Would you treat iron deficiency in post PV myelofibrosis if anemia is the predominant concern?  

Absolutely would treat with IV iron. I have discussed this with KOL's and there is unanimity. You may buy a protracted period with anemia control. Not giving it is ill-considered. Where there is disagreement, is in the P Vera patient in excellent control, not anemic but with symptomatic iron defici...