International Journal of Hematology

, Volume 85, Issue 5, pp 430–436 | Cite as

Interphase Fluorescence In Situ Hybridization Detection of Cytogenetic Abnormalities in B-Cell Chronic Lymphocytic Leukemia

  • Wei Xu
  • Jian-Yong Li
  • Jin-Lan Pan
  • Hai-Rong Qiu
  • Yun-Feng Shen
  • Li Li
  • Ya-Fang Wu
  • Yong-Quan Xue


The most frequent chromosomal abnormalities in B-cell chronic lymphocytic leukemia (B-CLL) are deletions on 13q14 and 17p13, trisomy 12, and 14q32 rearrangement. Conventional cytogenetic analysis underestimates the frequency of specific chromosome aberrations in B-CLL because of the low rate of spontaneous mitoses and the poor response to mitogen stimulation. We used interphase fluorescence in situ hybridization (I-FISH) to explore the incidence of chromosomal changes in the peripheral blood cells of B-CLL patients. Probes for 13q14 (D13S319), 17p13 (p53), the centromere of chromosome 12 (CEP12), and 14q32 (IGHC/IGHV) were applied to detect chromosomal aberrations in peripheral blood samples from 83 B-CLL patients (60 men, 23 women). Molecular cytogenetic aberrations were found in 61 cases (73.5%), and 8 patients (9.6%) showed 2 kinds of abnormalities. The most frequent abnormality was deletion of 13q14 (41.0%), followed by +12 (19.3%), deletion of 17p13 (12%), and 14q32 rearrangement (9.6%). FISH results were analyzed for correlation with Binet stages. The percentages of patients who showed abnormalities by FISH were 73.0%, 73.3%, and 80% for Binet stages A, B, and C, respectively, and the percentages of patients with abnormalities who showed 2 anomalies were 7.9%, 27.3%, and 0% for Binet stages A, B, and C, respectively. We noted no consistent pattern among the various Binet stages in the distribution of either the types of FISH-detected anomalies or the numbers of FISH anomalies. I-FISH was found to be a rapid, exact, and sensitive technique for analysis of chromosome aberrations in CLL. FISH could provide accurate information regarding the molecular cytogenetic features of CLL.

Key words

Chronic lymphocytic leukemia Fluorescence in situ hybridization Chromosome 


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Copyright information

© The Japanese Society of Hematology 2007

Authors and Affiliations

  • Wei Xu
    • 1
  • Jian-Yong Li
    • 1
  • Jin-Lan Pan
    • 2
  • Hai-Rong Qiu
    • 1
  • Yun-Feng Shen
    • 3
  • Li Li
    • 1
  • Ya-Fang Wu
    • 2
  • Yong-Quan Xue
    • 2
  1. 1.Department of Hematology1st Affiliated Hospital of Nanjing Medical University, Jiangsu Province HospitalNanjingChina
  2. 2.Jiangsu Institute of Hematology1st Affiliated Hospital of Soochow UniversitySuzhouChina
  3. 3.Department of Hematology1st Hospital of WuxiWuxiChina

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