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Correlation Between Survival and Number of Mobilized CD34+ Cells in Patients with Multiple Myeloma or Waldenström Macroglobulinemia

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Pathology & Oncology Research

Abstract

High-dose chemotherapy followed by autologous stem cell transplantation is the established treatment for symptomatic multiple myeloma (MM) or Waldenström macroglobulinemia (WM). We retrospectively analyzed the impact of mobilized CD34+ cell number on clinical outcomes in patients with MM or WM who underwent autologous stem cell transplantation in our hospital from 1997 to 2007. A total of 39 patients were identified. All patients received peripheral stem cell support after a conditioning regimen. We defined patients with collection of a large number (≥ 8 × 106/kg) of CD34+ cells as super mobilizers (SM), and all others as normal mobilizers (NM). Although hematological engraftment was earlier in the SM group, overall survival did not differ significantly between groups (P = 0.392). Likewise, no significant differences were seen in progression-free survival (P = 0.201) or survival after relapse (P = 0.330). In conclusion, our retrospective study could not find any correlation between survival and number of mobilized CD34+ cells, in contrast to previously reported results.

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Acknowledgments

This study was supported in part by a grant for clinical cancer research from the Ministry of Health, Labor and Welfare of Japan. We would like to thank the staff of the Hematology Division at Tokyo Metropolitan Cancer and the Infectious Diseases Center, Komagome Hospital, for their excellent patient care.

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Correspondence to Kazuteru Ohashi.

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Kakihana, K., Ohashi, K., Akiyama, H. et al. Correlation Between Survival and Number of Mobilized CD34+ Cells in Patients with Multiple Myeloma or Waldenström Macroglobulinemia. Pathol. Oncol. Res. 16, 583–587 (2010). https://doi.org/10.1007/s12253-009-9238-x

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  • DOI: https://doi.org/10.1007/s12253-009-9238-x

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