High frequency of dicentric chromosomes detected by multi-centromeric FISH in patients with acute myeloid leukemia and complex karyotype
Language English Country England, Great Britain Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
29574397
DOI
10.1016/j.leukres.2018.03.009
PII: S0145-2126(18)30071-7
Knihovny.cz E-resources
- Keywords
- Acute myeloid leukemia, Centromere, Complex karyotype, Dicentric chromosomes, Fluorescence in situ hybridization,
- MeSH
- Leukemia, Myeloid, Acute genetics MeSH
- Survival Analysis MeSH
- Centromere * MeSH
- Chromosome Aberrations * MeSH
- In Situ Hybridization, Fluorescence methods MeSH
- Karyotype * MeSH
- Middle Aged MeSH
- Humans MeSH
- Chromosomes, Human, Pair 17 MeSH
- Chromosomes, Human, Pair 20 MeSH
- Monosomy MeSH
- Prognosis MeSH
- Chromosome Banding MeSH
- Aged MeSH
- Check Tag
- Middle Aged MeSH
- Humans MeSH
- Male MeSH
- Aged MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
Dicentric chromosomes (DCs) are considered markers of cancer in various malignancies. However, they can be overlooked when conventional analysis or multicolor fluorescence in situ hybridization (mFISH) is used to detect complex karyotypes. We analyzed the karyotypes of 114 patients with acute myeloid leukemia (AML) and complex karyotypes and verified the presence of monosomies by FISH using multi-centromeric probes. Monosomy was detected in 63% of patients by G-banding/mFISH and confirmed in 55% of patients by centromeric FISH. FISH analysis indicated a high frequency of DCs that were previously considered monosomies. In some cases, it was apparent that the derivative monocentric chromosome was a primary DC. DCs were formed mostly by chromosomes 17 and 20. In conclusion, chromosome loss and unbalanced translocation suggest the presence of a hidden DC or its previous existence. DCs undergo several stabilizing changes and can induce other chromosomal aberrations and/or the formation of new DCs. This can result in the clonal evolution of abnormal cells, which is considered an independent prognostic marker of an unfavorable disease course and short survival.
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