My mother had polycythemia Vera in the 1990's. She had it for about 10 years and died at the turn of 2000 at age 87 of an unrelated problem. I was diagnosed with thrombocythemia almost a year ago. Just before I had a lot of stress with my husband with COVID shot killing his kidneys, a heart valve just put in and then months later , trying to recoup, had hernia bleeding on top of blood clots. I only slept 2 hours at a time, being completely stressed. He died on my birthday. I ended up getting pneumonia without having any breathing problems, only liver really hurting. After that I got thrombocythemia verdict. My numbers weren't coming down. Did the bone marrow biopsy and had JAK2. My nephew has the slow moving leukemia. He just started chemo. Guess there is a new drug that can solve his problem. Yes, I would say this malady can be inherited.