CDKN2A and invasive breast carcinoma: Using TCGA expression data for invasive breast cancer, ANRIL and CDKN2A (p14ARF and p16INK4a combined) were positively correlated (Pearson correlation 0.588, Figure 4A) (38, 39), with a marginal positive correlation between ANRIL and p15INK4b (Pearson Correlation 0.39, Figure 4B).