This is in reply to ranger44, and is a bit off topic for this "SpaceOAR" thread.
I too have a low Decipher (0.18, even lower than yours, which puts me in their 14th percentile of risk). They say my "10-Year Risk of Metastasis" is just under 1%, BUT that prediction is only IF I GET WHOLE-PROSTATE THERAPY ( WP radiation therapy or radical prostatectomy).

Although age 78 and with some cardiac issues, the VA's new multi-factor lifespan predictor (https://doi.org/10.1016/j.euo.2023.11.023) says I have a good chance (more than 25%) of living another 15 years. So what to do?
Long-term (15 year) statistics simply don't yet exist for the newer therapies - they haven't been around long enough yet.
Do I treat now to improve my odds while I am healthy enough to endure the side effects? Or do I wait - with active surveillance - and hope for the best. If I go the active surveillance route, and only intervene if and when it becomes necessary, it basically triples my small (2%) chance that I will end up with metastasis (and chemotherapy) in my final years, versus if I treat now.
If my Decipher report tells me what my risk is if - like you - I choose the active surveillance route, I don't see it. (I wish it did, but it doesn't).
It's our choice, with no way to know for sure what the outcome would have been had we chosen otherwise. - in other words, a crapshoot.