Article ; Online: Rearrangement of VPS13B, a causative gene of Cohen syndrome, in a case of RUNX1-RUNX1T1 leukemia with t(8;12;21).
International journal of hematology
2017 Volume 108, Issue 2, Page(s) 208–212
Abstract: Variant chromosomal translocations associated with t(8;21) are observed in 3-4 ... of t(8;21) are not well characterized. In the present study, we report genetic features of a variant ... three-way translocation of t(8;12;21)(q22;p11;q22) in a patient with AML. In this patient, leukemia ...
Abstract | Variant chromosomal translocations associated with t(8;21) are observed in 3-4% of acute myeloid leukemia (AML) cases with a RUNX1-RUNX1T1 fusion gene. However, the molecular events that occur in variants of t(8;21) are not well characterized. In the present study, we report genetic features of a variant three-way translocation of t(8;12;21)(q22;p11;q22) in a patient with AML. In this patient, leukemia cells lacked azurophilic granules, which does not correspond with the classic features of t(8;21). RNA-seq analysis revealed that TM7SF3 at 12p11 was fused to VPS13B at 8q22 and VPS13B to RUNX1, in addition to RUNX1-RUNX1T1. VPS13B was located near RUNX1T1 and both were localized at the same chromosomal bands. The reading frames of TM7SF3 and VPS13B did not match to those of VPS13B and RUNX1, respectively. Disruption of VPS13B causes Cohen syndrome, which presents intermittent neutropenia with a left-shifted granulopoiesis in the bone marrow. Disruption of VPS13B may thus cause the unusual features of RUNX1-RUNX1T1 leukemia. Our case indicates that rearrangement of VPS13B may be additional genetic events in variant t(8;21). |
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MeSH term(s) | Chromosomes, Human, Pair 12/genetics ; Chromosomes, Human, Pair 21/genetics ; Chromosomes, Human, Pair 8/genetics ; Core Binding Factor Alpha 2 Subunit/genetics ; Developmental Disabilities/genetics ; Female ; Fingers/abnormalities ; Gene Rearrangement/genetics ; Humans ; Intellectual Disability/genetics ; Leukemia, Myeloid, Acute/genetics ; Microcephaly/genetics ; Middle Aged ; Muscle Hypotonia/genetics ; Myopia/genetics ; Obesity/genetics ; RUNX1 Translocation Partner 1 Protein/genetics ; Translocation, Genetic/genetics ; Vesicular Transport Proteins/genetics |
Chemical Substances | Core Binding Factor Alpha 2 Subunit ; RUNX1 Translocation Partner 1 Protein ; RUNX1 protein, human ; RUNX1T1 protein, human ; VPS13B protein, human ; Vesicular Transport Proteins |
Language | English |
Publishing date | 2017-12-20 |
Publishing country | Japan |
Document type | Case Reports ; Journal Article |
ZDB-ID | 1076875-0 |
ISSN | 1865-3774 ; 0917-1258 ; 0925-5710 |
ISSN (online) | 1865-3774 |
ISSN | 0917-1258 ; 0925-5710 |
DOI | 10.1007/s12185-017-2387-x |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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