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Aim. To evaluate the prognostic significance of the complex karyotype including del(5q), –7, del(7q) abnormalities in acute myeloid leukemia (AML) after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Materials & Methods. Forty-four AML patients with chromosome 5 and/or 7 abnormalities (22 women and 22 men, aged from 1.2 to 67 years, median 31.2 years) were examined. Analysis of overall (OS) and event-free survival (EFS) predictors after allo-HSCT in patients with different clinical, transplant and cytogenetic characteristics was performed. Results. Prior to allo-HSCT, the complex karyotype (with three or more chromosomal abnormalities) was observed in 19 (43 %) patients, the monosomal karyotype was in 8 (18 %) patients. Univariate analysis demonstrated that OS and EFS differed in patients from different age groups (≥ 18 vs. < 18 years; p = 0.01 and p = 0.05, respectively), with different disease status at transplantation (1 remission vs. other clinical status; p = 0.1 and p = 0.008, respectively), with and without complex karyotype (СK– vs. CK+; p = 0.05 and p = 0.002, respectively), with and without monosomal karyotype (МK– vs. MK+; p = 0.009, only for EFS), and with different stem cells source (bone marrow vs. other source; p = 0.03 only for OS). Multivariate analysis confirmed that age of 18 years and more (p = 0.02 and p = 0.01, respectively), active disease at allo-HSCT (p = 0.04 and p = 0.005, respectively), complex karyotype (p = 0.04 и p = 0.0008, respectively) and stem cell source other than bone marrow (p = 0.02 only for OS) were independent predictors of OS and EFS deterioration. Conclusion. The study demonstrates that chromosome 5 and/or 7 abnormalities as a part of the complex karyotype is

kliničeskaâ onkogematologiâ

Allogeneic Hematopoietic Stem Cell Transplantation in Acute Myeloid Leukemias: Prognostic Significance of Complex Karyotype Including del(5q), -7, del(7q) Abnormalities