My dad was diagnosed with multiple myeloma 2 years ago. His bone marrow transplant failed (frequent first line of defense) and he just finished CAR-T therapy a couple months ago. The initial side effects from the treatment were _bad_, but everything is looking good right now. CAR-T is really mindbogglingly insane cyberpunk stuff.
I had a close relative diagnosed with multiple myeloma 25+ years ago (I don't remember the exact year) who only lived for a couple more years. It was rough back then. I'm really glad to hear that there is much better treatment these days.