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NPM1 mutations in myelodysplastic syndromes and acute myeloid leukemia with normal karyotype.

Zhang Y, Zhang M, Yang L, Xiao Z

State Key Laboratory of Experiment Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 288 Nanjing Road, Tianjin 300020, PR China.

Mutations at exon 12 of the nucleophosmin (NPM1) gene are the most frequent acquired molecular abnormalities in adult and pediatric acute myeloid leukaemia (AML) with normal karyotype. We screened 28 patients with new diagnosed primary AML with normal karyotype, 38 patients with myelodysplastic symdromes (MDS) and 19 healthy volunteer for mutations at exon 12 of NPM1 gene. NPM1 mutations were identified in four AML patients and two MDS patients, including one novel sequence variant. As far as we know, this is the first report of NPM1 mutation in patients with MDS in the English literature until now, and our primary data support that NPM1 mutations may be also involved in the pathogenesis of MDS.

Published 19 November 2006 in Leuk Res, 31(1): 109-11.
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