Assessing the prognostic value of ZNF217 mRNA expression levels (RTQ-PCR) in the molecular classification of breast cancers, revealed it as more informative in luminal breast cancers (p = 0.006, univariate analysis for RFS; p= 0.028, univariate analysis for OS) than in HER2+ or triple negative subtypes (no significance) [51]. The gene discussed is ERBB2; the disease is breast cancer.