Journal
LEUKEMIA RESEARCH
Volume 39, Issue 8, Pages 801-804Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.leukres.2015.03.001
Keywords
MPN; Blastic phase; Azacytidine
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To highlight the role of azacytidine (AZA) in patients with myeloproliferative neoplasms developing blast phase (MPN-BP), we evaluated retrospectively 19 patients [M/F 15/4, median age 71.3 years, interquartile range (IQR) 64.5-77.7] reported in the database of our cooperative group. Median time from diagnosis to BP evolution was 52.7 months (IQR 11.2-181.8). All patients were treated with AZA at the standard dosage of 75 mg/m(2). Two patients died early after 5-AZA initiation from pulmonary fungal infection and respiratory failure respectively, 4 patients had a disease progression, 4 patients a stable disease, 3 patients had an hematological improvement, 1 patient a partial response and 5 pts (26.3%) a complete response (CR) after 4, 4, 4, 5, and 12 months. The median cumulative survival from BP evolution was 9.9 months (95%CI 6.6-13.1): the comparison with an historical cohort of 72 patients with MPN-BP treated with approaches other than AZA (median cumulative survival 3.1 months, 95%CI 1.1-5.0) showed a significant advantage for patients treated with AZA (p = 0.02). Our data confirm the relative efficacy and safety of AZA in this group of patients with otherwise dismal prognosis, underlining the possible achievement of long-lasting responses in a sizeable portion of them. (C) 2015 Elsevier Ltd. All rights reserved.
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