Simultaneous deletion of 3'ETV6 and 5'EWSR1 genes in blastic plasmacytoid dendritic cell neoplasm: case report and literature review.
Mol Cytogenet 2016;
9:23. [PMID:
26925167 PMCID:
PMC4769509 DOI:
10.1186/s13039-016-0232-1]
[Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 02/22/2016] [Indexed: 12/11/2022] Open
Abstract
Background
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare hematologic malignancy. Based on literature reports of limited cases, over 50 % of BPDCN have chromosomal abnormalities, but no single chromosomal change has been identified as diagnostic of this entity.
Case presentation
In this report, we present a case of BPDCN with complicated chromosomal abnormalities involving chromosomes 12 and 22 and resulting in a simultaneous partial deletion of ETV6 and EWSR1. Notably, these aberrations were identified in bone marrow myeloid precursors in the absence of bone marrow involvement by BPDCN.
Conclusion
Analysis of 46 BPDCN cases with abnormal karyotypes (45 from literature reports plus this case) showed that 12p- is one of the most common structural aberrations in BPDCN. The ETV6 and CDKN1B on 12p deserve further investigations as potential markers of BPDCN.
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