Blood, 15 May 2002, Vol. 99, No. 10, pp. 3848-3850
BRIEF REPORT
Unlike AML1, CBF
gene
is not deregulated by point mutations in acute myeloid leukemia and in
myelodysplastic syndromes
Hugues Leroy,
Christophe Roumier,
Nathalie Grardel-Duflos,
Elizabeth Macintyre,
Pascale Lepelley,
Pierre Fenaux, and
Claude Preudhomme
From the Laboratoire d'Hématologie A,
Hôpital Calmette, and Service des Maladies du Sang, CHU Lille;
Unité 524 INSERM, Institut de Recherche sur le Cancer de Lille;
and Laboratoire d'Hématologie, Hôpital Necker enfants
malades, Paris, France.
The core-binding factor (CBF) complex is a heterodimeric
transcription factor composed of 2 subunits, CBF
and CBF
, that play a major role in hematopoiesis. Both members of the CBF complex are
frequently altered in acute myeloid leukemia (AML) by translocation, most commonly t(8;21), t(12;21), and t(3;21) for CBF
, located in
21q22, and inv16(p13;q22) for CBF
, located on
16q22. Recently, a new mechanism of alteration of CBF
, by point
mutation, has been reported in myeloid malignancies, particularly in
M0 AML. In the present study, we found no point mutation of the
CBF
gene in 30 myelodysplastic syndromes and 100 AMLs, suggesting a limited role, if any, of CBF
point mutations in
those disorders.