MYCN and neuroblastoma: Furthermore, in 192, 251, and 204 of the NB clinical samples analysed in the GSE126575, E-TABM-38, and GSE55248 arrays from the R2 database, BRD4 expression correlated positively with the expression of the NB tumour driver MYCN, indicating that high BRD4 expression was associated with the tumorigenesis and development of NB (r = 0.705, p = 3.93 × 10–30; r = 0.783, p = 3.69 × 10–53; r = 0.475, p = 7.14 × 10–13) (Fig. 1B).