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Updated: May 25, 2026

A Bioluminescent and Fluorescent Orthotopic Syngeneic Murine Model of Androgen-dependent and Castration-resistant Prostate Cancer
Published on: March 6, 2018
The evolving paradigm of second-line hormonal therapy options for castration-resistant prostate cancer
Kevin D Courtney1, Mary-Ellen Taplin
1Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02215, USA.
Purpose Of Review:
The review examines recent advances in second-line hormonal therapy for the treatment of castrate-resistant prostate cancer (CRPC).
Recent Findings:
Recent data highlight the continued importance of androgen signaling in CRPC. These findings have spurred the development of novel inhibitors of adrenal and intra-tumoral androgen synthesis and novel androgen signaling inhibitors with activity in CRPC. In the past year abiraterone acetate, a CYP17 (17α-hydroxylase/17, 20 lyase) inhibitor, received US FDA approval for use in the treatment of metastatic CRPC in patients previously treated with docetaxel. Additionally, the novel androgen signaling inhibitor MDV3100 has been reported to confer a survival advantage compared to placebo in the same patient population. Here we review the scientific rationale for targeting androgen signaling in CRPC and the recent pivotal trials that support the use of novel second-line hormonal therapies. Additionally, we summarize ongoing preclinical and clinical efforts to ascertain and overcome mechanisms of resistance.
Summary:
Novel inhibitors of extra-gonadal androgen synthesis and androgen receptor function demonstrate the continued importance of androgen signaling in CRPC. These agents have improved clinical outcomes for patients with metastatic CRPC.
Insights
Novel hormonal therapies targeting androgen signaling are improving outcomes for castrate-resistant prostate cancer (CRPC). New inhibitors of androgen synthesis and signaling show significant clinical benefits in patients with metastatic CRPC.
Area of Science:
- Oncology
- Endocrinology
- Urology
Background:
- Castrate-resistant prostate cancer (CRPC) remains a significant clinical challenge.
- Androgen signaling pathways are crucial drivers of CRPC progression.
- Effective second-line treatment options for CRPC are continuously being sought.
Purpose of the Study:
- To review recent advancements in second-line hormonal therapies for CRPC.
- To highlight the role of novel androgen signaling inhibitors and androgen synthesis inhibitors.
- To summarize pivotal clinical trials and ongoing research in CRPC treatment.
Main Methods:
- Literature review of recent studies on CRPC hormonal therapy.
- Analysis of clinical trial data for novel agents.
- Examination of the scientific rationale for targeting androgen signaling.
Main Results:
- Novel inhibitors targeting androgen synthesis (e.g., abiraterone acetate) and signaling (e.g., MDV3100) demonstrate efficacy in CRPC.
- Abiraterone acetate, a CYP17 inhibitor, is FDA-approved for metastatic CRPC post-docetaxel.
- MDV3100 has shown a survival advantage in metastatic CRPC patients.
Conclusions:
- Targeting extra-gonadal androgen synthesis and androgen receptor function is vital in CRPC.
- New hormonal therapies have significantly improved clinical outcomes for metastatic CRPC patients.
- Research continues to explore mechanisms of resistance and develop further therapeutic strategies.
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Published on: September 8, 2017
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