Efficacy Study of Dendritic Cell Vaccination in Patients With Acute Myeloid Leukemia in Remission (WIDEA)
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ClinicalTrials.gov Identifier: NCT01686334 |
Recruitment Status :
Recruiting
First Posted : September 18, 2012
Last Update Posted : January 19, 2021
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Condition or disease | Intervention/treatment | Phase |
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Acute Myeloid Leukemia | Biological: DC vaccine | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 130 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Wilms' Tumor (WT1) Antigen-targeted Dendritic Cell Vaccination to Prevent Relapse in Adult Patients With Acute Myeloid Leukemia: a Multicenter Randomized Phase II Trial |
Study Start Date : | October 2012 |
Estimated Primary Completion Date : | July 2024 |

Arm | Intervention/treatment |
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Experimental: DC vaccine
Vaccination with autologous WT1 mRNA-electroporated DCs plus follow-up care. Patients receiving low-intensity chemotherapy are allowed to continue this treatment in combination with DC vaccination.
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Biological: DC vaccine
Autologous WT1 mRNA-electroporated DCs |
No Intervention: Control arm
Follow-up care. Patients receiving low-intensity chemotherapy are allowed to continue this treatment during the follow-up care
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- Overall survival [ Time Frame: At study completion, an average of 5 year ]The primary objective of this randomized phase II clinical study is to determine the effect of WT1-targeted dendritic cell vaccination on overall survival in adult AML patients at very high risk of relapse and in complete remission.
- Relapse rate [ Time Frame: At study completion, an average of 5 year ]to determine the effect of WT1-targeted dendritic cell vaccination on relapse rate in adult AML patients at very high risk of relapse and in complete remission.
- relapse-free survival [ Time Frame: At study completion, an average of 5 year ]to determine the effect of WT1-targeted dendritic cell vaccination on relapse-free survival in adult AML patients at very high risk of relapse and in complete remission.
- Change in WT1 mRNA levels in peripheral blood [ Time Frame: Through study completion, at every vaccination during 2 years ]Efficacy assessment will also be performed on a molecular level. To this end, peripheral blood samples will be obtained from participants in both study groups (vaccine group and control group) and analyzed by qRT-PCR for WT1 expression, which is a promising molecular biomarker in AML.
- Immune activation [ Time Frame: After the 4th DC vaccine ]This study aims to examine the presence of leukemia-specific immune responses in AML patients in remission and to investigate whether they can be induced or increased in these patients by WT1 mRNA-electroporated DC vaccination.
- General and disease-specific quality of life [ Time Frame: At study completion, an average of 5 year ]Patients will be asked to fill out general and disease-specific quality of life questionnaires to assess changes in general and disease-specific quality of life during the study at regular time points
- Tertiary: Safety [ Time Frame: At study completion, an average of 5 year ]To corroborate the safety of WT1 mRNA-electroporated DC vaccination in adult patients with AML. Safety will be assessed at every visit by adverse event reporting and clinical laboratory tests.
- Exploratory: Effect of low-intensity chemotherapy [ Time Frame: At study completion, an average of 5 year ]To evaluate the effect of low-intensity chemotherapy on the primary and secondary objectives.

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
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Diagnosis of acute myeloid leukemia (AML) according to the 2008 criteria of the World Health Organization (WHO).
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all French-American-British (FAB) subtypes, except:
- M3 (acute promyelocytic leukemia)
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all cases of de novo AML or secondary AML with ≥ 20 % blasts in peripheral blood and/or bone marrow, except:
- AML secondary to myeloproliferative neoplasms (MPN)
- AML secondary to exposure of leukemogenic agents (t-AML) unless treated with CPX-351 chemotherapy or hypomethylating agents combined with venetoclax.
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Completion of one of the following treatment options:
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I) Intensive chemotherapy:
- (1) at least one cycle of induction chemotherapy and one cycle of consolidation chemotherapy (low-dose cytarabine as consolidation therapy is allowed) OR
- (2) one to two cycles of CPX-351 induction treatment and up to two cycles of CPX-351 consolidation treatment OR
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II) Low-intensity chemotherapy:
- (3) at least two cycles to maximum six cycles of hypomethylating agents whether or not combined with venetoclax OR
- (4) at least two cycles to maximum six cycles of low-dose cytarabine combined with venetoclax;
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resulting in:
- morphological complete remission (CR), i.e. bone marrow blast count <5% with neutrophil count >1000 cells/µL and platelet count >100,000 cells/µL OR
- morphological complete remission with incomplete blood recovery (CRi), i.e. bone marrow blast count <5% with neutrophil count <1000 cells/µL or platelet count <100,000 cells/µL.
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For the purpose of this study protocol, platelet count must be >50,000 cells/µL.
- Interval between the completion of the last intensive chemotherapy administration (in case of low-intensity chemotherapy: last cycle (min. 2 to max. 6 cycles) before achieving CR or CRi) and the start of vaccination (or the start of follow-up in case of the control arm): 6 weeks (minimum) and 16 weeks (maximum) (in case of low-intensity chemotherapy: maximum 10 weeks).
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Adult (≥ 18 years) at very high risk of relapse according to:
- Age ≥ 60 years, and/or
- Adverse biological features (e.g. adverse cytogenetics, adverse morphological features, adverse molecular features, hyperleukocytosis (> 100000 cells/µL)), and
- Ineligible for or unwilling to receive hematopoietic stem cell transplantation.
- WHO performance status: grade 0, 1 or 2 at the time of enrollment. For definition of performance status, see: http://www.ecog.org/general/perf_stat.html
- Absence of any psychological, familial, sociological, geographical or physical condition potentially hampering compliance with the study protocol and follow-up schedule; those conditions should be discussed with the patient before study entry.
Exclusion Criteria:
- Participation in any other interventional clinical trial during the study period.
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History or concomitant presence of any other malignancy, except for:
- non-melanoma skin cancer
- carcinoma in situ of the cervix
- any other effectively treated malignancy that has been in remission for >5 years or that is highly likely to be cured at the time of enrollment.
- Concomitant presence of any immunosuppressive disease (e.g. HIV) or any active autoimmune condition, except for vitiligo.
- Concomitant use of systemic corticosteroids in immunosuppressive doses (>1 mg/kg/day of prednisone, or equivalent dose for other corticosteroid preparations) or any other immunosuppressive agent. A minimum of 4 weeks must have elapsed between the last dose of immunosuppressive therapy and the first vaccination. Topical corticosteroids are permitted, except if applied at the sites of DC injection.
- Pregnant or breast-feeding

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01686334
Contact: Zwi N Berneman, MD, PhD | +32 3 8213780 | zwi.berneman@uza.be | |
Contact: Ann Van de Velde, MD, PhD | +32 3 8213916 | ann.vandevelde@uza.be |
Belgium | |
ZNA Stuivenberg | Recruiting |
Antwerp, Belgium, 2060 | |
Contact: Local Investigator: Dimitri Breems, MD, PhD | |
Antwerp University Hospital | Recruiting |
Antwerp, Belgium, 2650 | |
Principal Investigator: Zwi N Berneman, MD, PhD | |
University Hospital Brussels | Recruiting |
Brussels, Belgium, 1090 | |
Contact: Local Investigator: Rik Schots, MD, PhD | |
Cliniques Universitaires Saint-Luc | Recruiting |
Brussel, Belgium, 1200 | |
Contact: Local Investigator: Violaine Havelange, MD, PhD | |
Ghent University Hospital | Recruiting |
Ghent, Belgium, 9000 | |
Contact: Local Investigator: Tessa Kerre, MD, PhD | |
Centre Hospitalier Universitaire de Liège | Recruiting |
Liège, Belgium, 4000 | |
Contact: Local Investigator: Yves Beguin, MD, PhD | |
AZ Delta | Recruiting |
Roeselare, Belgium, 8800 | |
Contact: Local Investigator: Dries Deeren, MD | |
CHU Mont Godinne | Recruiting |
Yvoir, Belgium, 5530 | |
Contact: Local Investigator: Carlos Graux, MD, PhD |
Study Director: | Zwi Berneman, MD, PhD | University Hospital, Antwerp | |
Principal Investigator: | Evelien LJ Smits, MSc, PhD | Universiteit Antwerpen | |
Principal Investigator: | Sébastien Anguille, MD, PhD | University Hospital, Antwerp | |
Principal Investigator: | Ann Van de Velde, MD, PhD | University Hospital, Antwerp |
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Zwi Berneman, Full Professor, University Hospital, Antwerp |
ClinicalTrials.gov Identifier: | NCT01686334 |
Other Study ID Numbers: |
CCRG12-001 |
First Posted: | September 18, 2012 Key Record Dates |
Last Update Posted: | January 19, 2021 |
Last Verified: | January 2021 |
in complete remission Adult (>18 years) at very high risk of relapse |
Leukemia Leukemia, Myeloid Leukemia, Myeloid, Acute Neoplasms by Histologic Type Neoplasms |