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Characterizing HDAC Pathway Copy Number Variation in Pan-Cancer
Shuming Yang1, Shengzhi Xie2, Xinying Shi3
1Department of Oncology, Senior Department of Oncology, The Third Medical Center of PLA General Hospital, Beijing, China.
Pathology Oncology Research : POR
|June 30, 2022
Summary
Histone deacetylase (HDAC) pathway copy number variation (CNV) impacts cancer progression and immune response. Altered HDAC CNV is a prognostic risk factor across multiple cancers, influencing tumor and immune characteristics.
Area of Science:
- Oncology
- Genomics
- Immunology
Background:
- Histone deacetylase (HDAC) enzymes regulate gene expression critical for tumor development and immunotherapy.
- Understanding copy number variation (CNV) in HDAC pathways is essential for cancer research.
Purpose of the Study:
- To comprehensively characterize HDAC pathway copy number variation (CNV) across a pan-cancer cohort.
- To investigate the prognostic implications of HDAC pathway CNV in various cancer types.
Main Methods:
- Analysis of 10,678 tumor samples from 33 cancer types within The Cancer Genome Atlas (TCGA) database.
- Evaluation of HDAC pathway CNV status and its correlation with tumor characteristics and immune profiles.
Main Results:
- HDAC pathway CNV alterations were identified as significant prognostic risk factors in pan-cancer.
- CNV alterations correlated with tumor mutational burden, neoantigen burden, and microsatellite instability.
- Significant differences in immune markers (MHC-I, MHC-II, IFN-γ) and immune scores were observed between altered and wild-type groups.
Conclusions:
- HDAC pathway CNV plays a critical role in shaping the tumor microenvironment and immune landscape.
- HDAC pathway CNV alterations offer potential as biomarkers for immune prognosis in cancer patients.
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