Correlation of <i>ECRG4</i> expression and histoclinical features (n = 1,387).

N, number of samples with data available; ILC, invasive lobular carcinoma; MED, medullary carcinoma; IDC, invasive ductal carcinoma; pN, pathological lymph node involvement; pT, pathological tumor size; IHC, immunohistochemistry; ER, estrogen receptor; PR, progesterone receptor; SBR, Scarff, Bloom and Richardson; SSP, single sample predictor [20]; pCR, pathological complete response to primary chemotherapy defined as disappearance of the invasive component of the primary tumor after treatment. HR, hazard ratio; 95CI,95% confidence interval.