We found that the percentage of N-Myc high expression (H-Score ≥ 5; n = 24) in NB tissues (n = 65) was only 36.9%, while the percentage of N-Myc low expression (H-Score < 5; n = 41) in NB tissues (n = 65) was 63.1% (Fig. 1a and c). This evidence concerns the gene MYCN and neuroblastoma.