Acute myeloid leukemia with myelodysplasia-related changes diagnosed with multilineage dysplasia alone demonstrates a superior clinical outcome.

Abstract:

:Acute myeloid leukemia with myelodysplasia-related changes (AML-MRC) generally confers poor prognosis; however, the clinical outcome remains heterogeneous. We sought to further stratify this subentity of AML by performing a retrospective analysis of 179 adult patients with AML-MRC diagnosed at our institution. Based on 2016 World Health Organization diagnostic criteria, 44 (25%) patients had multilineage dysplasia alone (AML-MRC-M), 74 (41%) had history of myelodysplastic syndrome (MDS) or myelodysplastic/myeloproliferative disease (AML-MRC-H), and 61 (34%) had MDS-related cytogenetics (AML-MRC-C). AML-MRC-M and hematopoietic stem cell transplantation (HSCT) were associated with prolonged event-free survival (EFS) (P = 0.0051 and P < 0.0001, respectively) and overall survival (OS) (P = 0.0015 and P < 0.0001, respectively), whereas AML-MRC-C and age ≥60 years were associated with shorter EFS (P = 0.028 and P = 0.015, respectively) and OS (P = 0.021 and P = 0.013, respectively). Of note, NPM1mut did not affect the patient's outcome. Multivariable analysis confirmed HSCT and AML-MRC-C as independent predictors for EFS (P < 0.0001 and P = 0.0342, respectively) and OS (P < 0.0001 and P = 0.0295, respectively). AML-MRC-M was an independent predictor for OS (P = 0.0449). When compared with a control group of 105 patients with normal karyotype AML not otherwise specified (NK-AML-NOS), patients with AML-MRC-M had similar EFS and OS (P = 0.99 and P = 0.91, respectively). However, AML-MRC-H and AML-MRC-C were associated with shorter EFS and OS (P = 0.0002 and P < 0.0001, respectively) than the same control group. In a subset of patients, next-generation sequencing analysis showed AML-MRC-M was associated with ASXL1 mutation compared with NK-AML (56% vs 6%). In conclusion, AML-MRC-M demonstrates a superior clinical outcome compared with the rest of the AML-MRC group. They have comparable outcomes to NK-AML-NOS, and these data suggest AML-MRC-M may be considered not to be classified in the same group as patients with other AML-MRC.

journal_name

Hum Pathol

journal_title

Human pathology

authors

Jiang G,Capo-Chichi JM,Liu A,Atenafu EG,Guo R,Tierens A,Minden MD,Chang H

doi

10.1016/j.humpath.2020.08.003

subject

Has Abstract

pub_date

2020-10-01 00:00:00

pages

117-126

eissn

0046-8177

issn

1532-8392

pii

S0046-8177(20)30150-7

journal_volume

104

pub_type

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