Principal Components Analysis of Cross-study Normalized, Five-Cohort Dataset. PCA using 346-probeset signature derived from the combined index cohorts shows that ER- samples from the Ivshina et al., Rouzier et al., and Sotiriou et al. cohorts (blue symbols) associate with either the molecular apocrine (red symbols) or the non-molecular apocrine (green symbols) phenotypes from the index cohorts.
Sanga et al. BMC Medical Genomics 2009 2:59 doi:10.1186/1755-8794-2-59