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Updated: Sep 22, 2025

Performing Data Mining And Integrative Analysis Of Biomarker in Breast Cancer Using Multiple Publicly Accessible Databases
Published on: May 17, 2019
Insights into breast cancer phenotying through molecular omics approaches and therapy response
Jose E Belizario1, Angela F Loggulo2
1Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, Avenida Lineu Prestes, 1524, São Paulo, CEP 05508-900, Brazil.
Abstract:
Breast cancer is the most common cancer in the world. Despite advances in early detection and understanding of the molecular bases of breast cancer biology, approximately 30% of all patients with early-stage breast cancer have metastatic disease. Breast cancers are comprised of molecularly distinct subtypes that respond differently to pathway-targeted therapies and neoadjuvant systemic therapy. However, no tumor response is observed in some cases and development of resistance is most commonly seen in patients with heterogeneous breast cancer subtype. To offer better treatment with increased efficacy and low toxicity of selecting therapies, new technologies that incorporate clinical and molecular characteristics of intratumoral heterogeneity have been investigated. This short review provides some examples of integrative omics approaches (genome, epigenome, transcriptome, immune profiling) and mathematical/computational analyses that provide mechanistic and clinically relevant insights into underlying differences in breast cancer subtypes and patients'responses to specific therapies.
Insights
This review explores how integrative omics and computational analyses reveal breast cancer subtypes and treatment responses. Understanding intratumoral heterogeneity is key to developing more effective, less toxic breast cancer therapies.
Area of Science:
- Oncology
- Genomics
- Bioinformatics
Background:
- Breast cancer is the most common malignancy globally, with ~30% of early-stage cases progressing to metastasis despite diagnostic advancements.
- Distinct molecular subtypes of breast cancer exhibit variable responses to therapies, and tumor heterogeneity often drives treatment resistance.
- Current therapeutic strategies require refinement to improve efficacy and minimize toxicity, particularly for heterogeneous tumors.
Purpose of the Study:
- To review integrative omics approaches and computational analyses for understanding breast cancer heterogeneity.
- To highlight how these methods provide insights into molecular differences across breast cancer subtypes.
- To demonstrate the clinical relevance of these approaches in predicting patient response to therapies.
Main Methods:
- Integrative omics approaches including genome, epigenome, transcriptome, and immune profiling.
- Application of mathematical and computational analyses to interpret complex biological data.
- Examination of intratumoral heterogeneity in the context of clinical and molecular characteristics.
Main Results:
- Integrative omics combined with computational analysis can elucidate mechanistic insights into breast cancer subtypes.
- These approaches offer a deeper understanding of the molecular drivers of treatment response and resistance.
- Identification of key differences in breast cancer subtypes and their implications for therapy selection.
Conclusions:
- Integrative omics and computational methods are crucial for dissecting breast cancer heterogeneity.
- These advanced analyses provide clinically relevant insights for personalized treatment strategies.
- Further investigation into these technologies promises to enhance breast cancer treatment efficacy and reduce toxicity.
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