It’s my understanding that bone marrow transplants are very risky as many patients reject the marrow. Not everyone is eligible. I believe age is a factor in eligibility but not sure. I have ET and am holding off taking hydrea as long as possible due to its potential side effects. Hoping to take Pegasys which is a pegalated interferon when the time comes. Some doctors call it a chronic leukemia because it is a blood cancer. Some doctors still say it as a “blood disorder” even though it’s been classified as a cancer since 2008 when the mutations were discovered.