Prospective study for functional and phenotypic characterization of monocytes in philadelphia-negative myeloproliferative neoplasms
Diagnosis of PV, ET, pre-myelofibrosis or primary myelofibrosis according to WHO 2022 criteria (including BOM for ET, premyelofibrosis and primary myelofibrosis)
Patient who has not received treatment specific to hemopathy at the time of sampling
Obtaining the signature of consent to participate in the study
Patient having consented to be included in the "Malignant Hemopathy" collection of Angers University Hospital and in FIMBANK database
Person not affiliated to a social security scheme or beneficiary of such a scheme
Patient with another hemopathy or another active cancer at the time of diagnosis
Minor patient at diagnosis (< 18 years old)
Patient not capable or without agreement from the guardian or legal representative