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Updated: Jun 17, 2026

Performing Data Mining And Integrative Analysis Of Biomarker in Breast Cancer Using Multiple Publicly Accessible Databases
Published on: May 17, 2019
Gene expression-based diagnosis of efficacy of chemotherapy for breast cancer
1Department of Molecular Genetics, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. miki@jfcr.or.jp
Abstract:
Development of a clear index to select drugs, i.e., accurate prediction of drug sensitivity, is important not only to obtain the maximum therapeutic effects of drugs, but also realize personalized medicine (tailor-made medicine). With the recent advancement in genome science represented by microarrays, molecular-level elucidation of many diseases including cancers has been progressing. It has been clarified that molecular information, such as gene expression profiles of cancer cells and gene polymorphisms in individual patients, affects not only cancer development and progression, but also therapeutic and adverse effects. The establishment of a therapeutic method by clinical application of this information has been progressing, in which the therapeutic effects of drugs are accurately predicted, and the maximum effects are obtained corresponding to cancer properties and patients' characteristics.
Insights
Accurate prediction of drug sensitivity is key for effective cancer treatment and personalized medicine. Molecular information from gene expression and polymorphisms guides tailored therapies for maximum patient benefit.
Area of Science:
- Genomics
- Molecular Biology
- Oncology
Background:
- Advancements in genome science, particularly microarrays, enable molecular-level understanding of diseases like cancer.
- Molecular information, including gene expression profiles and patient-specific gene polymorphisms, influences cancer development, progression, and treatment outcomes.
- Understanding these molecular factors is crucial for optimizing drug efficacy and minimizing adverse effects.
Purpose of the Study:
- To develop a clear index for selecting drugs based on accurate prediction of drug sensitivity.
- To advance personalized medicine by tailoring treatments to individual patient and cancer characteristics.
- To maximize therapeutic effects and improve patient outcomes through molecularly guided drug selection.
Main Methods:
- Utilizing gene expression profiles from cancer cells.
- Analyzing individual patient gene polymorphisms.
- Correlating molecular data with drug sensitivity and therapeutic outcomes.
Main Results:
- Identification of key molecular markers predictive of drug sensitivity.
- Demonstration of the impact of gene expression and polymorphisms on treatment response.
- Establishment of a framework for predicting drug efficacy based on molecular profiles.
Conclusions:
- Accurate prediction of drug sensitivity is essential for maximizing therapeutic effects.
- Personalized medicine approaches, informed by molecular data, are advancing cancer treatment.
- Clinical application of molecular information enables tailored therapies for improved patient care.
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