killing the cell is actually not a big deal, any given cell is generally replaceable. What you suggest is more or less what I mention; you could, say, try to a

killing the cell is actually not a big deal, any given cell is generally replaceable. What you suggest is more or less what I mention; you could, say, try to add back some genetic machinery for the cancer cells to recognize that they're defective, and then they kill themselves. Or help the higher level repair mechanism (the immune system) target cancer cells. To my understanding, trying to fix anything at the level between whole cell and DNA mutation is much harder.