Collection efficiency on the Fenwal CS3000 when using filgrastim (recombinant methionyl human granulocyte colony-stimulating factor) as a peripheral blood stem cell mobilization agent.
The collection efficiency (CE) of the Fenwal CS3000 in collecting peripheral blood stem cells during post-chemotherapy recovery phase ranges from 58% to 73%. Recently filgrastim (recombinant methionyl human granulocyte colony-stimulating factor [G-CSF]) has also been shown to be effective as a mobilization agent although mobilization occurs during elevated and not low normal leukocyte counts. We compared the mononuclear cell (MNC) CE and the myeloid progenitor cell (CFU-GM) CE among 11 patients with G-CSF mobilization (33 procedures) and 19 patients during recovery following myelosuppression chemotherapy (93 procedures). Pre-apheresis leukocyte, neutrophil, MNC, and PB CFU-GM counts were significantly higher in the G-CSF group, while the granulocyte percentage in the apheresis products was similar in both groups. Both MNC CE (81.8 +/- 4.5% vs. 64 +/- 2.4%) and CFU-GM CE (79.5 +/- 10.5% vs. 55.8 +/- 3.5%) were higher in the G-CSF group. Only the pre-apheresis MNC count showed an independently significant correlation for both CE (P < .001). The higher CE in the G-CSF group can only be partly explained by a rise in MNC count during apheresis. These data suggest that the blood cell separator works better with leukocytosis, and especially with a higher MNC count. The improvement in CE is another benefit of G-CSF mobilization over chemotherapy mobilization.
To
L B
LB
Leukaemia Research Unit, Institute of Medical and Veterinary Science, Adelaide, Australia.
Stemmelin
G R
GR
Haylock
D N
DN
Bayly
J L
JL
Thorp
D
D
Rawling
C M
CM
Trimboli
S
S
Juttner
C A
CA
D000328:Adult; D005260:Female; D000069585:Filgrastim; D016179:Granulocyte Colony-Stimulating Factor / Q000494:pharmacology*; D006412:Hematopoietic Stem Cells / Q000166:cytology*; D006801:Humans; D007937:Leukapheresis / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011994:Recombinant Proteins / Q000494:pharmacology
D011994:Recombinant Proteins; D016179:Granulocyte Colony-Stimulating Factor; D000069585:Filgrastim