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Updated: Feb 13, 2026
07:41
Performing Data Mining And Integrative Analysis Of Biomarker in Breast Cancer Using Multiple Publicly Accessible Databases
Published on: May 17, 2019
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A comprehensive function analysis of LMO2 in different breast cancer subtypes
Oncotarget
|March 7, 2018
Summary
The LMO2 gene has complex roles in breast cancer, acting differently in Luminal A and Her2 subtypes. Its expression can predict patient survival, suggesting LMO2 as a potential subtype-specific biomarker in precision medicine.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Breast cancer is a leading cause of death in women globally, with subtypes like Luminal A and Her2 exhibiting distinct characteristics.
- The LMO2 gene, known as a proto-oncogene in blood cancers, has unclear functions in solid tumors like breast cancer.
- The PAM50 subtyping system classifies breast cancer into Luminal A, Luminal B, Her2, and Basal subtypes, crucial for treatment decisions.
Purpose of the Study:
- To investigate the diverse functions and clinical significance of the LMO2 gene across different breast cancer subtypes.
- To explore the pathways associated with LMO2 expression in normal and malignant breast tissues.
- To evaluate the potential of LMO2 as a subtype-specific biomarker for breast cancer prognosis.
Main Methods:
- Analysis of the Cancer Genome Atlas (TCGA) breast cancer dataset.
- Identification of genes significantly correlated with LMO2 expression in normal and malignant samples.
- Enrichment analysis of cellular pathways associated with LMO2-correlated genes in different PAM50 subtypes.
Main Results:
- LMO2-correlated genes were enriched in divergent pathways, indicating complex LMO2 functions in breast tissue.
- High LMO2 expression correlated with shorter survival in Luminal A breast cancer but better survival in Her2 breast cancer.
- In Luminal A, LMO2-related genes were linked to cancer-promoting pathways (e.g., VEGF, stemness, cell cycle).
- In Her2 type, LMO2-related genes were associated with negative regulation of the ErbB pathway, suggesting an anti-oncogenic role.
Conclusions:
- LMO2 exhibits distinct, subtype-dependent functions in breast cancer, highlighting its functional complexity in solid tumors.
- LMO2 expression patterns and associated pathways differ significantly between Luminal A and Her2 subtypes.
- LMO2 may serve as a valuable PAM50 subtype-dependent biomarker for guiding breast cancer treatment in the precision medicine era.
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