After pre-processing, the dataset ended up with 317,487 CpG sites over 19,296 genes for 59 independent normal samples and 187 tumor samples which contain 31 samples for the Basal-like subtype, 12 for the Her2 subtype, 99 for the LumA subtype and 45 for the LumB subtype. The gene discussed is ERBB2; the disease is neoplasm.