The latter had high expression of tumor basal markers including CDH3 (Cadherin-3), CD44 (CD44 antigen), KRT5 (Keratin, type II cytoskeletal 5), EGFR and KRT6 (Keratin, type II cytoskeletal 6) present in 4 of 5 of the Ba/Sq-type tumors. Here, KRT5 is linked to neoplasm.