However, in our collective of invasive ductal breast carcinoma the inverse correlation of LSD1 expression with lymph node status, histological grade and oestrogen receptor status may be due to a inhomogeneous and relatively small group size of invasive breast carcinoma specimens because this study was not constructed to validate LSD1 expression in invasive breast carcinoma as it was already analysed in a previous work by Lim et al. [13]. Here, KDM1A is linked to invasive breast carcinoma.