Clinicopathologic features and prognostic indicators in Chinese patients with myelofibrosis
2016
Objective: To define the clinicopathologic features, outcome, and prognostic indicators of myelofibrosis (MF) in Asian patients.Methods: Two hundred and seventy consecutive Chinese patients (primary MF, n = 207; post-polycythemia vera MF, n = 27; and post-essential thrombocythemia MF, n = 36) from seven regional referral hospitals were analyzed.Results: The median overall survival (OS) for primary MF was 66 months. Multivariate analysis showed that age >65 years (P = 0.02), platelet count <100 × 109/l (P = 0.001), and leukemic transformation (P = 0.001) negatively impacted on OS. The median OS of 63 patients with secondary MF was 44 months. In primary MF, the 10-year cumulative risk of leukemic transformation was 28%. On multivariate analysis, unfavorable karyotypes significantly predicted inferior leukemia-free survival (LFS) (P = 0.03). In secondary MF, the 10-year cumulative risk of leukemic transformation was 31%. Circulating blasts ≥1% significantly predicted inferior LFS (P = 0.04). The internationa...
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