colon: colon: Gene Expression in Different Tissues

In thoree/stat340: Data and functions for BIAS at NMBU

colon: Gene Expression in Different Tissues

Description

The colon data is a publicly available data set from a colon cancer study in 1999 and consists of gene expression levels (a measure of gene activity) for 1988 genes in different tissues. NOTE: The original data has 2000 genes, but 12 where discarded here due to very strange names.

Usage

colon

Format

A tibble with 62 observations (rows) and 1989 variables (columns).

• The first column, [,1] Tissue, is a factor with two levels and codes the disease status (40 tumor, 22 normal).

• Each other column corresponds to the expression level of a certain gene.

• The rows correspond to different tissues.

• The higher the value, the more active the gene is in a given tissue.

References

Alon, U. et al. (1999) Broad patterns of gene expression revealed by clustering analysis of tumor and normal colon tissues probed by oligonucleotide arrays. Proc Natl Acad Sci U S A 96(12), 6745–-6750.

Examples

# The dimensions of the tibble
dim(colon)

# Box plot of expressions levels for one gene
boxplot(Hsa.3004 ~ Tissue, data = colon)

thoree/stat340 documentation built on June 30, 2024, 4:04 p.m.