Guo et al. described a prognostic signature for ACC containing 9 genes, including CCNB1 (cyclin B1), CDK1, TOP2A (topoisomerase IIα), CCNA2 (cyclin A2), CDKN3 (cyclin‐dependent kinase inhibitor 3), MAD2L1 (mitosis arrest‐deficient 2-like 1), RACGAP1 (rac GTPase activating protein 1), BUB1 (benzimidazole 1 homolog beta) and CCNB2 [10]. Here, CCNB2 is linked to adrenal cortex carcinoma.