PMID- 12759925 OWN - NLM STAT- MEDLINE DCOM- 20030728 LR - 20061115 IS - 1045-2257 (Print) IS - 1045-2257 (Linking) VI - 37 IP - 3 DP - 2003 Jul TI - Cytogenetic, spectral karyotyping, fluorescence in situ hybridization, and comparative genomic hybridization characterization of two new secondary leukemia cell lines with 5q deletions, and MYC and MLL amplification. PG - 270-81 AB - Cytogenetic studies of patients with therapy-induced acute myeloid leukemia (t-AML) have demonstrated whole chromosome loss or q-arm deletion of chromosomes 5 and/or 7 in a majority of cases. We have established two cell lines, SAML-1 and SAML-2, from two patients who developed t-AML after radiation and chemotherapy for Hodgkin disease. In both cases, the leukemia cells contained 5q deletions. SAML-1 has 58 chromosomes and numerous abnormalities, including der(1)(1qter-->1p22::5q31-->5qter), der(5)(5pter-->5q22::1p22-->1pter), +8, der(13)i(13)(q10)del(13)(q11q14.1), and t(10;11). Fluorescence in situ hybridization (FISH) with unique sequence probes for the 5q31 region showed loss of IL4, IL5, IRF1, and IL3, and translocation of IL9, DS5S89, EGR1, and CSFIR to 1p. SAML-2 has 45 chromosomes, del(5)(q11.2q31) with a t(12;13)ins(12;5), leading to the proximity of IRF1 and RB1, and complex translocations of chromosomes 8 and 11, resulting in amplification of MYC and MLL. Comparative genomic hybridization and spectral karyotyping were consistent with the G-banding karyotype and FISH analyses. Because a potential tumor suppressor(s) in the 5q31 region has yet to be identified, these cell lines should prove useful in the study of the mechanisms leading to the development of t-AML. CI - Copyright 2003 Wiley-Liss, Inc. FAU - Knutsen, Turid AU - Knutsen T AD - Genetics Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA. knutsent@mail.nih.gov FAU - Pack, Svetlana AU - Pack S FAU - Petropavlovskaja, Maria AU - Petropavlovskaja M FAU - Padilla-Nash, Hesed AU - Padilla-Nash H FAU - Knight, Clement AU - Knight C FAU - Mickley, Lyn A AU - Mickley LA FAU - Ried, Thomas AU - Ried T FAU - Elwood, Patrick C AU - Elwood PC FAU - Roberts, Susan J AU - Roberts SJ LA - eng PT - Comparative Study PT - Journal Article PL - United States TA - Genes Chromosomes Cancer JT - Genes, chromosomes & cancer JID - 9007329 SB - IM EIN - Genes Chromosomes Cancer. 2003 Jul;37(3):332 MH - Acute Disease MH - Adult MH - Chromosome Banding MH - Chromosome Painting MH - *Cytogenetic Analysis MH - Hodgkin Disease/*complications/drug therapy/radiotherapy MH - Humans MH - *In Situ Hybridization, Fluorescence MH - Karyotyping/methods MH - Leukemia, Myeloid/complications/*genetics MH - Leukemia, Radiation-Induced/*genetics MH - Male MH - Middle Aged MH - Nucleic Acid Hybridization/methods MH - Phenotype MH - Tumor Cells, Cultured EDAT- 2003/05/22 05:00 MHDA- 2003/07/29 05:00 CRDT- 2003/05/22 05:00 PHST- 2003/05/22 05:00 [pubmed] PHST- 2003/07/29 05:00 [medline] PHST- 2003/05/22 05:00 [entrez] AID - 10.1002/gcc.10200 [doi] PST - ppublish SO - Genes Chromosomes Cancer. 2003 Jul;37(3):270-81. doi: 10.1002/gcc.10200.