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Anticancer Res. 2005 Jul-Aug;25(4):2979-83.

Impact of cytogenetic and molecular cytogenetic studies on hematologic malignancies.

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  • 1Medical Genetics, University of Athens School of Medicine, Athens, Greece.


Conventional cytogenetic analysis of chromosome abnormalities in hematologic malignancies is hampered by the low mitotic index and poor quality of metaphases. A range of techniques based on fluorescence in situ hybridization (FISH) has greatly enhanced the identification of non-random translocations and deletions, pinpointing regions which contain genes involved in leukemogenesis. One of the main advantages of FISH is its ability to use non-dividing interphase cells as DNA targets, enabling the screening of large numbers of cells and providing access to a variety of cells with different hematopoetic activity. Furthermore, multicolor FISH (SKY, M-FISH and CGH microarrays) combines the screening potential of cytogenetics with the accuracy of molecular genetics, allowing the visualization of the entire human genome in 24 different colors.

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