The first monoclonal antibody therapy hit markets decades ago. It still hasn’t percolated to even the middle class in countries like india.

If a drug or therapy truly does extend life span I can also see systems forming where the few want to keep it to themselves and away from the many. One way or another I can’t imagine this being the the top priority of anyone but the most vain (personal opinion) so I would not associate myself with such research is all.