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- W2780781935 abstract "Abstract Recent work has identified distinct molecular subgroups of acute myeloid leukemia (AML) with implications for disease classification and prognosis. NPM1 is one of the most common recurrently mutated genes in AML. NPM1 mutations often co‐occur with FLT3‐ITDs and mutations in genes regulating DNA methylation, such as DNMT3A , TET2 , and IDH1/2 . It remains unclear whether these genetic alterations are associated with distinct immunophenotypic findings or affect prognosis. We identified 133 cases of NPM1 ‐mutated AML and correlated sequencing data with immunophenotypic and clinical findings. Of 84 cases (63%) that lacked monocytic differentiation (“myeloid AML”), 40 (48%) demonstrated an acute promyelocytic leukemia‐like (APL‐like) immunophenotype by flow cytometry, with absence of CD34 and HLA‐DR and strong myeloperoxidase expression, in the absence of a PML‐RARA translocation. Pathologic variants in TET2 , IDH1, or IDH2 were identified in 39/40 APL‐like cases. This subset of NPM1 ‐mutated AML was associated with longer relapse‐free and overall survival, when compared with cases that were positive for CD34 and/or HLA‐DR. The combination of NPM1 and TET2 or IDH1/2 mutations along with an APL‐like immunophenotype identifies a distinct subtype of AML. Further studies addressing its biology and clinical significance may be especially relevant in the era of IDH inhibitors and recent work showing efficacy of ATRA therapy in NPM1 and IDH1 ‐mutated AML." @default.
- W2780781935 created "2018-01-05" @default.
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- W2780781935 date "2018-01-25" @default.
- W2780781935 modified "2023-10-17" @default.
- W2780781935 title "A distinct immunophenotype identifies a subset of <i>NPM1</i>‐mutated AML with <i>TET2</i> or <i>IDH1/2</i> mutations and improved outcome" @default.
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- W2780781935 doi "https://doi.org/10.1002/ajh.25018" @default.
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