David Gelly, a patient with Polycythemia Vera (PV), discusses some of the resources available for this rare condition, including Voices of MPN. PVs are a group of rare blood cancers called Myeloproliferative Neoplasms (MPNs).

MPNs are a group of diseases that affect normal blood cell production in the bone marrow. In this case the bone marrow causes an overproduction of one or more blood cell types (red cells, white cells or platelets). Complications arise over time due to the abnormally high number of blood cells that accumulate in the bone marrow and in the circulating blood.