Fig. 2

Correlation plot. Correlation between the GEX signatures and clinicopathological variables. The clinicopathological variables are indicated in bold. The labels on the diagonal contain a variable descriptor where the variables are described as continuous (c), binary (b), or ordinal (o). Significance levels represent crude p values. Only abbreviated GEX signature names are shown. Complete names are found in the abbreviation list. ER estrogen receptor, GEX gene expression, HER2 human epidermal growth factor receptor 2, NHG Nottingham histological grade, PR progesterone receptor, TILs tumor-infiltrating lymphocytes, T1 tumor size ≤ 20 mm, T2 tumor size > 20 mm