I just had a BMB 3-4 months ago and the lab report stated I had a JAK2 mutation which led the Dr to conclude I had ET. But 2 weeks later, my labs were reevaluated and came back saying I had PV. Just went to UVA Oncology and the blood cancer specialist recommended bypassing the hydroxyurea, starting Besremi, because hydroxyurea only treats the symptoms. Besremi targets the JAK2 mutations. So much so that some PV & ET patients go into remission.

Surely something to consider.

Best of luck.