[Effect of FLAG consolidation therapy on mobilization of autologous peripheral blood stem cells in patients with acute myelogenous leukemia].

This study was aimed to investigate the effect of FLAG consolidatory therapy on peripheral blood stem cell (PBSC) mobilization in patients with acute myelogenous leukemia (AML) for autologous PBSC transplantation. A total of 15 AML patients were enrolled in this study. 10 patients were male, and 5 were female, with ages ranging from 14 to 51 (median 36) years. Out of 15 patients 13 were newly diagnosed, and 2 were refractory/relapsed AML. All patients were consolidated with FLAG regimen which including fludarabine 50 mg/d, days 1-5; Ara-C 2 g/(m2.d), days 1-5; G-CSF 300 microg/d, injection subcutaneously starting 24 hours before Ara-C and continuing until neutrophil count exceeding 1.0x10(9)/L. The harvest of the stem cells was performed after hematologic recovery from the second or third course of FLAG consolidation, or mobilized by high dose etoposide (1.6 g/m2). The results showed that among 15 patients scheduled for PBSC harvest, 11 (73.3%) harvested a median of 3.52x10(6)/kg CD34+ cells (range 2.2-4.6) and underwent autologous transplantation, while the minimal number of CD34+ cells could not be reached in the remaining 4 patients. It is concluded that the FLAG regimen is effective and well-tolerated treatment as consolidation regimen in AML, which does not influence PBSC mobilization and autologous transplantation after 2 courses of FLAG.