SP141 was investigated for inhibitory effects on cell viability in a panel of neuroblastoma cells with different genetic backgrounds of p53: NB-1643 (p53 wild-type (WT)), SK-N-SH (p53 WT), NB-EBC1 (p53 WT), CHLA-255 (p53 WT), NGP (p53 WT), SK-N-AS (p53 mutation (MT)), LA1-55n (p53 null), and two multidrug-resistant neuroblastoma cells NB-1691 (p53 WT) [37] and SK-N-BE(2) (p53 MT) [38] (Table 1). Here, TP53 is linked to neuroblastoma.