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. 2015 Nov 15;8(11):21981–21990.

Table 3.

Pathway activation in the context of molecular subtypes

Molecular subtype Number of positive samples (%)

Activation of ERBB/PI3K pathway Mismatch Repair system functioning TP53 mutated
PR+/ER+/HER2+ 73/127 (57.5%) 43/128 (33.6%) 78/129 (60.5%)
PR+/ER+/HER2- 29/222 (13.1%) 37/224 (16.5%) 50/224 (22.3%)
PR-/ER-/HER2+ 4/18 (22.2%) 6/18 (33.3%) 15/18 (83.3%)
PR-/ER-/HER2- 0/29 (0%) 7/29 (24.1%) 17/29 (58.6%)
P value (chi square) <0.00001 0.002 <0.000001