KRT5 and breast carcinoma: Structural proteins reported to have increased expression in basal-like breast carcinomas include basal cytokeratins (CK5/6, CK14 and CK17) [1,13,44,46,47,55], vimentin [52,56,57,58], fascin [58,59,60], nestin [61,62,63] and moesin [64,65].