Targeting the androgen receptor in the management of castration-resistant prostate cancer: rationale, progress, and

R Leibowitz-Amit1, A M Joshua

  • 1Department of Medical Oncology, Princess Margaret Hospital, Toronto, ON.

Insights

Significant advancements in understanding castration-resistant prostate cancer (CRPC) have led to new therapies targeting androgen receptor (AR) pathways. Novel drugs like abiraterone acetate and enzalutamide improve survival in metastatic CRPC patients.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Prostate cancer progression involves castration-resistant states.
  • Castration-resistant prostate cancer (CRPC) often remains androgen receptor (AR)-dependent.
  • Understanding AR pathway dependence is crucial for CRPC treatment.

Purpose of the Study:

  • To review molecular mechanisms of CRPC and AR dependence.
  • To summarize clinical trials targeting hormonal pathways in metastatic CRPC.
  • To discuss resistance mechanisms and future research directions for novel hormonal agents.

Main Methods:

  • Literature review of molecular mechanisms in CRPC.
  • Summary of completed and ongoing clinical trials for metastatic CRPC.
  • Analysis of resistance mechanisms and future therapeutic strategies.

Main Results:

  • New drugs, abiraterone acetate and enzalutamide, prolong survival in metastatic CRPC.
  • Abiraterone acetate shows efficacy pre-chemotherapy.
  • Ongoing development of novel AR-targeting agents and heat shock protein inhibitors.

Conclusions:

  • Novel hormonal therapies targeting the AR pathway represent a significant advancement in CRPC treatment.
  • Understanding and overcoming resistance mechanisms is critical for future therapeutic development.
  • Further research on drug sequencing and combinations is needed to optimize patient outcomes.

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