Epidemiological and Clinical-pathological Factors of Philadelphia-negative Myeloproliferative Neoplasms in Ecuador

Inclusion Criteria: * 18 years and older * Patients with confirmed diagnosis of Philadelphia-negative Myeloproliferative Neoplasms Exclusion Criteria: * Patients with translocation t(9;22)(q34:q11.2) with subsequent formation of the BCR-ABL1 fusion gene determined by cytogenetics or fluorescence in situ hybridization (FISH) * Absence of the histopathological report in the clinical history and the corresponding plaque, except in the case of Polycythemia Vera that does not require them for diagnosis, according to the 2022 WHO classification