Mortality, Thrombotic, Hemorrhagic, and Cardiovascular Outcomes With JAK1/JAK2/IRAK1 Inhibitors Versus Conventional Cytoreductive Therapy in Myeloproliferative Neoplasms: A Real-World Propensity-Matched Analysis (SOHO 2026) - Sep 1, 2026 - Abstract #MPN-1251; "Patients: Adults aged 18–75 years with MPN-spectrum diagnoses (polycythemia vera, essential thrombocythemia, primary myelofibrosis, chronic myeloproliferative disease, CML, MDS; ICD-10 codes D45, D46, D47.1, D47.3, D47.4, D47.Z9, C92.1) on/after January 1, 2010, initiating a JAK1/JAK2/IRAK1 inhibitor (ruxolitinib, fedratinib, pacritinib, momelotinib; n = 4251) or non-JAK cytoreductive agent (hydroxyurea, anagrelide, interferon alfa-2a/2b; n = 14448) within 3 months of diagnosis... JAK1/JAK2/IRAK1 inhibitor therapy was associated with markedly higher 3-year mortality, hospitalization, major bleeding, VTE, and heart failure compared with non-JAK cytoreductive therapy. Because JAK inhibitors are preferentially used in higher-risk MPN phenotypes imperfectly captured by ICD coding, residual confounding by unmeasured disease severity likely contributes. Prospective comparative effectiveness studies with granular severity adjustment are needed."
Clinical • Real-world • Real-world evidence • Chronic Myeloid Leukemia • Essential Thrombocythemia • Hematological Malignancies • Leukemia • Myelodysplastic Syndrome • Myelofibrosis • Myeloproliferative Neoplasm • Oncology • Polycythemia Vera • IRAK1 • JAK1 • JAK2
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Sandipta Banerjee MD 1; Chanchal Maheshwari MD 2; Zainab Rahim MBBS 3; Rukash Khan Niazi MBBS 4
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