期刊
CANCER GENETICS AND CYTOGENETICS
卷 126, 期 2, 页码 139-146出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/S0165-4608(00)00406-4
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Four cases with a segmental amplification of 11q23 region were detected by FISH. The amplification was either contiguous amplification on chromosome Il, or multiple markers involving the 11q23 region. The markers were derivative chromosomes, or isochromosomes. Amplification of 11q23 region was associated with complex karyotypes at the time of diagnosis or following treatment in secondary leukemias. Three were AML cases belonging to either AML-M5a or AML-1 subtypes and one was a myeloproliferative disorder. These cases were resistant to treatment. Conventional cytogenetic analysis and fluorescence in situ hybridization (FISH) studies using MLL, II painting, or 11 centromere probes ascertained the segmental amplification. Since the patients did not respond to treatment the amplification of gene or genes that map to 11q23 may be responsible for the unfavorable prognosis. Hence, this type of amplifications could have clinical significance. (C) 2001 Elsevier Science Inc. All rights reserved.
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