J 2021

Loss-of-Function Mutations of BCOR Are an Independent Marker of Adverse Outcomes in Intensively Treated Patients with Acute Myeloid Leukemia

ECKARDT, J. N., S. STASIK, M. KRAMER, C. ROLLIG, A. KRAMER et. al.

Basic information

Original name

Loss-of-Function Mutations of BCOR Are an Independent Marker of Adverse Outcomes in Intensively Treated Patients with Acute Myeloid Leukemia

Authors

ECKARDT, J. N. (guarantor), S. STASIK, M. KRAMER, C. ROLLIG, A. KRAMER, S. SCHOLL, A. HOCHHAUS, M. CRYSANDT, T. H. BRUMMENDORF, R. NAUMANN, B. STEFFEN, V. KUNZMANN, H. EINSELE, M. SCHAICH, A. BURCHERT, A. NEUBAUER, K. SCHAFER-ECKART, C. SCHLIEMANN, S. W. KRAUSE, R. HERBST, M. HANEL, N. FRICKHOFEN, R. NOPPENEY, U. KAISER, C. D. BALDUS, M. KAUFMANN, Zdeněk RÁČIL (203 Czech Republic, belonging to the institution), U. PLATZBECKER, W. E. BERDEL, Jiří MAYER (203 Czech Republic, belonging to the institution), H. SERVE, C. MULLER-TIDOW, G. EHNINGER, F. STOLZEL, F. KROSCHINSKY, J. SCHETELIG, M. BORNHAUSER, C. THIEDE and J. M. MIDDEKE

Edition

Cancers, BASEL, MDPI, 2021, 2072-6694

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

30204 Oncology

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 6.575

RIV identification code

RIV/00216224:14110/21:00121725

Organization unit

Faculty of Medicine

UT WoS

000649898900001

Keywords in English

acute myeloid leukemia; BCOR; BCORL1; loss-of-function; risk stratification; survival

Tags

Tags

International impact, Reviewed
Změněno: 8/6/2021 10:40, Mgr. Tereza Miškechová

Abstract

V originále

Simple Summary Acute myeloid leukemia (AML) is a genetically heterogeneous disease. Clinical phenotypes of frequent mutations and their impact on patient outcome are well established. However, the role of rare mutations often remains elusive. We retrospectively analyzed 1529 newly diagnosed and intensively treated AML patients for mutations of BCOR and BCORL1. We report a distinct co-mutational pattern that suggests a role in disease progression rather than initiation, especially affecting mechanisms of DNA-methylation. Further, we found loss-of-function mutations of BCOR to be independent markers of poor outcomes in multivariable analysis. Therefore, loss-of-function mutations of BCOR need to be considered for AML management, as they may influence risk stratification and subsequent treatment allocation. Acute myeloid leukemia (AML) is characterized by recurrent genetic events. The BCL6 corepressor (BCOR) and its homolog, the BCL6 corepressor-like 1 (BCORL1), have been reported to be rare but recurrent mutations in AML. Previously, smaller studies have reported conflicting results regarding impacts on outcomes. Here, we retrospectively analyzed a large cohort of 1529 patients with newly diagnosed and intensively treated AML. BCOR and BCORL1 mutations were found in 71 (4.6%) and 53 patients (3.5%), respectively. Frequently co-mutated genes were DNTM3A, TET2 and RUNX1. Mutated BCORL1 and loss-of-function mutations of BCOR were significantly more common in the ELN2017 intermediate-risk group. Patients harboring loss-of-function mutations of BCOR had a significantly reduced median event-free survival (HR = 1.464 (95%-Confidence Interval (CI): 1.005-2.134), p = 0.047), relapse-free survival (HR = 1.904 (95%-CI: 1.163-3.117), p = 0.01), and trend for reduced overall survival (HR = 1.495 (95%-CI: 0.990-2.258), p = 0.056) in multivariable analysis. Our study establishes a novel role for loss-of-function mutations of BCOR regarding risk stratification in AML, which may influence treatment allocation.