Gene expression signatures for p53 mutation status in 250 breast cancer samples
Perturbations of the p53 pathway are associated with more aggressive and therapeutically refractory tumours. We preprocessed the data using Robust Multichip Analysis (RMA). Dataset has been truncated to the 1000 most informative genes (as selected by Wilcoxon test statistics) to simplify computation. The genes have been standardised to have zero mean and unit variance (i.e. z-scored).
A data frame with 250 observations on 1001 variables. The
first 1000 columns are numerical variables; the last column
code) is a factor with levels
code defines whether there was a mutation in the p53
sequence (code=case) or not (code=control).
Dr. Chris Holmes, c.holmes at stats dot. ox . ac .uk
Miller et al (2005, PubMed ID:16141321)
data(breastcancer) ## maybe str(breastcancer) ; plot(breastcancer) ...