Volume 134, Issue 6 pp. 616-619

Identification of additional cytogenetic and molecular genetic abnormalities in acute myeloid leukaemia with t(8;21)/AML1-ETO

F. Kuchenbauer

F. Kuchenbauer

GSF – Clinical Cooperative Group ‘Leukemia’, Munich

Department of Medicine III, Grosshadern, Ludwig-Maximilians University, Munich

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S. Schnittger

S. Schnittger

MLL – Munich Leukemia Laboratory, Munich, Germany

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T. Look

T. Look

Department of Pediatric Oncology, Dana-Farber Cancer Institute

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G. Gilliland

G. Gilliland

Department of Hematology and Oncology, Brigham and Women‘s Hospital and Harvard Medical School

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D. Tenen

D. Tenen

Harvard Institutes of Medicine, Harvard Medical School, Boston, MA, USA

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T. Haferlach

T. Haferlach

MLL – Munich Leukemia Laboratory, Munich, Germany

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W. Hiddemann

W. Hiddemann

GSF – Clinical Cooperative Group ‘Leukemia’, Munich

Department of Medicine III, Grosshadern, Ludwig-Maximilians University, Munich

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C. Buske

C. Buske

GSF – Clinical Cooperative Group ‘Leukemia’, Munich

Department of Medicine III, Grosshadern, Ludwig-Maximilians University, Munich

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C. Schoch

C. Schoch

MLL – Munich Leukemia Laboratory, Munich, Germany

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First published: 18 August 2006
Citations: 50
Florian Kuchenbauer, MD, Terry Fox Laboratories, 675 West 10th Ave, Vancouver, BC, Canada, V5Z1L3.
E-mail: [email protected]

Abstract

AML1-ETO collaborates with further genetic abnormalities to induce acute myeloid leukaemia (AML). We analysed 99 patients with an AML1-ETO rearrangement for additional aberrations. Frequent genetic abnormalities were, loss of a sex chromosome (56/99, 56·5%) and del(9)(q22) (24/99, 24·2%). The most frequent molecular aberrations were mutations of KITD816 (3/23, 13%) and NRAS (8/89, 8·9%). Further molecular abnormalities were FLT3 mutations (3/87, 3·4%), AML1 (1/26, 3·8%) and PU1 (1/14, 7·1%). MLL-PTD, KRAS and CEBPA mutations were not found. These clinical findings support the model that AML1-ETO collaborates with other genetic alterations, such as mutations of receptor tyrosine kinases, to induce AML.

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