Pregnancy Outcomes, Risk Factors, and Gestational Cell Count Trends in Pregnant Women with Essential Thrombocythemia and Polycythemia Vera

BACKGROUND: Myeloproliferative neoplasms (MPNs) including essential thrombocythemia (ET) and polycythemia vera (PV) are commonly diagnosed in the sixth decade, but as many as 20% of patients are younger than 40. This introduces the possibility of pregnancy and need for specialized management. ET/PV patients have a higher risk of pregnancy complications, with a reported 68.5% live birth rate (LBR), and 1.8% and 2.4% risk of major thrombotic and...