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Updated: Jun 16, 2026

Studying Triple Negative Breast Cancer Using Orthotopic Breast Cancer Model
Published on: March 20, 2020
Triple-negative breast cancer: role of the androgen receptor
Ayca Gucalp1, Tiffany A Traina
1Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York City, NY 10065, USA.
Abstract:
The androgen receptor (AR), a member of the steroid hormone receptor family, is expressed in more than 70% of breast cancers and has been implicated in breast cancer pathogenesis. The role of the AR is of particular interest in patients with estrogen- and progesterone receptor negative and HER2-negative cancers, which represent approximately 25% of all breast cancers. The "triple-negative" subset of tumors generally has a more aggressive clinical course and does not benefit from conventional endocrine targeted therapies. However, emerging evidence suggests that the AR may serve as a therapeutic target for a subset of triple-negative breast cancers. Herein, we review the role of the AR in breast cancer tumorigenesis and current progress and future directions in the development of AR-targeted therapies.
Insights
The androgen receptor (AR) plays a role in many breast cancers. Targeting AR may offer a new therapeutic strategy for aggressive triple-negative breast cancers lacking other receptor targets.
Area of Science:
- Oncology
- Molecular Biology
- Endocrinology
Background:
- Androgen receptor (AR) is a steroid hormone receptor family member.
- AR is expressed in over 70% of breast cancers, implicating it in pathogenesis.
- AR is of particular interest in estrogen receptor (ER)-negative, progesterone receptor (PR)-negative, and HER2-negative breast cancers (approx. 25% of all breast cancers).
Purpose of the Study:
- To review the role of AR in breast cancer tumorigenesis.
- To discuss current progress in AR-targeted therapies.
- To outline future directions for AR-targeted treatment strategies.
Main Methods:
- Literature review of existing studies on AR in breast cancer.
- Analysis of current therapeutic approaches targeting AR.
- Discussion of emerging evidence and future research avenues.
Main Results:
- AR is implicated in the pathogenesis of a significant portion of breast cancers.
- Triple-negative breast cancers (TNBC) are generally aggressive and lack targeted endocrine therapies.
- Emerging evidence suggests AR can be a therapeutic target in a subset of TNBC.
Conclusions:
- AR plays a crucial role in breast cancer development and progression.
- Targeting the AR pathway presents a promising therapeutic avenue for specific breast cancer subtypes, particularly TNBC.
- Further research and clinical trials are needed to fully elucidate and leverage AR-targeted therapies for improved patient outcomes.
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