Among cancers of the breast, expression profiling of miRNAs shows correlations between miRNA expression and receptor status for estrogen receptor (ER), progesterone receptor (PgR), and V-Erb-B2 avian erythroblastic leukemia viral oncogene homolog 2 (HER2/Nue) [5, 6]. The gene discussed is ERBB2; the disease is breast cancer.