The circRNA, CUT-like homeobox 1 (CUX1), encodes a 113 amino acid protein (p113), which interacts with Zuotin-related factor 1 (ZRF1) and results in higher production of fatty acids, mitochondrial complex I activity, and therefore, aggressiveness and tumorigenesis of neuroblastoma (NB) [130]. This evidence concerns the gene DNAJC2 and neuroblastoma.