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  • Title: [Detection of bcr/abl fusion gene and its derivative chromosome 9 deletions in CML by using home-made bcr/abl extra-signal probe].
    Author: Lai YY, Feng L, Wang Z, Lü S, Dang H, Shi Y, He Q, Huang XJ.
    Journal: Zhongguo Shi Yan Xue Ye Xue Za Zhi; 2010 Feb; 18(1):199-203. PubMed ID: 20137147.
    Abstract:
    This study was aimed to verify the efficacy of home-made LSI bcr/abl ES probe for detection of bcr/abl fusion gene and derivative chromosome 9 deletions in chronic myeloid leukemia (CML). Fluorescence in situ hybridization (FISH) was carried out with dual color bcr/abl extra signal (ES) probe in 97 cases of CML based on morphology and cytogenetic karyotype and 129 cases of non-hematological malignancies/non-myeloproliferative diseases with normal cytogenetic karyotype. For the patients with signals of 1R1G1F indicating der(9) deletions, FISH were done using ASS DNA probe. The results showed that 91 cases with standard t(9;22) and 6 cases with variant translocation of t(9;22) were detected by conventional G banding technique. All of the 97 patients displayed bcr/abl fusion gene by ES-FISH, including 16 cases with signal patterns of 1R1G1F showing der(9) deletions. Among the 16 cases with der(9) deletions, 13 cases were detected to have deletions of ASS gene. Meanwhile, none of the 129 cases of negative control showed bcr/abl fusion gene by ES-FISH. It is concluded that home-made LSI bcr/abl ES probe is effective to identify the bcr/abl fusion gene and der(9) deletions in CML, and the ES-FISH results are consistent with conventional cytogenetic karyotype.
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