You E, Cho YU, Jang S, Seo EJ, Lee JH, Lee JH, Lee KH, Koh KN, Im HJ, Seo JJ, Park YM, Lee JK, Park CJ. Frequency and Clinicopathologic Features of RUNX1 Mutations in Patients With Acute Myeloid Leukemia Not Otherwise Specified.
Am J Clin Pathol 2017;
148:64-72. [PMID:
28927163 DOI:
10.1093/ajcp/aqx046]
[Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES
To evaluate the frequency and clinicopathologic characteristics of RUNX1 mutations, focusing on patients with acute myeloid leukemia not otherwise specified (AML NOS).
METHODS
Diagnostic samples from 219 patients with AML NOS were analyzed for RUNX1 mutations using standard polymerase chain reaction and direct sequencing.
RESULTS
Thirty-one RUNX1 mutations were detected in 33 (15.1%) patients. Mutations clustered in the Runt homology (61.3%) and transactivation domains (25.8%). Frameshift mutations were most common (51.6%), followed by missense (41.9%) and nonsense (6.5%) mutations. Patients with RUNX1 mutations had a lower platelet count (P = .013) and shorter relapse-free survival (P = .045) than those without. The presence of RUNX1 and NPM1 or CEBPA mutations was mutually exclusive. A literature review, including our study, showed that patients with RUNX1 mutations were associated with intermediate risk; coexisting mutations such as FLT3-ITD, ASXL1, TET2, and DNMT3A; and a relatively cytogenetic heterogeneity.
CONCLUSIONS
Our findings strengthen previous data concerning RUNX1 mutations in AML and support the notion that RUNX1 mutational status should be integrated into a diagnostic workup of AML, particularly for AML NOS or an intermediate-risk group.
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