International Journal of Hematology

, Volume 76, Issue 2, pp 180–185 | Cite as

Detection of the BCR-ABL Gene by Interphase Fluorescence In Situ Hybridization (iFISH) in Chronic Myelogenous Leukemia Patients after Hemopoietic Stem Cell Transplantation: The Feasibility of iFISH Monitoring of Therapeutic Response in Peripheral Blood

  • You Kyoung Lee
  • Dong Wha Lee
  • Yoo Li Kim
  • Seok Lee
  • Chang Ki Min
  • Yoo-Jin Kim
  • Il-Hoan Oh
  • Tai-Gyu Kim
  • Chun Choo Kim
  • Dong-Wook Kim
Case Report


The detection of the Philadelphia (Ph) translocation has been accomplished primarily by cytogenetic analysis and reverse transcriptase polymerase chain reaction (RT-PCR). RT-PCR is highly sensitive (1/104-106) but not quantitatively reliable and is thus unsuitable for the monitoring of Ph-positive cells during therapy. Interphase fluorescence in situ hybridization (iFISH) allows analysis of a large number of cells (>500) in a timely and efficiently quantitative manner. We obtained 118 peripheral blood (PB) and 127 bone marrow (BM) samples from 75 adult chronic myelogenous leukemia (CML) patients undergoing stem cell transplantation. We simultaneously performed nested RT-PCR and iFISH for all samples. False-positive cells were detected in 2.48% ± 0.93% (mean ± SD) of PB samples and 2.75% ± 0.83% of BM samples. The iFISH results for PB and BM ranged from 1.4% to 92.8% and 1.0% to 93.8%, respectively. Correlation analysis of iFISH results for PB versus BM samples showed a strong relation (r = .993). A significant correlation (P < .05) was also found between iFISH and first-round RT-PCR. The sensitivity of BCR-ABL iFISH was similar to that of first-round RT-PCR, and iFISH results for PB and BM were also well correlated. Thus, iFISH analysis of PB and/or BM samples may be more clinically reliable than RT-PCR in the quantitative monitoring of BCR-ABL fusion in CML after transplantation.

Key words

Chronic myelogenous leukemia Interphase FISH BCR-ABL Hemopoietic stem cell transplantation 


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Copyright information

© The Japanese Society of Hematology 2002

Authors and Affiliations

  • You Kyoung Lee
    • 1
  • Dong Wha Lee
    • 1
  • Yoo Li Kim
    • 2
  • Seok Lee
    • 2
  • Chang Ki Min
    • 2
  • Yoo-Jin Kim
    • 2
  • Il-Hoan Oh
    • 2
  • Tai-Gyu Kim
    • 2
  • Chun Choo Kim
    • 2
  • Dong-Wook Kim
    • 2
  1. 1.Department of Clinical Pathology, College of MedicineSoonchunhyang UniversitySeoulKorea
  2. 2.Department of Catholic Hemopoietic Stem Cell Transplantation CenterSt. Mary’s Hospital, The Catholic University of KoreaSeoulKorea

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