Task: Answer Verification
Input (English): Question: Do a phase II study of sulforaphane-rich broccoli sprout extracts in men with recurrent prostate cancer?
Answer: Treatment with 200 μmoles/day of sulforaphane-rich extracts did not lead to ≥50% PSA declines in the majority of patients. However, because of the safety of treatment and the effects on PSADT modulation, further studies, including those with higher doses, may be warranted to clarify the role of sulforaphane as a prevention agent or treatment agent.
Output (English): yes