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Blood, 1 November 2001, Vol. 98, No. 9, pp. 2856-2858
BRIEF REPORT
A novel CBFA2 single-nucleotide mutation in familial
platelet disorder with propensity to develop myeloid
malignancies
Arjan Buijs,
Pino Poddighe,
Richard van
Wijk,
Wouter van Solinge,
Eric Borst,
Leo Verdonck,
Anton Hagenbeek,
Peter Pearson, and
Henk Lokhorst
From the Division of Medical Genetics and the
Departments of Hematology, Immunology, and Clinical Chemistry,
University Medical Center Utrecht, The Netherlands.
Hereditary mutations associated with hematologic malignancies are
rare. Heterozygous mutations affecting the hematopoietic transcription
factor CBFA2 (also AML1/RUNX1) were recently reported to be associated
with familial platelet disorder with predisposition to acute myeloid
leukemia (FPD/AML, MIM 601399). A new 3-generation family with FPD/AML
with a novel CBFA2 mutation is described. In this family,
AML was diagnosed in a second-generation male. After allogeneic stem
cell transplantation from his human leukocyte antigen-identical
sister, a donor-derived, genetically identical leukemia developed in
the recipient and the donor. Sequencing analysis identified a G-to-T
transition within the CBFA2 gene, which involves codon 198, encoding a conserved aspartic acid within the DNA- binding Runt domain.
Three of 5 siblings affected with the FPD/AML trait harbored the
mutation in a heterozygous form. This experience underscores the
necessity of performing mutation analysis of the CBFA2 gene
before sibling allogeneic transplantation in families with FPD/AML.

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