KRT14 and neoplasm: Immunohistochemical profiling and TNC-AD1/AD2 status was known in 132 cases (59 women aged ≤40 years and 73 women aged >40 years) for basal phenotype 1 defined as triple-negative tumours, and in 73 cases (44 women aged ≤40 years and 29 women aged >40 years) for basal phenotype 2 defined as CK5/6-positive and/or CK14-positive tumours.