Scientists have identified what may be the Peyton Manning of prostate cancer. It’s a protein that’s essential for the disease to execute its game plan: Grow and spread throughout the body. Like any good quarterback, this protein has command over the entire field; not only does it control cell growth in tumors that are sensitive to hormone therapy, a common treatment for men with advanced disease, but also in tumors that grow resistant to such treatment – a dismal development that leaves men and their doctors with no good options to turn to.