Abstract
Background: The lymphocyte dose (LY-DO) infused during an autograft influences absolute lymphocyte (ALC) recovery and survival following autologous stem cell transplantation (ASCT) in multiple myeloma (MM) patients. Factors influencing lymphocyte yield (LY-C) during leukapheresis have been poorly studied. Methods: Factors that could influence survival, LY-C and CD34+ cell yield were analyzed in 122 MM patients. Three mobilization regimens were used, granulocyte-colony-stimulating factor (G-CSF) alone (n=13), cyclophosphamide 1-2 g/m2 plus G-CSF (LD-CY, n=62) and cyclophosphamide 3-4 g/m2 and G-CSF (ID-CY, n=47). Results: Using multivariate analysis, age, LY-C, ALC on day 30 (ALC-30) and International Staging System stage significantly influenced overall (OS) and progression-free survival (PFS) following ASCT. PFS (56 versus 29 months, P=0.05) and OS (72 versus 49 months; P=0.07) were longer in the LY-C≥0.12×109/kg group than the LY-C×0.12×109/kg group. LY-C also influenced ALC on day 15 (ALC-15). Mobilization regimen, lymphocytes on the day of leukapheresis, prior radiotherapy and number of leukaphereses significantly influenced LY-C. Significantly higher LY-C was obtained with G-CSF alone compared with the LD-CY and ID-CY groups. CD34+ count on the day of leukapheresis, prior chemotherapy with prednisone, cyclophosphamide, adriamycin and BCNU or melphalan, and stem cell mobilization regimen significantly influenced CD34+ cell yield. Discussion: LY-C influenced ALC-15 and survival following ASCT. Factors that influenced CD34+ cell yield and LY-C during leukapheresis were different. Mobilization should be tailored to maximize the LY-C and CD34+ cell yield.
Original language | English |
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Pages (from-to) | 507-517 |
Number of pages | 11 |
Journal | Cytotherapy |
Volume | 10 |
Issue number | 5 |
DOIs | |
Publication status | Published or Issued - 2008 |
Externally published | Yes |
Keywords
- Autologous stem cell transplantation
- Lymphocyte collection
- Multiple myeloma
ASJC Scopus subject areas
- Immunology and Allergy
- Immunology
- Oncology
- Genetics(clinical)
- Cell Biology
- Cancer Research
- Transplantation