PMID- 10469455 OWN - NLM STAT- MEDLINE DCOM- 20000107 LR - 20190816 IS - 1045-2257 (Print) IS - 1045-2257 (Linking) VI - 26 IP - 2 DP - 1999 Oct TI - Amplification of the 11q23 region in acute myeloid leukemia. PG - 166-70 AB - Cytogenetic abnormalities involving the 11q23 region are found in both acute lymphoblastic leukemia (ALL) and myeloid leukemia (AML). Molecular consequences of 11q23 translocations are the formation of chimeric genes, all of them involving the MLL (mixed-lineage leukemia) gene. To evaluate the usefulness of fluorescence in situ hybridization (FISH) in detecting MLL rearrangements in AML, we analyzed 181 patients with an MLL-specific probe. Among them, we detected three patients with multiple FISH signals, reflecting genomic amplification of this chromosomal region. Extra copies of MLL have been reported previously in four patients, but did not correspond to a true gene amplification. For the first time, we describe genomic amplification of the 11q23 region (up to more than 50 copies) in AML patients. This genomic amplification could affect MLL, but other genes in the vicinity could also be the primary target. Genes Chromosomes Cancer 26:166-170, 1999. CI - Copyright 1999 Wiley-Liss, Inc. FAU - Avet-Loiseau, H AU - Avet-Loiseau H AD - Laboratory of Hematology, University Hospital, Nantes, France. havetloiseau@chu-nantes.fr FAU - Godon, C AU - Godon C FAU - Li, J Y AU - Li JY FAU - Daviet, A AU - Daviet A FAU - Mellerin, M P AU - Mellerin MP FAU - Talmant, P AU - Talmant P FAU - Harousseau, J L AU - Harousseau JL FAU - Bataille, R AU - Bataille R LA - eng PT - Journal Article PL - United States TA - Genes Chromosomes Cancer JT - Genes, chromosomes & cancer JID - 9007329 RN - 0 (DNA, Neoplasm) RN - 0 (DNA-Binding Proteins) RN - 0 (KMT2A protein, human) RN - 0 (Transcription Factors) RN - 149025-06-9 (Myeloid-Lymphoid Leukemia Protein) RN - EC 2.1.1.43 (Histone-Lysine N-Methyltransferase) SB - IM MH - Aged MH - Bone Marrow/chemistry MH - Chromosomes, Human, Pair 11/*genetics MH - DNA, Neoplasm/isolation & purification MH - DNA-Binding Proteins/genetics MH - Female MH - Gene Amplification/*genetics MH - Histone-Lysine N-Methyltransferase MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Leukemia, Myeloid, Acute/*genetics MH - Male MH - Middle Aged MH - Myeloid-Lymphoid Leukemia Protein MH - *Proto-Oncogenes MH - *Transcription Factors MH - Translocation, Genetic MH - Zinc Fingers/genetics EDAT- 1999/09/01 00:00 MHDA- 1999/09/01 00:01 CRDT- 1999/09/01 00:00 PHST- 1999/09/01 00:00 [pubmed] PHST- 1999/09/01 00:01 [medline] PHST- 1999/09/01 00:00 [entrez] AID - 10.1002/(SICI)1098-2264(199910)26:2<166::AID-GCC9>3.0.CO;2-P [pii] PST - ppublish SO - Genes Chromosomes Cancer. 1999 Oct;26(2):166-70.