Li et al. found that circ-CUX1, encoded by CUX1, is highly expressed in neuroblastoma and could bind to EWS RNA-binding protein 1 (EWSR1), thus promoting the interaction between EWSR1 and MYC-associated zinc finger protein (MAZ), leading to transactivation of MAZ and transcriptional alterations of its host gene CUX1 and other genes associated with tumor progression, thus promoting aerobic glycolysis and malignant progression of neuroblastoma [36]. Here, MAZ is linked to neuroblastoma.