PMID- 26214902 OWN - NLM STAT- MEDLINE DCOM- 20150810 LR - 20190816 IS - 0564-3783 (Print) IS - 0564-3783 (Linking) VI - 49 IP - 3 DP - 2015 May-Jun TI - IS THE AMPLIFICATION OF c-MYC, MLL AND RUNX1 GENES IN AML AND MDS PATIENTS WITH TRISOMY 8, 11 AND 21 A FACTOR FOR A CLONAL EVOLUTION IN THEIR KARYOTYPE? PG - 25-32 AB - The aim of our study was 1) to define if the amplification of c-MYC, MLL and RUNX1 genes is related to the progressive changes of the karyotype in patients with AML and MDS with trisomy 8, 11 and 21 (+8, +11 and +21) in bone marrow and 2) can that amplification be accepted as part of the clonal evolution (CE). Karyotype analysis was performed in 179 patients with AML or MDS with the different chromosomal aberrations (CA) aged 16-81. The findings were distributed as follow: initiating balanced CA (n = 60), aneuploidia (n = 55), unbalanced CA (n = 64). Amplification of c-MYC, MLL and RUNX1 genes by means of fluorescence in situ hybridization (FISH) was found in 35% (7 out of 20) of AML and MDS patients with +8, +11 u +21 as single CA in their karyotype; in 63.6% of pts (7 out of 11)--with additional numerical or structural CA and in 75% (9 out of 12)--with complex karyotype. We assume that the amplification of the respective chromosomal regions in patients with +8, +11 and +21 is related to CE. Considering the amplification as a factor of CE, we established 3 patterns of karyotype development depending on the type of the initiating CA in it. Significant statistical differences were found between the three patterns regarding the karyotype distribution in the different stages of progression (p < 0.001). FAU - Angelova, S AU - Angelova S FAU - Spassov, B AU - Spassov B FAU - Nikolova, V AU - Nikolova V FAU - Christov, I AU - Christov I FAU - Tzvetkov, N AU - Tzvetkov N FAU - Simeonova, M AU - Simeonova M LA - eng PT - Journal Article PL - Ukraine TA - Tsitol Genet JT - TSitologiia i genetika JID - 0101671 RN - 0 (Core Binding Factor Alpha 2 Subunit) RN - 0 (KMT2A protein, human) RN - 0 (Proto-Oncogene Proteins c-myc) RN - 0 (RUNX1 protein, human) RN - 149025-06-9 (Myeloid-Lymphoid Leukemia Protein) RN - EC 2.1.1.43 (Histone-Lysine N-Methyltransferase) RN - Chromosome 11q trisomy RN - Chromosome 8, trisomy SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Bone Marrow/metabolism/pathology MH - Chromosomes, Human, Pair 11 MH - Chromosomes, Human, Pair 8 MH - Clonal Evolution MH - Core Binding Factor Alpha 2 Subunit/*genetics MH - Disease Progression MH - *Down Syndrome MH - Female MH - Gene Dosage MH - Histone-Lysine N-Methyltransferase/*genetics MH - Humans MH - Karyotype MH - Karyotyping MH - Leukemia, Myeloid, Acute/*genetics/pathology MH - Male MH - Middle Aged MH - Myelodysplastic Syndromes/*genetics/pathology MH - Myeloid-Lymphoid Leukemia Protein/*genetics MH - Proto-Oncogene Proteins c-myc/*genetics MH - *Trisomy EDAT- 2015/07/29 06:00 MHDA- 2015/08/11 06:00 CRDT- 2015/07/29 06:00 PHST- 2015/07/29 06:00 [entrez] PHST- 2015/07/29 06:00 [pubmed] PHST- 2015/08/11 06:00 [medline] PST - ppublish SO - Tsitol Genet. 2015 May-Jun;49(3):25-32.