Well, this same drug (working name MF-300) is a PDGH-15 inhibitor and has already been through phase 1 human trials for a separate condition.

Because PDGH-15 also causes age related muscle weakness.

Now, PDGH-15 also plays a role in cancer prevention, and there may be a few other less obvious functions.

I don't know if the results of the phase 1 trials have been published yet, but it's been a while since I checked.

I've been hearing about MF-300 for a little under a year, and with these same claims about restoring cartilage.