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  • Title: [Molecular genetics in chronic myeloid leukemia with variant Ph translocation].
    Author: Wu W, Li JY, Zhu Y, Qiu HR, Pan JL, Xu W, Chen LJ, Shen YF, Xue YQ.
    Journal: Zhonghua Yi Xue Yi Chuan Xue Za Zhi; 2007 Aug; 24(4):470-3. PubMed ID: 17680547.
    Abstract:
    OBJECTIVE: To explore the value of fluorescence in situ hybridization (FISH) and multiplex fluorescence in situ hybridization (M-FISH) techniques in the detection of genetic changes in chronic myeloid leukemia (CML) with variant Philadelphia translocation (vPh). METHODS: Cytogenetic preparations from 10 CML patients with vPh confirmed by R banding were assayed with dual color dual fusion FISH technique. If only one fusion signal was detected in interphase cells, metaphase cells were observed to determine if there were derivative chromosome 9[der (9)] deletions. Meanwhile, the same cytogenetic preparations were assayed with M-FISH technique. RESULTS: Of the 10 CML patients with vPh, 5 were detected with der (9) deletions by FISH technique. M-FISH technique revealed that besides the chromosome 22, chromosomes 1, 3, 5, 6, 8, 10, 11 and 17 were also involved in the vPh. M-FISH technique also detected the abnormalities which were not found with conventional cytogenetics (CC), including two never reported abnormalities. CONCLUSION: The combination of CC, FISH and M-FISH technique could refine the genetic diagnosis of CML with vPh.
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