Prognostic value of structural chromosomal rearrangements and small cell clones with high hyperdiploidy in children with acute lymphoblastic leukemia

. 2005 Mar ; 29 (3) : 273-81.

Jazyk angličtina Země Anglie, Velká Británie Médium print

Typ dokumentu srovnávací studie, časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/pmid15661262
Odkazy

PubMed 15661262
DOI 10.1016/j.leukres.2004.07.004
PII: S0145-2126(04)00249-8
Knihovny.cz E-zdroje

In this study, 107 children with acute lymphoblastic leukemia (ALL) were analysed for the presence of hyperdiploidy by cytogenetics and interphase fluorescence in situ hybridisation (I-FISH). Structural aberrations in hyperdiploid cells were investigated by multiple colour FISH (mFISH). Clones with high hyperdiploidy (>50 chromosomes) (HeH) were found in 46 patients (43%). In nine of these (20%), the abnormal clone was present in <20% of the total cell population. There was no significant difference in EFS between those patients with HeH in 2.5-20% or >20% of cells. Structural rearrangements in the HeH clone were found in 10 patients (22%). In this study, HeH karyotypes containing structural aberrations were an indication of a poor prognosis in childhood ALL.

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