 AOP2014 like all interferon suppresses the malignant clone causing PV and subsequently is expected to possibly defer the onset of or avoid long term sequelae of PV. In addition, a reduction in the frequency of phlebotomies should be achieved. The peg-P-IFN-alpha-2b might potentially have a positive impact on reducing the drop-out rate compared to conventional IFNs. It is expected that the reduced frequency of administration of AOP2014 will contribute to higher compliance rates. 