colorectalcancer {SPIA} | R Documentation

## Results from a microarray expriment comparing colorectal cancer samples and normal tissue samples.

### Description

The `colorectal` dataset consists: an named vector `DE_Colorectal` , which represents the log2 fold changes of the genes chosen as differentially expressed between colorectal cancer and normal samples based on data from Hong et al, 2007, and the universe of all Entrez gene IDs available on the array, `ALL_Colorectal`. These two vectors were obtained starting from the `top` dataframe which is the output from the topTable function of the limma package using the RMA processed gene expression data downloaded from GEO (GSE4107). The microarray platform used was Affymetrix HGU-133PLUS2.0.

### Usage

    data(colorectalcancer)

### Source

Yi Hong and Kok Sun Ho and Kong Weng Eu and Peh Yean Cheah, A susceptibility gene set for early onset colorectal cancer that integrates diverse signaling pathways: implication for tumorigenesis, Clin Cancer Res, 2007, 13(4),1107-14.

[Package SPIA version 1.0.0 Index]