Well you know PCa is driven by thousands of genes it is believed, and Decipher only tests 22. I would feel a heck of a lot better if they tested 483 or 948 or some higher than 22 genes to come up with a score. It also hasn't upped the number in quite some time, or many many years have gone by and no more genes added to their test. It is a speculation call with maybe 2% of genes trying to call something, but they do it with the stock market, lottery, drafting football players, everything is a bet sort of.