The CEO (or whatever she is) of Histogen answers it all here:
https://www.youtube.com/watch?v=WZvCsanjllA
It's still uncertain (as far as public knowledge goes) whether it's going to be effective enough, but it's the company that's apparently closest to putting a new treatment on the market. It's so hard to have confidence in anything these days but if I had to back one horse it's this one.
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