Peripheral Blood and Bone Marrow Findings in Treatment-Naive Patients With Cytopenia(s)/Myeloid Neoplasms Harboring Both a Germline and a Somatic DDX41 Mutation.

IF 1.3 4区 医学 Q3 ANATOMY & MORPHOLOGY
Frido K Bruehl, Ismail Elbaz Younes, David S Bosler, Katalin Kelemen, Liuyan Jiang, Kaaren K Reichard
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引用次数: 0

Abstract

DDX41 -associated cytopenia(s)/myeloid neoplasms ( DDX41 -C/MNs) are an emerging pathologic entity. We examined the hematopathologic findings in DDX41 -C/MNs with both a germline and somatic DDX41 mutation ( DDX41 -C/MNs-GS). We reviewed the peripheral blood and bone marrow (BM) findings from treatment-naive patients with DDX41 -C/MNs-GS. Thirty cases were identified: 10% (3/30) were classified as clonal cytopenia(s) of unknown significance (CCUS), 17% (5/30) as myelodysplastic neoplasm/syndrome (MDS) with <5% blasts, 20% (6/30) as MDS with 5% to 9% blasts, 20% (6/30) as MDS with 10% to 19% blasts, and 33% (10/30) as acute myeloid leukemia (AML). All patients were cytopenic; circulating blasts were rare (23%, 7/30). 63% (19/30) showed dysmegakaryopoiesis. Dyserythropoiesis and dysgranulopoiesis were uncommon; seen in 20% (6/30) and 7% (2/30), respectively. Sixty-six percent (19/29) of cases were normocellular; 43% (13/30) showed erythroid predominance. Flow cytometry revealed an unremarkable blast myeloid phenotype. Blasts were intermediate sized with round nuclei, distinct nucleoli, and light blue cytoplasm with azurophilic granules. The karyotype was predominantly normal (93%, 26/28). All germline mutations were deleterious: 53% (16/30) truncating and 47% (14/30) missense. The most common somatic variant was the R525H mutation in 70% (21/30). The BM diagnostic spectrum in DDX41- C/MNs that harbor both a germline and somatic DDX41 mutation is broad-ranging from CCUS to AML. We describe consistent hematopathologic findings that pathologists may expect in these cases.

同时携带种系和体细胞 DDX41 基因突变的细胞减少症/骨髓性肿瘤治疗无效患者的外周血和骨髓检查结果。
DDX41 相关全血细胞减少症/骨髓性肿瘤(DDX41-C/MNs)是一种新出现的病理实体。我们研究了具有种系和体细胞 DDX41 基因突变的 DDX41-C/MNs-GS (DDX41-C/MNs-GS)的血液病理学发现。我们回顾了未经治疗的 DDX41-C/MNs-GS 患者的外周血和骨髓(BM)检查结果:10%(3/30)被归类为意义不明的克隆性全血细胞减少症(CCUS),17%(5/30)被归类为骨髓增生异常肿瘤/综合征(MDS),并伴有以下症状
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来源期刊
Applied Immunohistochemistry & Molecular Morphology
Applied Immunohistochemistry & Molecular Morphology ANATOMY & MORPHOLOGY-MEDICAL LABORATORY TECHNOLOGY
CiteScore
3.20
自引率
0.00%
发文量
153
期刊介绍: ​Applied Immunohistochemistry & Molecular Morphology covers newly developed identification and detection technologies, and their applications in research and diagnosis for the applied immunohistochemist & molecular Morphologist. Official Journal of the International Society for Immunohistochemisty and Molecular Morphology​.
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