prostate cancer foundation scientific retreat was held in october 2017 in washington, dc, and was attended by more than 550 scientific leaders from academia, governmental agencies and the biopharmaceutical industry. the distinguished gentlemen's ride each year, smartly-dressed gentlefolk in over 400 cities from 79 countries will straddle the saddles of their café racers, bobbers, scramblers and other custom motorcycles to raise awareness and help fund the cure for prostate cancer.