It can be hard to work on it when you are close to it personally. I know that from experience. Unless you get an MD you will be disconnected from the clinical

It can be hard to work on it when you are close to it personally. I know that from experience. Unless you get an MD you will be disconnected from the clinical side and your approach would be based on fundamental research. But you are not wrong, gene therapy (crispr) w/ cardiac stem cells, mRNA therapeutics (like the covid vaccines) and AI guided/designed therapeutics are definitely avenues worth pursuing. You would be a motivated researcher. Another way in is to be the money and figure out ways to fund the research. You might also consider artificial heart research as well as transplant research as I assume those are future options. We may get porcine hearts in the future. Anyway, those are the current technologies that seem promising. Is there a non human animal model of the disease? It will be a long journey but take time to enjoy the ride whatever you do.