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Published on: December 9, 2015
Pharmacogenomics of breast cancer targeted therapy: focus on recent patents
1Department of Basic Medical Lessons Faculty of Health and Caring Professions Technological Educational Institute of Athens, Athens, Greece. nyiannak@teiath.gr
Abstract:
Adjuvant endocrine therapy as well as other forms of targeted therapy such as HER2 inhibitors and antiangiogenic agents reduce the risk of recurrence and improve survival among women with hormone receptor positive breast cancer. However, a significant percentage of women who receive targeted therapy as adjuvant or metastatic treatment do not benefit from this therapy, while a number of women who initially respond will eventually develop disease progression and relapse while on therapy. The observed variability in treatment response to targeted breast cancer treatment could be partly explained by pharmacogenomics. This paper reviews evidence on the role of pharmacogenomics of breast targeted therapy focusing on the clinical relevance of genetic variation. In particular, this article reviews the role of pharmacogenomics of tamoxifen, aromatase inhibitors, HER-2 inhibitors and anti-angiogenic agents. In addition, recent patents in the field are presented that provide promising steps in the field of personalized treatment of breast cancer, although future studies are needed for determining the clinical benefit of the proposed inventions. Finally, we present a testable hypothesis to aide the search for biologically meaningful genetic variation Specifically, we suggest the publication of negative results in the field of pharmacogenomics and pharmacoproteomics, will benefit future research in the field.
Insights
Pharmacogenomics can explain why some women with hormone receptor-positive breast cancer respond differently to targeted therapies like tamoxifen and HER2 inhibitors. Understanding genetic variations is key to personalized breast cancer treatment.
Area of Science:
- Oncology
- Pharmacogenomics
- Genetics
Background:
- Adjuvant endocrine and targeted therapies improve outcomes for hormone receptor-positive breast cancer.
- However, significant inter-individual variability exists in treatment response and resistance to targeted therapies.
- Pharmacogenomics offers a potential explanation for these observed differences in treatment efficacy.
Purpose of the Study:
- To review the role of pharmacogenomics in targeted breast cancer therapies.
- To focus on the clinical relevance of genetic variations influencing treatment response.
- To present recent patents and a hypothesis for future research in personalized breast cancer treatment.
Main Methods:
- Literature review of pharmacogenomics in breast cancer targeted therapy.
- Focus on genetic variations impacting tamoxifen, aromatase inhibitors, HER2 inhibitors, and anti-angiogenic agents.
- Review of recent patents and formulation of a testable hypothesis.
Main Results:
- Genetic variations play a role in the variable response to targeted breast cancer therapies.
- Pharmacogenomic data is crucial for understanding treatment efficacy and resistance.
- Recent patents show promise for personalized medicine, but clinical validation is needed.
Conclusions:
- Pharmacogenomics is essential for understanding and improving targeted breast cancer treatments.
- Further research, including the publication of negative results, is needed to advance personalized medicine.
- Identifying biologically meaningful genetic variations will optimize patient outcomes.
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