Hematopoietic progenitor cell collection in patients with chronic myelogenous leukemia in complete cytogenetic remission after imatinib mesylate therapy. Academic Article uri icon

Overview

abstract

  • The introduction of BCR-ABL tyrosine kinase inhibitors such as imatinib has changed the treatment of chronic myelogenous leukemia (CML). More than 75% of patients achieve complete cytogenetic remission (CCR) after treatment with imatinib, which provides an opportunity to collect minimally involved hematopoietic progenitor stem cell (HPC) products. In order to assess the feasibility of HPC collection in patients with CML, we prospectively enrolled 24 patients who achieved CCR on therapy with imatinib. Two patients could not undergo HPC collection because of coagulopathy. A CD34+ cell yield of > or =2.0 x 10(6)/kg body weight was obtained in 16/22 (73%) patients. Patients who stopped imatinib for at least 3 weeks prior to HPC collection had significantly higher CD34+ cell yields (median: 6.52 x 10(6)/kg body weight) when compared with patients who continued imatinib through the collection (median: 3.74 x 10(6)/kg body weight). Mobilization with granulocyte colony-stimulating factor (G-CSF) did not increase the levels of BCR-ABL transcript. With a mean follow-up of 46 months, all patients but one were in CCR. In conclusion, a significant number of CD34+ cells can be safely collected in patients with CML who are on imatinib therapy, but CD34+ cell yields improve when imatinib is temporarily withheld.

publication date

  • August 1, 2010

Research

keywords

  • Antineoplastic Agents
  • Hematopoietic Stem Cell Mobilization
  • Hematopoietic Stem Cells
  • Leukapheresis
  • Leukemia, Myelogenous, Chronic, BCR-ABL Positive
  • Piperazines
  • Pyrimidines

Identity

PubMed Central ID

  • PMC4188823

Scopus Document Identifier

  • 77955447196

Digital Object Identifier (DOI)

  • 10.3109/10428194.2010.501534

PubMed ID

  • 20658954

Additional Document Info

volume

  • 51

issue

  • 8