In line with the RELA gene status, Western blotting analysis revealed lower p65 expression levels in SK-N-BE(2)c and LA-N-1 (p65/actin expression ratio: 0.2 and 0.5, respectively) and higher expression levels in GICAN (p65/actin expression ratio: 1.8) compared with other NB cells (Figure S1A). Here, RELA is linked to neuroblastoma.