The added value of multi‐state modelling in a randomized controlled trial: The HOVON 102 study re‐analyzed

Abstract Clofarabine is an active antileukemic drug for subgroups of patients with acute myeloid leukemia (AML). Multi‐state models can provide additional insights to supplement the original intention‐to‐treat analysis of randomized controlled trials (RCT). We re‐analyzed the HOVON102/SAKK30/09 phas...

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Main Authors: Katerina Bakunina, Hein Putter, Jurjen Versluis, Eva A. S. Koster, Bronno van derHolt, Markus G. Manz, Dimitri A. Breems, Bjorn T. Gjertsen, Jacqueline Cloos, Peter J. M. Valk, Jakob Passweg, Thomas Pabst, Gert J. Ossenkoppele, Bob Löwenberg, Jan J. Cornelissen, Liesbeth C. deWreede
Format: Article
Language:English
Published: Wiley 2022-02-01
Series:Cancer Medicine
Subjects:
Online Access:https://doi.org/10.1002/cam4.4392
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author Katerina Bakunina
Hein Putter
Jurjen Versluis
Eva A. S. Koster
Bronno van derHolt
Markus G. Manz
Dimitri A. Breems
Bjorn T. Gjertsen
Jacqueline Cloos
Peter J. M. Valk
Jakob Passweg
Thomas Pabst
Gert J. Ossenkoppele
Bob Löwenberg
Jan J. Cornelissen
Liesbeth C. deWreede
author_facet Katerina Bakunina
Hein Putter
Jurjen Versluis
Eva A. S. Koster
Bronno van derHolt
Markus G. Manz
Dimitri A. Breems
Bjorn T. Gjertsen
Jacqueline Cloos
Peter J. M. Valk
Jakob Passweg
Thomas Pabst
Gert J. Ossenkoppele
Bob Löwenberg
Jan J. Cornelissen
Liesbeth C. deWreede
author_sort Katerina Bakunina
collection DOAJ
description Abstract Clofarabine is an active antileukemic drug for subgroups of patients with acute myeloid leukemia (AML). Multi‐state models can provide additional insights to supplement the original intention‐to‐treat analysis of randomized controlled trials (RCT). We re‐analyzed the HOVON102/SAKK30/09 phase III RCT for newly diagnosed AML patients, which randomized between standard induction chemotherapy with or without clofarabine. Using multi‐state models, we evaluated the effects of induction chemotherapy outcomes (complete remission [CR], measurable residual disease [MRD]), and post‐remission therapy with allogeneic stem cell transplantation [alloSCT] on relapse and death. Through the latter a consistent reduction in the hazard of relapse in the clofarabine arm compared to the standard arm was found, which occurred irrespective of MRD status or post‐remission treatment with alloSCT, demonstrating a strong and persistent antileukemic effect of clofarabine. During the time period between achieving CR and possible post‐remission treatment with alloSCT, non‐relapse mortality was higher in patients receiving clofarabine. An overall net benefit of treatment with clofarabine was identified using the composite endpoint current leukemia‐free survival (CLFS). In conclusion, these results enforce and extend the earlier reported beneficial effect of clofarabine in AML and show that multi‐state models further detail the effect of treatment on competing and series of events.
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spelling doaj.art-efddc38d4b904e3199e4f5412bc60ca22022-12-22T01:36:16ZengWileyCancer Medicine2045-76342022-02-0111363064010.1002/cam4.4392The added value of multi‐state modelling in a randomized controlled trial: The HOVON 102 study re‐analyzedKaterina Bakunina0Hein Putter1Jurjen Versluis2Eva A. S. Koster3Bronno van derHolt4Markus G. Manz5Dimitri A. Breems6Bjorn T. Gjertsen7Jacqueline Cloos8Peter J. M. Valk9Jakob Passweg10Thomas Pabst11Gert J. Ossenkoppele12Bob Löwenberg13Jan J. Cornelissen14Liesbeth C. deWreede15Department of Hematology HOVON Data Center Erasmus MC Cancer Institute Rotterdam The NetherlandsDepartment of Biomedical Data Sciences Leiden University Medical Center Leiden The NetherlandsDepartment of Hematology Erasmus University Medical Center Cancer Institute Rotterdam The NetherlandsDepartment of Hematology Leiden University Medical Center Leiden The NetherlandsDepartment of Hematology HOVON Data Center Erasmus MC Cancer Institute Rotterdam The NetherlandsDepartment of Medical Oncology and Hematology University Hospital Zurich Zurich SwitzerlandDepartment of Hematology Hospital Network Antwerp Stuivenberg/Middelheim Antwerp BelgiumDepartment of Internal Medicine Hematology section Haukeland University Hospital Bergen NorwayDepartment of Hematology Amsterdam UMC VU University Medical Center Cancer Center Amsterdam Amsterdam The NetherlandsDepartment of Hematology Erasmus University Medical Center Cancer Institute Rotterdam The NetherlandsDepartment of Hematology University Hospital Basel Basel SwitzerlandDepartment of Medical Oncology University Hospital/Inselspital Bern SwitzerlandDepartment of Hematology Amsterdam UMC VU University Medical Center Cancer Center Amsterdam Amsterdam The NetherlandsDepartment of Hematology Erasmus University Medical Center Cancer Institute Rotterdam The NetherlandsDepartment of Hematology Erasmus University Medical Center Cancer Institute Rotterdam The NetherlandsDepartment of Biomedical Data Sciences Leiden University Medical Center Leiden The NetherlandsAbstract Clofarabine is an active antileukemic drug for subgroups of patients with acute myeloid leukemia (AML). Multi‐state models can provide additional insights to supplement the original intention‐to‐treat analysis of randomized controlled trials (RCT). We re‐analyzed the HOVON102/SAKK30/09 phase III RCT for newly diagnosed AML patients, which randomized between standard induction chemotherapy with or without clofarabine. Using multi‐state models, we evaluated the effects of induction chemotherapy outcomes (complete remission [CR], measurable residual disease [MRD]), and post‐remission therapy with allogeneic stem cell transplantation [alloSCT] on relapse and death. Through the latter a consistent reduction in the hazard of relapse in the clofarabine arm compared to the standard arm was found, which occurred irrespective of MRD status or post‐remission treatment with alloSCT, demonstrating a strong and persistent antileukemic effect of clofarabine. During the time period between achieving CR and possible post‐remission treatment with alloSCT, non‐relapse mortality was higher in patients receiving clofarabine. An overall net benefit of treatment with clofarabine was identified using the composite endpoint current leukemia‐free survival (CLFS). In conclusion, these results enforce and extend the earlier reported beneficial effect of clofarabine in AML and show that multi‐state models further detail the effect of treatment on competing and series of events.https://doi.org/10.1002/cam4.4392AMLclofarabinecurrent leukemia‐free survivalHSCTmulti‐state modelRCT
spellingShingle Katerina Bakunina
Hein Putter
Jurjen Versluis
Eva A. S. Koster
Bronno van derHolt
Markus G. Manz
Dimitri A. Breems
Bjorn T. Gjertsen
Jacqueline Cloos
Peter J. M. Valk
Jakob Passweg
Thomas Pabst
Gert J. Ossenkoppele
Bob Löwenberg
Jan J. Cornelissen
Liesbeth C. deWreede
The added value of multi‐state modelling in a randomized controlled trial: The HOVON 102 study re‐analyzed
Cancer Medicine
AML
clofarabine
current leukemia‐free survival
HSCT
multi‐state model
RCT
title The added value of multi‐state modelling in a randomized controlled trial: The HOVON 102 study re‐analyzed
title_full The added value of multi‐state modelling in a randomized controlled trial: The HOVON 102 study re‐analyzed
title_fullStr The added value of multi‐state modelling in a randomized controlled trial: The HOVON 102 study re‐analyzed
title_full_unstemmed The added value of multi‐state modelling in a randomized controlled trial: The HOVON 102 study re‐analyzed
title_short The added value of multi‐state modelling in a randomized controlled trial: The HOVON 102 study re‐analyzed
title_sort added value of multi state modelling in a randomized controlled trial the hovon 102 study re analyzed
topic AML
clofarabine
current leukemia‐free survival
HSCT
multi‐state model
RCT
url https://doi.org/10.1002/cam4.4392
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