RT Journal Article T1 Low-risk polycythemia vera treated with phlebotomies: clinical characteristics, hematologic control and complications in 453 patients from the Spanish Registry of Polycythemia Vera. A1 Triguero, Ana A1 Pedraza, Alexandra A1 Pérez-Encinas, Manuel A1 Mata-Vázquez, María Isabel A1 Vélez, Patricia A1 Fox, Laura A1 Gómez-Calafat, Montse A1 García-Delgado, Regina A1 Gasior, Mercedes A1 Ferrer-Marín, Francisca A1 García-Gutiérrez, Valentín A1 Angona, Anna A1 Gómez-Casares, María Teresa A1 Cuevas, Beatriz A1 Martínez, Clara A1 Pérez, Raúl A1 Raya, José María A1 Guerrero, Lucía A1 Murillo, Ilda A1 Bellosillo, Beatriz A1 Hernández-Boluda, Juan Carlos A1 Sanz, Cristina A1 Álvarez-Larrán, Alberto A1 On behalf of the MPN Spanish Group (GEMFIN), K1 Low-risk K1 Myelofibrosis K1 Phlebotomies K1 Polycythemia vera K1 Thrombosis AB Hematological control, incidence of complications, and need for cytoreduction were studied in 453 patients with low-risk polycythemia vera (PV) treated with phlebotomies alone. Median hematocrit value decreased from 54% at diagnosis to 45% at 12 months, and adequate hematocrit control over time ( 60 years, and microvascular symptoms constituted the main indications for starting cytoreduction. Median duration without initiating cytoreduction was significantly longer in patients younger than 50 years ( YR 2022 FD 2022-08-30 LK http://hdl.handle.net/10668/19719 UL http://hdl.handle.net/10668/19719 LA en DS RISalud RD Apr 19, 2025