Yokoyama et al. have shown that in retinoblastoma cells the DNA binding domain (DBD) of NR2E1 interacts with the AO domain of LSD1, while the ligand‐binding domain (LBD) of NR2E1 interacts with both the SWIRM and AO domains of LSD1.10 Here, KDM1A is linked to retinoblastoma.