Cited by 2Cancer-related molecular mechanisms researchHepatocellular Carcinoma Treatment and PrognosisFerroptosis and cancer prognosis

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A Novel and Robust Prognostic Model for Hepatocellular Carcinoma Based on Enhancer RNAs-Regulated Genes

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Abstract

Evidence has demonstrated that enhancer RNAs (eRNAs) play a vital role in the progression and prognosis of cancers, but few studies have focused on the prognostic ability of eRNA-regulated genes (eRGs) for hepatocellular carcinoma (HCC). Using gene expression profiles of HCC patients from the TCGA-LIHC and eRNA expression profiles from the enhancer RNA in cancers (eRic) data portal, we developed a novel and robust prognostic signature composed of 10 eRGs based on Lasso-penalized Cox regression analysis. According to the signature, HCC patients were stratified into high- and low-risk groups, which have been shown to have significant differences in tumor immune microenvironment, immune checkpoints, HLA-related genes, DNA damage repair-related genes, Gene-set variation analysis (GSVA), and the lower half-maximal inhibitory concentration (IC50) of Sorafenib. The prognostic nomogram combining the signature, age, and TNM stage had good predictive ability in the training set (TCGA-LIHC) with the concordance index (C-index) of 0.73 and the AUCs for 1-, 3-, and 5-year OS of 0.82, 0.77, 0.74, respectively. In external validation set (GSE14520), the nomogram also performed well with the C-index of 0.71 and the AUCs for 1-, 3-, and 5-year OS of 0.74, 0.77, 0.74, respectively. In addition, an important eRG (AKR1C3) was validated using two HCC cell lines (Huh7 and MHCC-LM3) in vitro, and the results demonstrated the overexpression of AKR1C3 is related to cell proliferation, migration, and invasion in HCC. Altogether, our eRGs signature and nomogram can predict prognosis accurately and conveniently, facilitate individualized treatment, and improve prognosis for HCC patients.

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  • Studies that evaluate robustness to various data distributions through external validation inherently address the generalizability of the model.

    “studies that evaluate the robustness to various data distributions through external validation inherently address the generalizability of the model19–22.”

    From A scoping review of robustness concepts for machine learning in healthcare (2025) · cites this paper as [22]

    Methods §2.2 says the authors used an external HCC dataset to assess the model’s predictive capability and generalization, and Discussion §4 links its external-validation performance to robustness. The paper does not report testing robustness across various data distributions; Discussion §4 also says a multicenter study is needed to further establish generalizability. Page numbers were not provided in our copy. (LLM, conf=0.82)

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Metadata

Authors
Zhang, W., Chen, K., Tian, W., Zhang, Q., Sun, L., Wang, Y., Liu, M., & Zhang, Q.
Affiliations
  • Harbin Medical University (CN)
  • University of Science and Technology of China (CN)
Corresponding author
  • Liu, Meina
  • Zhang, Qiuju
Venue
Frontiers in Oncology
Published
2022-05-12
Volume
12
Pages
849242-849242
ISSN
2234-943X (ISSN-L)
OpenAlex
W4280508191
Cited by
2
References
1
Citations by year
2025: 1 · 2023: 1
FWCI
0.21
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Oncology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • National Science and Technology Major Project (2016ZX08011005)
  • National Natural Science Foundation of China (82073666, 82003556)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer-related molecular mechanisms research
  • Health Sciences › Medicine › Hepatology › Hepatocellular Carcinoma Treatment and Prognosis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Ferroptosis and cancer prognosis
Keywords
hepatocellular carcinoma, enhancer RNA, prognostic signature, prognostic nomogram, risk stratification, tumor immune microenvironment, immune checkpoint, HLA genes, DNA repair, AKR1C3, cell proliferation, migration and invasion, TCGA-LIHC, ERIC

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