Monosomal karyotype and chromosome 17p loss or TP53 mutations in decitabine-treated patients with acute myeloid leukemia.


Journal

Annals of hematology
ISSN: 1432-0584
Titre abrégé: Ann Hematol
Pays: Germany
ID NLM: 9107334

Informations de publication

Date de publication:
Jul 2020
Historique:
received: 16 01 2020
accepted: 12 05 2020
pubmed: 7 6 2020
medline: 24 7 2020
entrez: 7 6 2020
Statut: ppublish

Résumé

TP53 aberrations reportedly predict favorable responses to decitabine (DAC) in acute myeloid leukemia (AML). We evaluated clinical features and outcomes associated with chromosome 17p loss or TP53 gene mutations in older, unfit DAC-treated AML patients in a phase II trial. Of 178 patients, 25 had loss of 17p in metaphase cytogenetics; 24 of these had a complex (CK+) and 21 a monosomal karyotype (MK+). In analyses in all patients and restricted to CK+ and MK+ patients, 17p loss tended to associate with higher rates of complete remission (CR), partial remission (PR), or antileukemic effect (ALE). Despite favorable response rates, there was no significant OS difference between patients with or without loss of 17p in the entire cohort or in the CK+ and MK+ cohort. TP53 mutations were identified in eight of 45 patients with material available. Five of the eight TP53-mutated patients had 17p loss. TP53-mutated patients had similar rates of CR/PR/ALE but shorter OS than those with TP53 wild type (P = 0.036). Moreover, patients with a subclone based on mutation data had shorter OS than those without (P = 0.05); only one patient with TP53-mutated AML had a subclone. In conclusion, 17p loss conferred a favorable impact on response rates, even among CK+ and MK+ patients that however could not be maintained. The effect of TP53 mutations appeared to be different; however, patient numbers were low. Future research needs to further dissect the impact of the various TP53 aberrations in HMA-based combination therapies. The limited duration of favorable responses to HMA treatment in adverse-risk genetics AML should prompt physicians to advance allografting for eligible patients in a timely fashion.

Identifiants

pubmed: 32504186
doi: 10.1007/s00277-020-04082-7
pii: 10.1007/s00277-020-04082-7
pmc: PMC7316846
doi:

Substances chimiques

TP53 protein, human 0
Tumor Suppressor Protein p53 0
Decitabine 776B62CQ27

Types de publication

Clinical Trial, Phase II Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

1551-1560

Subventions

Organisme : Deutsche Forschungsgemeinschaft
ID : SPP 1463 ML 429/8-1; CRC 992 MEDEP C04; FOR 2674 LU 429/16-1
Organisme : Deutsche Forschungsgemeinschaft
ID : FOR 2674 BE 6461/1-1
Organisme : Deutsche Krebshilfe
ID : 111210
Organisme : Boehringer Ingelheim Stiftung
ID : Exploration Grant

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Auteurs

Heiko Becker (H)

Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.
German Cancer Consortium (DKTK) partner site, Freiburg, Germany.

Dietmar Pfeifer (D)

Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.

Gabriele Ihorst (G)

Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.
Clinical Trials Unit, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.

Milena Pantic (M)

Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.

Julius Wehrle (J)

Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.
German Cancer Consortium (DKTK) partner site, Freiburg, Germany.

Björn H Rüter (BH)

Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.

Lars Bullinger (L)

Department of Internal Medicine III, University Hospital of Ulm, Ulm, Germany.
Charité University Medicine, Berlin, Germany.

Björn Hackanson (B)

Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.
Interdisciplinary Cancer Center Augsburg, Augsburg, Germany.

Ulrich Germing (U)

Dept. of Hematology, Oncology and Clincal Immunology, University Clinic Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany.

Andrea Kuendgen (A)

Dept. of Hematology, Oncology and Clincal Immunology, University Clinic Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany.

Uwe Platzbecker (U)

University Hospital Dresden, Dresden, Germany.
University Hospital Leipzig, Leipzig, Germany.

Konstanze Döhner (K)

Department of Internal Medicine III, University Hospital of Ulm, Ulm, Germany.

Arnold Ganser (A)

Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany.

Anne Hagemeijer (A)

Department of Human Genetics, University of Leuven, Leuven, Belgium.

Pierre W Wijermans (PW)

Haga Ziekenhuis, The Hague, The Netherlands.

Hartmut Döhner (H)

Department of Internal Medicine III, University Hospital of Ulm, Ulm, Germany.

Justus Duyster (J)

Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.
German Cancer Consortium (DKTK) partner site, Freiburg, Germany.

Michael Lübbert (M)

Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany. michael.luebbert@uniklinik-freiburg.de.
German Cancer Consortium (DKTK) partner site, Freiburg, Germany. michael.luebbert@uniklinik-freiburg.de.

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