Therefore, a combination of previous studies and our previous study started from CCT2 and cited the clinical data of various human cancers, genomic variants, mRNA expression, miRNA expression, methylation, and other data included in TCGA database as well as protein expression in different human tissues and organs included in the Human Protein Atlas (HPA) database in order to explore the function of the role CCT2 plays in various cancers. The gene discussed is CCT2; the disease is cancer.