Abstract:
:We describe the development of acute myeloid leukemia (AML) in an adult with CBL syndrome caused by a heterozygous de novo germline mutation in CBL codon D390. In the AML bone marrow, the mutated CBL allele was homozygous after copy number-neutral loss-of-heterozygosity and amplified through a chromosomal gain; moreover, an inv(16)(p13q22) and, as assessed by whole-exome sequencing, 12 gene mutations (eg, in CAND1, NID2, PTPRT, DOCK6) were additionally acquired. During complete remission of the AML, in the presence of normal blood counts, the hematopoiesis stably maintained the homozygous CBL mutation, which is reminiscent of the situation in children with CBL syndrome and transient juvenile myelomonocytic leukemia. No additional mutations were identified by whole-exome sequencing in granulocytes during complete remission. The study highlights the development of AML in an adult with CBL syndrome and, more generally, in genetically aberrant but clinically inconspicuous hematopoiesis.
journal_name
Bloodjournal_title
Bloodauthors
Becker H,Yoshida K,Blagitko-Dorfs N,Claus R,Pantic M,Abdelkarim M,Niemöller C,Greil C,Hackanson B,Shiraishi Y,Chiba K,Tanaka H,Miyano S,Döhner K,Schnittger S,Henneke P,Niemeyer CM,Flotho C,Pfeifer D,Ogawa S,Lübberdoi
10.1182/blood-2013-10-533844subject
Has Abstractpub_date
2014-03-20 00:00:00pages
1883-6issue
12eissn
0006-4971issn
1528-0020pii
blood-2013-10-533844journal_volume
123pub_type
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