YY2 and neuroblastoma: In addition, YY2 overexpression in mouse neuroblastoma cell line N1E‐115 could significantly increase cellular mortality22; however, the expression level of two common apoptosis‐related genes, Bax and Bcl‐2, remains unchanged, reflecting that the cell death caused by overexpression of YY2 might be induced by non‐apoptotic pathway.22