Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA193344 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Gene expression profiles of human hepatocellular carcinoma (training set 2)
| PRJNA194394 | ENA
Project description:Gene expression profiles of human hepatocellular carcinoma (validation set)
| PRJNA194395 | ENA
Project description:Gene Expression in Fixed Tissues and Outcome in Hepatocellular Carcinoma (Training Set, HCC)
| PRJNA108987 | ENA
Project description:Gene Expression in Fixed Tissues and Outcome in Hepatocellular Carcinoma (Training Set, Liver)
| PRJNA108985 | ENA
Project description:Background: It is a challenge to identify those patients who, after undergoing potentially curative treatments for hepatocellular carcinoma, are at greatest risk of 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, tissues. 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tissue was highly effective: samples from 90% of the patients yielded data of high quality, including samples that had been archived for more than 24 years.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 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 correlating with survival is present in liver tissue adjacent to the tumor in patients with hepatocellular carcinoma. This SuperSeries is composed of the following subset Series: GSE10140: Gene Expression in Fixed Tissues and Outcome in Hepatocellular Carcinoma (Training Set, Liver) GSE10141: Gene Expression in Fixed Tissues and Outcome in Hepatocellular Carcinoma (Training Set, HCC) GSE10142: Gene Expression in Fixed Tissues and Outcome in Hepatocellular Carcinoma (Validation Set) Keywords: Hepatocellular carcinoma, Expression array, Illumina, Signatures, Outcome prediction Training cohort: 80 tumor and 82 non-tumor liver tissues surgically resected from patients with hepatocellular carcinoma (HCC); Validation cohort: 225 non-tumor liver tissues surgically resected from patients with HCC. Clinical data has been withheld from GEO due to privacy concerns.
2010-05-20 | E-GEOD-10143 | biostudies-arrayexpress
Project description:Gene expression in human hepatocellular carcinoma
| PRJNA238313 | ENA
Project description:Gene-expression profiles of formalin-fixed, paraffin-embedded human hepatocellular carcinoma
| PRJNA129763 | ENA
Project description:Genomic analysis of Fibrolammellar Hepatocellular Carcinoma reveals an unique molecular profile [Training set]
| PRJNA247957 | ENA
Project description:Gene expression profiles from the hepatocellular carcinoma (HCC) tissues
| PRJNA148029 | ENA
Project description:Gene expression profiles of different subpopulations of hepatocellular carcinoma
| PRJNA136771 | ENA