Disparities and Trends in Polycythemia Vera–Related Mortality in U.S. Adults Aged ≥45 Years from 1999 to 2023

Background: Polycythemia vera (PV) is a rare myeloproliferative neoplasm characterized by excessive red blood cell production, leading to increased risk of thrombosis and other complications. Despite its clinical significance, trends in PV mortality across demographic groups in the US remain understudied. Methods: Nationwide mortality records were obtained from the CDC-WONDER database from 1999 to 2023 among U.S. adults aged ≥45 with PV. Age-adjusted mortality rates (AAMRs) per 100,000 population were calculated for variables. Joinpoint regression analysis was utilized to evaluate annual percent changes (APCs). Results: From 1999 to 2023, a total of 24,236 deaths occurred among adults with PV in the U.S. The overall AAMR decreased from 1.15 in 1999 to 0.73 in 2023 (AAPC: -1.96; 95% CI: -2.28 to -1.73; p < 0.001). The AAMR for men decreased from 1.38 in 1999 to 0.87 in 2023 (AAPC-1.88; 95% CI: -2.36 to -1.37; p < 0.001), and for women decreased from 1 in 1999 to 0.62 in 2023 (AAPC: -2.03; 95% CI: -2.66 to -1.43; p < 0.001). Across racial/ethnic groups, AAMR was highest in non-Hispanic White (0.93 per 100,000). Overall, AAMRs were highest in the Midwest (0.95). The majority of deaths occurred in medical facilities (39.36%). Rural areas had a higher overall AAMR (0.91) compared to urban areas (0.82). Conclusion: Trends in (PV) mortality declined overall from 1999 to 2023—higher trends observed in men, rural areas, the Midwest region, and NH White.