Evidence map›Paper›PMID 41419969›Full record

ArticleMolecular cytogenetics2025

Optical genome mapping identifies novel ENOX2::RUNX1 t(X;21)(q26.1;q22.12) rearrangement in acute myeloid leukemia-myelodysplasia related: first case report.

Giby V George, Sarmad Ali, Chauncey R Syposs, M Anwar Iqbal

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Article in Molecular cytogenetics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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2citing papers in PubMed
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3 · Its place in the literature

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2 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Giby V George *Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, 14642, USA.
Sarmad Ali *DNA Microarray CGH Laboratory , University of Rochester Medical Center, URMC Central Laboratory, 211 Bailey Road, Box 278846, West Henrietta, NY, 14586, USA.
Chauncey R SypossDepartment of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, 14642, USA.
M Anwar IqbalDepartment of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, 14642, USA. Anwar_Iqbal@urmc.rochester.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAcute myeloid leukemia-myelodysplasia related (AML-MR) is a biologically and clinically distinct subtype of AML that arises in the context of prior dysplasia. It is characterized by adverse cytogenetics and poor prognosis compared to other AML subtypes. Several genetic mechanisms underpin the pathogenesis of AML-MR; however, additional findings are likely to come to light over time with advanced genomic technologies, enhancing our understanding of their evolution. This report details a case of AML-MR involving unreported gene fusion. CASE PRESENTATION: A 59-year-old female with multiple comorbidities presented with slurred speech. Pathological evaluation and DNA-based next-generation sequencing results were consistent with AML-MR. AML fluorescence in situ hybridization (FISH) panel revealed an extra signal for RUNX1. G-banding karyotype revealed a solitary rare t(X;21)(q26.1;q22.12) in 18 out of 20 cells analyzed. Optical genome mapping (OGM) was performed to precisely localize the breakpoints and identify the specific genes or gene fusions created by the translocation. OGM identified a novel fusion involving ENOX2 (Xq26.1) and RUNX1 (21q22.12), which was subsequently confirmed by a retrospective custom FISH probe targeting ENOX2.

conclusionsThe identification of an ENOX2::RUNX1 fusion in AML-MR expands the spectrum of rare RUNX1 fusions. High-resolution approaches such as OGM enable precise delineation of fusion partners and breakpoints beyond the resolution of conventional cytogenetics. While the biological and clinical significance of this fusion remains to be determined, this finding highlights the value of OGM in the identification of novel and rare genomic rearrangements in leukemia and other malignancies.

Indexed as

Acute myeloid leukemia-myelodysplasia relatedAML-MRENOX2:RUNX1Optical genome mapping, OGMt(X:21)(q26.1; q22.12)

Identifiers

PMID41419969
PMCPMC12831429

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