JAK2 and myeloproliferative disorder: Although those with cytopenias may represent advanced disease and would therefore be more likely to have a formal diagnosis, we further analyzed the association of JAK2-mutant CHIP with both incident and prevalent VTE when MPN diagnoses were excluded based on ICD10 codes, cytoses, and cytopenias; the HR for incident VTE with JAK2-mutant CHIP was 7.49, and the prevalent odds for VTE ratio was 14.59 (supplemental Figure 1).