What constitutes fast for me is if the full suite of regenerative medical technology is in patients' hands by 2050. Some things will happen faster than others, and some drugs are already close to approval, but most, if not all, should be here by 2050. If they aren't, I'm going to be pretty disappointed. Also, phase 2 clinical trials have already started for the drug in the article, so it shouldn't be more than a couple of years.