Progenitor cell involvement is predictive of response to induction chemotherapy in paediatric acute myeloid leukaemia.
Br J Haematol
; 123(3): 431-5, 2003 Nov.
Article
en En
| MEDLINE
| ID: mdl-14617001
ABSTRACT
In acute myeloid leukaemia (AML), involvement of early progenitor cells may predict poor response to induction chemotherapy. We evaluated the involvement of early progenitor cells in two AML subtypes with a favourable prognosis [t(8;21) and t(15;17)], and a subtype with poor prognosis (monosomy 7). CD34+CD33- cells were isolated by fluorescence-activated cell sorting, grown in liquid medium followed by culture in semi-solid medium, and the colonies that were formed were analysed for the identifiable genetic markers. Two of 136 colonies from six t(8;21) AML patients expressed the AML1-ETO transcript, and all six patients achieved remission after induction. None of 192 colonies from five t(15;17) AML patients expressed the RARalpha-PML transcript and all achieved remission. In contrast, in three of 10 cases of monosomy 7 AML, colonies were positive for monosomy 7, and all three patients failed to enter remission. However, five of six evaluable patients with colonies negative for monosomy 7 entered remission. These data support the hypothesis that leukaemic involvement of early progenitor cells affects the response to induction chemotherapy.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Células Madre
/
Leucemia Mieloide
/
Aberraciones Cromosómicas
Tipo de estudio:
Prognostic_studies
/
Risk_factors_studies
Límite:
Child
/
Humans
Idioma:
En
Revista:
Br J Haematol
Año:
2003
Tipo del documento:
Article
País de afiliación:
Estados Unidos