PMID- 20682391 OWN - NLM STAT- MEDLINE DCOM- 20100903 LR - 20151119 IS - 1873-4456 (Electronic) IS - 0165-4608 (Linking) VI - 201 IP - 2 DP - 2010 Sep TI - Cytogenetic and molecular characterization of double inversion 3 associated with a cryptic BCR-ABL1 rearrangement and additional genetic changes. PG - 81-7 LID - 10.1016/j.cancergencyto.2010.05.014 [doi] AB - Rearrangements of chromosome 3 involving bands 3q21 and 3q26 have been reported in about 2% of patients with acute myeloid leukemia, and rarely in myelodysplastic syndrome or chronic myelogenous leukemia (CML). To date, only six cases of inversion of both homologues have been reported. Loss of normal chromosome 3 and duplication of the inverted chromosome have been proposed as the most likely mechanism, but have not been shown experimentally. We present a 36-year-old male with an initial diagnosis of CML and resistance to imatinib mesylate. Chromosome analysis showed an inversion within the long arm of both homologues of chromosome 3 and an interstitial deletion within the long arm of one chromosome 7. The rearrangement of EVI1 locus on both homologues of chromosome 3 was confirmed by fluorescence in situ hybridization (FISH). Additional FISH studies showed a cryptic insertion of ABL1 into the BCR region, and subsequent duplication of the derivative chromosome 22. The single-nucleotide polymorphism array showed copy-neutral loss of heterozygosity on chromosomes 3 and 22, suggesting that a somatic repair mechanism is involved in the evolution of these genetic alterations. This case illustrates the complexity of genetic aberrations in neoplastic cells, and the value of array technology, used in concert with conventional cytogenetic methods, for a better understanding of the pathogenesis. CI - 2010 Elsevier Inc. All rights reserved. FAU - Toydemir, Reha AU - Toydemir R AD - Department of Pathology, University of Utah, Salt Lake City, 84112, USA. FAU - Rowe, Leslie AU - Rowe L FAU - Hibbard, Michele AU - Hibbard M FAU - Salama, Mohamed AU - Salama M FAU - Shetty, Shashirekha AU - Shetty S LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 RN - 0 (Benzamides) RN - 0 (Piperazines) RN - 0 (Pyrimidines) RN - 8A1O1M485B (Imatinib Mesylate) RN - EC 2.7.10.2 (Fusion Proteins, bcr-abl) SB - IM MH - Adult MH - Benzamides MH - Chromosome Aberrations MH - *Chromosome Inversion MH - Chromosomes, Human, Pair 22 MH - *Chromosomes, Human, Pair 3 MH - Chromosomes, Human, Pair 9 MH - Drug Resistance, Neoplasm MH - Fusion Proteins, bcr-abl/*genetics MH - Humans MH - Imatinib Mesylate MH - In Situ Hybridization, Fluorescence MH - Leukemia, Myelogenous, Chronic, BCR-ABL Positive/*genetics MH - Loss of Heterozygosity MH - Male MH - Piperazines/pharmacology MH - Polymorphism, Single Nucleotide MH - Pyrimidines/pharmacology EDAT- 2010/08/05 06:00 MHDA- 2010/09/04 06:00 CRDT- 2010/08/05 06:00 PHST- 2010/01/05 00:00 [received] PHST- 2010/05/19 00:00 [revised] PHST- 2010/05/19 00:00 [accepted] PHST- 2010/08/05 06:00 [entrez] PHST- 2010/08/05 06:00 [pubmed] PHST- 2010/09/04 06:00 [medline] AID - S0165-4608(10)00229-3 [pii] AID - 10.1016/j.cancergencyto.2010.05.014 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 2010 Sep;201(2):81-7. doi: 10.1016/j.cancergencyto.2010.05.014.