Immunotherapy, where drugs target specific mutation mechanisms, is making massive improvements lately. I have seen bone scans from metastasized patients before

Immunotherapy, where drugs target specific mutation mechanisms, is making massive improvements lately. I have seen bone scans from metastasized patients before and after, where most metastasizes were gone after a couple of weeks of treatment. Unfortunately today these drugs only work for a small subset of all tumor mutations, so it will not work for everyone and even if it works, the tumor might mutate and kill you anyway.