Yes, Joyce, I had testing over the summer for amyloidosis before I started on mavacamten (Camzyos) in October, and tested negative. It is one of a few conditions that can mimic the signs of HCM. The fact that you're being tested for it is a sign you're in good hands. Amyloidosis is no doubt serious, but I've not heard it described as a cancer.

And yes, it is scary to wonder about all these potential diagnoses and complications -- as we newly diagnosed and/or newly symptomatic folks climb the learning curve of new terminology, new testing and diagnostic protocols, new treatment options -- in short, as we learn to adapt and adjust to living our new normal.

One way I am learning to live with the fear of the unknown (no, I can't just will it away) is to self-educate, as you are doing. Keep asking questions, of health care providers, of peers (thank you Mayo Clinic for this site), of so many online sources -- especially including as I mentioned earlier in this thread, the HCMA -- so you can make fully informed decisions moving forward.