ERBB2 and breast cancer: CBX2 mRNA high expression was correlated to shorter RFS in BC patients with Luminal A (HR=1.74, p=1.3e-05) (Figure 4H) and Luminal B tumors (HR=1.37, p=0.042) (Figure 4I), but not in Basal-like tumors (HR=1.19, p=0.3) (Figure 4J) and HER-2 subtype tumors (HR=1.03, p=0.92) (Figure 4K).