COVID-19 Epidemic and Patients With Myeloproliferative Neoplasias

Study Overview
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Brief Summary
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The classic myeloproliferative neoplasias (MNP), including polycythemia vera (PV), essential thrombocythemia (ET), primary myelofibrosis (PMF) or secondary to PV or ET, are among the most frequent of malignant hemopathies, with overall prevalence estimated at around 10,000 patients followed in France. Due to the median age of patients around 65, the frequency of cardiovascular complications of these thrombogenic diseases and the impact of cytoreductive treatments on immune cells, these patients are considered to be at risk of developing forms severe of COVID-19. This study will assess the impact of MNPs on the risk of developing a severe form of COVID-19, identify new risk factors linked to the disease as well as the impact of treatments for MNPs according to their pharmacological class.

Detailed Description
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It is a descriptive, prospective epidemiological study using retrospective patient data, multicenter, non-interventional, carried out in FIM (French Intergroup of Myeloproliferative syndromes) / FILO (French Innovative Leukemia Organization) centers. This is an exploratory descriptive study in order to put in place as soon as possible a possible strategy for the protection of patients most at risk. The study will include all consecutive patients with MNP according to the WHO (World Health Organization) classification seen in consultation or teleconsultation over the duration of the study, whether or not they have had a COVID-19 infection. The collection of clinical data, treatment regimens and survival and death data will be carried out by the investigator or a member of his medical team, after delivering an information note to the patient informing him of the computerized processing of his data, subject to the patient's non-objection. The diagnosis of asymptomatic COVID 19 will be made on the presence of a positive serology and on the absence of clinical signs on questioning. The presence of a symptomatic COVID 19 infection will be posed on the presence of clinical signs +/- CT as identified by the practitioner who treated the patient and confirmed or not by a positive PCR and / or a positive serology. Data collected: Socio-demographic data (gender, date of birth) Description of hemopathy and its treatment Description of COVID-19 infection and its management Biological data: blood count, specific COVID-19 test results if available (PCR, serology). History, comorbidities Evolution of COVID-19 infection and possible specific treatment

Official Title
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Observational Study of the Impact of the COronaVirus Disease 2019 (COVID-19) Epidemic on Patients With Myeloproliferative Neoplasias

Conditions
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Myeloproliferative Neoplasm, COVID-19 Infection

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient with PV, ET, PMF or MF secondary to PV or ET diagnosed before the COVID-19 pandemic Seen in consultation or teleconsultation from May 2020 or deceased if the investigator became aware of this death during the study period Exclusion Criteria: Refusal to participate in the study

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Rate of serious coronavirus infection in different MNP patient subgroups | The crude rate of cumulative incidence of serious infection proven to COVID-19, compared to the population of the same age, same sex, same region of residence during the epidemic period. | Through inclusion period, an average of 6 months | 
| Proportion of MNP patients who had COVID-19 infection during the 2020 epidemic. | Number of MNP patients who had COVID-19 compared to general population in France | Through inclusion period, an average of 6 months | 
| Rate of death of MNP patients who had COVID-19 | Number of MNP patients who died from COVID-19 | Through study completion, an average of 1 year | 
| Rate of passages in intensive care with need for mechanical ventilation | Number of MNP patients hospitalized in intensive care with need for mechanical ventilation | Through study completion, an average of 1 year |