The timing of granulocyte–colony-stimulating factor administration after chemotherapy does not affect stem and progenitor cell apheresis yield: a retrospective study of 65 cases |
| |
Authors: | F Lefrère F Audat O Hermine M Cavazzana-Calvo C Belanger B Arnulf A Buzyn B Varet |
| |
Institution: | Department of Hematology and the Blood Center, Necker Hospital, Paris, France. bruno.varet@nck.ap-hop-paris.fr |
| |
Abstract: | BACKGROUND: The optimal time for postchemotherapy granulocyte-colony stimulating factor (G-CSF) administration before peripheral blood stem and progenitor cell (PBPC) collection is not well defined. The impact of G-CSF scheduling on the number of CD34+ cells collected by leukapheresis from 65 patients with malignant disease was studied retrospectively. STUDY DESIGN AND METHODS: Chemotherapy was performed on Days 1 and 2 and was followed by G-CSF to mobilize PBPCs. In Group 1, 30 patients received the first dose of G-CSF immediately after the end of chemotherapy, as commonly recommended. In Group 2, 35 patients received the first G-CSF dose after the end of chemotherapy (Days 7 or 8). RESULTS: No difference was observed between the two groups in white cell recovery and the median number of CD34+ cells harvested. The number of leukapheresis procedures necessary to obtain the minimal number of 3 x 10(6) CD34+ cells per kg was the same. The proportion of patients with a failure of PBPC collection was similar, and G-CSF consumption was reduced in Group 2 without increasing infectious risks. CONCLUSION: Early administration of G-CSF after chemotherapy appears not to be a prerequisite for satisfactory PBPC collection. This approach could allow significant savings in terms of medical cost. A randomized and prospective study would be necessary, however, to assess the validity of these conclusions. |
| |
Keywords: | Cy = cyclophosphamide G–CSF = granulocyte–colony-stimulating factor MM = multiple myeloma NHL = non-Hodgkin's lymphoma PBPC(s) = peripheral blood stem and progenitor cell(s) WBC(s) = white cell(s) |
|
|