San Francisco, CA (UroToday.com) — Scientists have found a switch that is associated with prostate cancers spreading or forming metastases (secondary tumours). The researchers caution that this work is still at an early stage, and needs further investigation to see if it applies to all prostate cancers. Up to 15% of patients have a high risk of prostate cancers, potentially leading to significantly increased mortality over time. The work is presented at the virtual European Association of Urology Congress.