DCUN1D1 and central nervous system cancer: Defective cullin neddylation 1 domain‐containing 1/squamous cell carcinoma‐related oncogene (DCUN1D1/SCCRO) is a ring-finger domain ubiquitin E3 enzyme that is involved in the growth and metastasis of malignancies such as colorectal (66), glioma (67) and prostate cancers (68).