Treatment strategies in low-volume metastatic castration-resistant prostate cancer

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Abstract

Purpose of review

There are currently limited data to guide the optimal management of patients with low-volume metastatic castration-resistant prostate cancer (mCRPC). In this review, we critically assess the most relevant clinical data, and discuss opportunities for advancing therapeutic options in this patient population.

Recent findings

Over the past decade, treatment options for mCRPC have expanded beyond taxanes to include abiraterone/prednisone, enzalutamide, sipuleucel-T, and radium-223. However, only a subset of patients in the landmark phase 3 studies would meet criteria consistent with low-volume mCRPC, and optimal treatment approach for this patient population is unclear. There is emerging evidence that mCRPC patients who harbor low-volume or indolent disease may derive the most benefit from immunotherapy. Whereas prospective data are lacking, stereotactic body radiation appears to be well tolerated and effective for local control of metastases in oligometastatic CRPC.

Summary

Prospective studies are needed to establish optimal therapeutic approaches in carefully selected low-volume mCRPC patients. Advances in functional imaging and molecular profiling should provide opportunities to optimize patient selection for effective treatment strategies.

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