The good news is that prostate cancer is often detected early (thanks to screening) and is very treatable. Early symptoms include blood in the urine or pink-colored urine, blood in semen, needing to urinate more often and trouble starting to urinate. More severe symptoms that can signal a need for more advanced testing:

Prostate cancer relies on genetic "switches", called enhancers, that can turn on tumor-promoting genes.Researchers at the University of Michigan

Advancell’s 212pb-advc001 Demonstrates Encouraging Safety and Compelling Anti-tumor Activity in Phase 1b in Prostate Cancer

That’s because most cases are caught before the cancer has spread. In fact, more than 75% of diagnoses are made while the disease is still confined to the prostate. When that happens, the outlook is excellent: The five-year survival rate is nearly 100%.