Research Paper Volume 14, Issue 2 pp 747—769

Overexpression of chaperonin containing TCP1 subunit 7 has diagnostic and prognostic value for hepatocellular carcinoma

Xinghua Huang1,2, *, , Huaxiang Wang1,3, *, , Fengfeng Xu1,2, *, , Lizhi Lv1,2, , Ruling Wang3, , Bin Jiang3, , Tingting Liu2,4, , Huanzhang Hu1,2, , Yi Jiang1,2, ,

  • 1 The Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350025, PR China
  • 2 Department of Hepatobiliary Surgery, 900th Hospital of the Joint Logistics Team, Fuzhou, Fujian 350025, PR China
  • 3 Department of Hepatobiliary and Pancreatic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, PR China
  • 4 Graduate School of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350025, PR China
* Equal contribution

Received: September 7, 2021       Accepted: December 20, 2021       Published: January 24, 2022
How to Cite

Copyright: © 2022 Huang et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Chaperonin containing TCP1 subunit 7 (CCT7) regulates the expression of many tumor-related proteins. We investigated the diagnostic and prognostic value of CCT7 expression for hepatocellular carcinoma (HCC). In datasets from The Cancer Genome Atlas and the Gene Expression Omnibus, CCT7 mRNA levels were greater in HCC tissues than adjacent normal tissues, and these results were validated using immunohistochemistry. In patients with early-stage disease and low alpha-fetoprotein expression, CCT7 expression was still higher in HCC tissues than normal tissues. Receiver operating characteristic curve analyses indicated that CCT7 expression had better diagnostic value than alpha-fetoprotein for HCC patients with early-stage disease and low alpha-fetoprotein expression. The positive predictive value of CCT7 expression was higher than that of alpha-fetoprotein expression. Higher CCT7 mRNA and protein levels were independent risk factors for poorer overall and recurrence-free survival in HCC patients. Greater methylation of the CpG site cg19515186 was associated with better overall survival in HCC patients. Genes co-expressed with CCT7 were upregulated in HCC and associated with poorer overall survival. Gene Ontology, Kyoto Encyclopedia of Genes and Genomes and Gene Set Enrichment Analyses demonstrated that CCT7 expression correlated with spliceosome signaling. These findings demonstrate that CCT7 has diagnostic and prognostic value for HCC.


CCT7: Chaperonin containing TCP1, subunit 7; HCC: hepatocellular carcinoma; GSEA: gene set enrichment analysis; AFP: alpha-fetoprotein; GEO: Gene Expression Omnibus; GO: Gene Ontology; KEGG: Kyoto Encyclopedia of Genes and Genomes; GEPIA: Gene Expression Profiling Interactive Analysis; TCGA: The Cancer Genome Atlas; OS: overall survival; RFS: recurrence-free survival; DAVID: Database for Annotation, Visualization and Integrated Discovery; PPI: protein-protein interaction; ROC: receiver operating characteristic; AUC: area under the curve; PPV: positive predictive value; NPV: negative predictive value; TNM: Tumor-Node-Metastasis.