Human Gene Set: HOSHIDA_LIVER_CANCER_LATE_RECURRENCE_UP


Standard name HOSHIDA_LIVER_CANCER_LATE_RECURRENCE_UP
Systematic name M6176
Brief description Genes whose expression correlated with higher risk of late recurrence of hepatocellular carcinoma (HCC).
Full description or abstract BACKGROUND: It is a challenge to identify patients who, after undergoing potentially curative treatment for hepatocellular carcinoma, are at greatest risk for recurrence. Such high-risk patients could receive novel interventional measures. An obstacle to the development of genome-based predictors of outcome in patients with hepatocellular carcinoma has been the lack of a means to carry out genomewide expression profiling of fixed, as opposed to frozen, tissue. METHODS: We aimed to demonstrate the feasibility of gene-expression profiling of more than 6000 human genes in formalin-fixed, paraffin-embedded tissues. We applied the method to tissues from 307 patients with hepatocellular carcinoma, from four series of patients, to discover and validate a gene-expression signature associated with survival. RESULTS: The expression-profiling method for formalin-fixed, paraffin-embedded tissue was highly effective: samples from 90% of the patients yielded data of high quality, including samples that had been archived for more than 24 years. Gene-expression profiles of tumor tissue failed to yield a significant association with survival. In contrast, profiles of the surrounding nontumoral liver tissue were highly correlated with survival in a training set of tissue samples from 82 Japanese patients, and the signature was validated in tissues from an independent group of 225 patients from the United States and Europe (P=0.04). CONCLUSIONS: We have demonstrated the feasibility of genomewide expression profiling of formalin-fixed, paraffin-embedded tissues and have shown that a reproducible gene-expression signature correlated with survival is present in liver tissue adjacent to the tumor in patients with hepatocellular carcinoma.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 18923165   Authors: Hoshida Y,Villanueva A,Kobayashi M,Peix J,Chiang DY,Camargo A,Gupta S,Moore J,Wrobel MJ,Lerner J,Reich M,Chan JA,Glickman JN,Ikeda K,Hashimoto M,Watanabe G,Daidone MG,Roayaie S,Schwartz M,Thung S,Salvesen HB,Gabriel S,Mazzaferro V,Bruix J,Friedman SL,Kumada H,Llovet JM,Golub TR
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Source species Homo sapiens
Contributed by Yujin Hoshida (Broad Institute)
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identifier namespace		 HUMAN_GENE_SYMBOL
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Version history 3.0: First introduced

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