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  • Title: Leukapheresis and cranial irradiation in patients with hyperleukocytic acute myeloid leukemia: no impact on early mortality and intracranial hemorrhage.
    Author: Chang MC, Chen TY, Tang JL, Lan YJ, Chao TY, Chiu CF, Ho HT.
    Journal: Am J Hematol; 2007 Nov; 82(11):976-80. PubMed ID: 17636473.
    Abstract:
    To assess the role of leukapheresis and cranial irradiation in reducing the incidence of intracranial hemorrhage (ICH) and early death in patients with hyperleukocytic acute myeloid leukemia (AML) and the impact of such treatment on survival. This study retrospectively analyzed the records of 75 patients with hyperleukocytic AML who had a white cell count over 100,000/microL. All patients had de novo AML except for two with therapy-related AML. Various factors were assessed for their impact on morbidity and mortality, particularly the role of pre-induction leukapharesis and cranial irradiation. The most significant risk factors for ICH were the presence of two or more symptoms of leukostasis (odds ratios [OR] 10.6, 95% CI: 2.67-42.02; P = 0.001) and respiratory distress (OR 5.41, 95% CI: 1.44-20.32, P = 0.012). The most significant risk factors for early death were age >or= 65 (OR 4.21, 95% CI: 1.45-12.21, P = 0.008), respiratory failure (OR 3.34, 95% CI: 1.24-9.50, P = 0.018), and two or more symptoms (OR 3.50 95% CI: 1.16-10.52, P = 0.026). Neither leukapheresis nor cranial irradiation were significantly associated with a decreased incidence of ICH (P = 0.349 and 0.378, respectively). Leukapheresis had no significant influence on early death (P = 0.367). The median survival patients receiving no pretreatment was 10.50 months (range 2.58-18.42) and for those receiving pretreatment 1.50 months (range 0.10-3.16; log-rank test, P = 0.062). Leukapheresis and cranial irradiation do not improve survival or decrease the incidence of ICH in adults with hyperleukocytic AML.
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