1. Among classic myeloproliferative neoplasms, essential thrombocythemia is associated with the greatest risk of venous thromboembolism during COVID-19.
- Author
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Barbui T, De Stefano V, Alvarez-Larran A, Iurlo A, Masciulli A, Carobbio A, Ghirardi A, Ferrari A, Cancelli V, Elli EM, Andrade-Campos MM, Kabat MG, Kiladjian JJ, Palandri F, Benevolo G, Garcia-Gutierrez V, Fox ML, Foncillas MA, Morcillo CM, Rumi E, Osorio S, Papadopoulos P, Bonifacio M, Cervantes KSQ, Serrano MS, Carreno-Tarragona G, Sobas MA, Lunghi F, Patriarca A, Elorza BN, Angona A, Mazo EM, Koschmieder S, Carli G, Cuevas B, Hernandez-Boluda JC, Abadia EL, Cirici BX, Guglielmelli P, Garrote M, Cattaneo D, Daffini R, Cavalca F, Bellosillo B, Benajiba L, Curto-Garcia N, Bellini M, Betti S, Harrison C, Rambaldi A, and Vannucchi AM
- Subjects
- Aged, Aged, 80 and over, Bone Marrow Neoplasms complications, COVID-19 complications, Cohort Studies, Europe epidemiology, Female, Humans, Male, Middle Aged, Myeloproliferative Disorders complications, Pandemics, Retrospective Studies, Risk Factors, SARS-CoV-2 physiology, Thrombocythemia, Essential complications, Bone Marrow Neoplasms epidemiology, COVID-19 epidemiology, Myeloproliferative Disorders epidemiology, Thrombocythemia, Essential epidemiology, Venous Thromboembolism epidemiology, Venous Thromboembolism etiology
- Abstract
In a multicenter European retrospective study including 162 patients with COVID-19 occurring in essential thrombocythemia (ET, n = 48), polycythemia vera (PV, n = 42), myelofibrosis (MF, n = 56), and prefibrotic myelofibrosis (pre-PMF, n = 16), 15 major thromboses (3 arterial and 12 venous) were registered in 14 patients, of whom all, but one, were receiving LMW-heparin prophylaxis. After adjustment for the competing risk of death, the cumulative incidence of arterial and venous thromboembolic events (VTE) reached 8.5% after 60 days follow-up. Of note, 8 of 12 VTE were seen in ET. Interestingly, at COVID-19 diagnosis, MPN patients had significantly lower platelet count (p < 0.0001) than in the pre-COVID last follow-up.This decline was remarkably higher in ET (-23.3%, p < 0.0001) than in PV (-16.4%, p = 0.1730) and was associated with higher mortality rate (p = 0.0010) for pneumonia. The effects of possible predictors of thrombosis, selected from those clinically relevant and statistically significant in univariate analysis, were examined in a multivariate model. Independent risk factors were transfer to ICU (SHR = 3.73, p = 0.029), neutrophil/lymphocyte ratio (SHR = 1.1, p = 0.001) and ET phenotype (SHR = 4.37, p = 0.006). The enhanced susceptibility to ET-associated VTE and the associated higher mortality for pneumonia may recognize a common biological plausibility and deserve to be delved to tailor new antithrombotic regimens including antiplatelet drugs.
- Published
- 2021
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