Feasibility and safety of peripheral blood stem cell collection in children with poor-prognosis solid tumors: A single center experience

This study reports thr data of 32 children with poor-prognosis solid tumors who had 78 PBSC harvests on Fenwall CS-3000plus after mobilization mainly by different treatment protocol chemotherapy regimens followed by G- or GM- CSF (92 % of patients) or by G-/GM-CSF alone (8%). Timing of procedure was predicted br studying the blood count. When the white blood cell and platel et count, reached a median of 8.1 (0.9-37.3) and 95 (16-37.3) x 10(9)/L, re spectively, the median number of 2.7 (0.005-16.8) x 10(6) CD34(+)/kg with 1 .5 (0.005-11.6) x 10(6) CD34(+)/kg for 1 blood volume Processed runs obtain ed per procedure. In the group of 13 patients with low body weight (median 14 [10-20] kg) 32 leukopherses were performed. The extracorporal line was p rimed with donor red blood cells in the patients with the weight below 15 k g. No difference was observed in CD34(+) content in harvests whether GM-CSF was begun on day +1 or on day +3 after chemotherapy.