borderline significancep = 0.059
In TCGA mass spectrometry data, the association of CDC42 protein expression and EGFR protein levels was validated (Spearman r = 0.25, p = 0.01); however, other associations were of either borderline significance (E-cadherin r = 0.19, p = 0.059, Ki67 r = 0.16, p = 0.099) or not significant (CK5/6 r = 0.003, p = 0.97).