Japan Agency for Medical Research and Development) [JP18fk0210040]
- Grants-in-Aid for Scientific Research [16H02670, 18K19575] Funding Source: KAKEN
Background: Hepatocellular carcinoma (HCC) is a heterogeneous disease with various etiological factors, and ranks as the second leading cause of cancer-related mortality worldwide due to multi-focal recurrence. We herein identified three major subtypes of HCC by performing integrative analysis of two omics data sets, and clarified that this classification was closely correlated with clinicopathological factors, immune profiles and recurrence patterns. Methods: In the test study, 183 tumor specimens surgically resected from HCC patients were collected for unsupervised clustering analysis of gene expression signatures and comparative analysis of gene mutations. These results were validated by using genome, methylome and transcriptome data of 373 HCC patients provided from the Cancer Genome Atlas Network. In addition, omics data were obtained from pairs of primary and recurrent HCC. Findings: Comprehensive molecular evaluation of HCC by multi-platform analysis defined three major subtypes: (1) mitogenic and stem cell-like tumors with chromosomal instability; (2) CTNNB1-mutated tumors displaying immune suppression; and (3) metabolic disease-associated tumors, which included an immunogenic subgroup characterized by macrophage infiltration and favorable prognosis. Although genomic and epigenomic analysis explicitly distinguished between HCC with intrahepatic metastasis (IM) and multi-centric HCC (MC), the phenotypic similarity between the primary and recurrent tumors was not correlated to the IM/MC origin, but to the classification. Interpretation: Identification of these HCC subtypes provides further insights into patient stratification as well as presents opportunities for therapeutic development. (C) 2018 The Authors. Published by Elsevier B.V.
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