Table 3. Statistical correlations between clinicopathological, immunohistochemical and molecular data for all tumours.

	Histological grade	Ductal form	Nuclear grade	Mitosis	Lymph node +	Vascular invasion
HR−	0.080a	0.024a	NS	0.091a	NS	NS
EGFR+	0.061	0.083	NS	0.013	0.088	NS
αIGF1R+	0.001	NS	0.07	0.004	NS	0.005
PTEN loss	0.065	NS	NS	NS	NS	0.047
PIK3CA mut	NS	NS	0.043	NS	NS	NS
pAkt+	NS	NS	NS	NS	NS	NS
pBad+	0.001	NS	0.008	0.002	NS	0.006
mTOR+	NS	NS	0.034	NS	0.12	NS
MAPK+	0.029a	NS	NS	NS	NS	NS
Ki67 >20%	0.087	NS	NS	0.021	NS	0.082
p53 >10%	NS	NS	0.009	0.076	NS	NS
p27+(nuclear)	NS	NS	NS	NS	NS	NS

Abbreviations: EGFR=epidermal growth factor 1-receptor; HR=hormonal receptors; IGF1R=insulin-like growth factor 1-receptor; MAPK=mitogen-activated protein kinase; NS=non-significant; PTEN=phosphatase and tensin homologue.

^aInverse relationship.