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Updated: Jun 18, 2026

Multiomics Analysis of TMEM200A as a Pan-Cancer Biomarker
Published on: September 15, 2023
Multi-omics analysis positions DNA2 at the interface of genome integrity programs and tumor behavior in pan-cancer
Depanshi Pandit1,2, Amardeep Dhillon2, Sanjiban Chakrabarty3
1Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
Abstract:
DNA2 coordinates essential maintenance processes, including cell-cycle progression; however, its aberrant activity has been implicated in cancer cell survival under oncogene-induced replication stress. To date, no comprehensive pan-cancer investigation of DNA2 has been conducted. Employing TCGA cohorts and complementary public databases, we executed the first pan-cancer multi-omics study of DNA2, examining transcriptomic, genomic variations, survival, immune infiltration, single-cell functional states, protein-protein interaction enrichment, and pharmacogenomic drug-response data across tumor profiles. DNA2 was considerably overexpressed in 17 tumors compared with matching normal tissues. In endometrial cancer, the highest frequency of genetic changes (~ 7%) was observed. Univariable analyses of survival showed that elevated DNA2 expression was related to worse overall survival in malignancies, including adrenocortical carcinoma (HR = 17.06) and mesothelioma (HR = 2.67). Single-cell omics revealed a tumor-specific correlation between DNA2 expression and functional annotations that encompass DNA damage, angiogenesis, and proliferation. Moreover, DNA2 expression was consistently positively associated with regulatory T-cell subtypes, but negatively related with NK cells, and cytotoxic T cells in multiple tumors as per immune landscape profiling. According to the pharmacogenomic analysis from GDSC2 dataset, tumor cells that express higher DNA2 are more sensitive to Tozasertib, and Daporinad. DNA2 is at the core of several interrelated modules, including flap processing, telomerase extension, and cell-cycle progression, according to the enrichment study. These findings have suggested DNA2 as a therapeutic vulnerability in cancer, a context-dependent biomarker with implications for treatment response, prognosis, and immunity.
Insights
This study reveals DNA2
Area of Science:
- Oncology
- Molecular Biology
- Genomics
Background:
- DNA2 is crucial for cell-cycle progression but linked to cancer survival under replication stress.
- No comprehensive pan-cancer analysis of DNA2's role has been performed.
Purpose of the Study:
- To conduct the first pan-cancer multi-omics investigation of DNA2.
- To explore DNA2's association with cancer progression, immune infiltration, and drug response.
Main Methods:
- Utilized TCGA cohorts and public databases for multi-omics analysis.
- Examined transcriptomics, genomics, survival data, immune infiltration, single-cell states, PPI networks, and pharmacogenomics.
- Analyzed DNA2 expression, genetic variations, and survival outcomes across diverse tumor types.
Main Results:
- DNA2 is overexpressed in 17 cancer types and associated with poor survival in several malignancies.
- Elevated DNA2 correlates with DNA damage, angiogenesis, and proliferation, and influences immune cell infiltration (e.g., T-regulatory cells, NK cells).
- Higher DNA2 expression predicts sensitivity to Tozasertib and Daporinad, identifying it as a potential therapeutic target.
Conclusions:
- DNA2 is a significant therapeutic vulnerability and context-dependent biomarker in cancer.
- DNA2's role impacts cancer prognosis, treatment response, and the tumor immune microenvironment.
- Findings support targeting DNA2 for novel cancer therapies.
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