Clinical and Laboratory Characteristics of Polycythemia Vera

The structured collection of data necessary for the evaluation of the objectives will take place through the creation of a specific electronic archive with an expected duration of 7 years, possibly extendable. The electronic archive may be used to review case histories and to obtain or confirm new scientific evidence on Polycythemia Vera. Patients will be followed and treated within the care pathway provided by normal clinical practice. The following elements will be considered in each patient: age, recent and remote pathological history, characteristics of PV onset, histological, cytogenetic and molecular investigations of diagnostic definition, medical therapies performed, type of response to the therapies performed, complications of these therapies and pathology. All useful data will be collected exclusively through consultation of outpatient medical records. The planned enrollment period is 60 months (January 2019-December 2023). The observation period of enrolled patients is at least 2 years.