There is, partial reprogramming using Yamanaka factors. The problem is that they can turn some cells into stem cells if they are applied too long, so while they

There is, partial reprogramming using Yamanaka factors. The problem is that they can turn some cells into stem cells if they are applied too long, so while they work amazingly well, they have a side effect of causing cancer. There are 2 ways to fix the problem: have a cure for cancer or use other proteins instead of Yamanaka factors that only do partial reprogramming. There's research going on in both direction, though the second solution could have more research in it (the $2B injection to Altos Labs by Jeff Bezos can help though).