NCT04173585

Brief Summary

The long-term outcome of patients with acute myeloid leukemia (AML) remains poor, with less than 30% of patients achieving long lasting remission or cure. This poor outcome is largely due to refractoriness to induction chemotherapy as well as relapses during and after completion of intensive induction and consolidation therapy. In patients with refractory/relapsed AML hematopoietic cell transplantation (allo-HCT) is currently the only treatment option offering a prospect of cure but outcome is heavy influenced by the remission status before allo-HCT. Therefore, patients are typically treated with salvage regimens based on high dose cytarabine (HiDAC) combined with mitoxantrone, fludarabine or idarubicin. Nevertheless, the remission rates remain poor and currently there is no accepted standard salvage regimen. Recent studies indicate that combination chemotherapy including HiDAC and gemtuzumab ozogamicin (GO) at a dose of 3 mg/m² leads to improved response rates in refractory AML. Proteasome inhibition with bortezomib appears to be a promising treatment strategy to restore chemo-sensitivity via EZH2 stabilisation. This study aims at improving response rates in refractory/ relapsed AML by combining high dose cytarabine, gemtuzumab ozogamicin (GA) and bortezomib (B). During this phase II study efficacy of B-GA is assessed in comparison to matched historical controls using the Matched Threshold Crossing (MTC)-approach. If results are promising, a subsequent randomized phase III study is intended to assess the efficacy of GA with or without bortezomib.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
50

participants targeted

Target at P25-P50 for phase_2

Timeline
Completed

Started Oct 2019

Typical duration for phase_2

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 22, 2019

Completed
29 days until next milestone

First Submitted

Initial submission to the registry

November 20, 2019

Completed
2 days until next milestone

First Posted

Study publicly available on registry

November 22, 2019

Completed
3.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 28, 2023

Completed
24 days until next milestone

Study Completion

Last participant's last visit for all outcomes

March 24, 2023

Completed
Last Updated

March 27, 2023

Status Verified

March 1, 2023

Enrollment Period

3.4 years

First QC Date

November 20, 2019

Last Update Submit

March 24, 2023

Conditions

Keywords

Acute Myeloid Leukemiatherapy resistancerefractory/relapsedAML

Outcome Measures

Primary Outcomes (1)

  • CR/CRi rate

    Primary endpoint is the CR/CRi rate (response rate), defined as the proportion of patients achieving a complete remission (CR) or complete remission with incomplete hematologic recovery (CRi) according to ELN 2017 criteria after B-GA treatment.

    two years

Study Arms (1)

Bortezomib-Gemtuzumab Ozogamicin Treatment

EXPERIMENTAL

one cycle of combined chemotherapy: * Bortezomib (1.3 mg/m2) sc on day 1 and 3. Dose will be given 3 hours prior to Cytarabine on day 1 and 3 * Cytarabine (1g/m² twice daily) iv over 3 hours on day 1, 2 and 3 Gemtuzumab Ozogamicin (3 mg/m²,up to a maximum of one 5 mg vial) iv over 2 hours on day 1 after first dose of Cytarabine and day 4 * Pegfilgrastim 6 mg sc on day 8 (optional)

Drug: BortezomibDrug: Gemtuzumab Ozogamicin

Interventions

Bortezomib is a small molecule dipeptide binding the catalytic site of the 26 S proteasome. It acts as a potent, reversible, and specific inhibitor of proteasomes and thus impairs the degradation of ubiquitinated proteins. It has demonstrated anti-neoplastic activity in myeloma and lymphoma. It is approved and widely used in multiple myeloma both for first line treatment and relapsed patients.

Also known as: Velcade
Bortezomib-Gemtuzumab Ozogamicin Treatment

Gemtuzumab Ozogamicin is a monoclonal antibody directed against the myeloid surface antigen CD33. The antibody is linked to calicheamicin which serves as cytotoxic agent. For years, gemtuzumab ozogamicin has been tested in clinical AML trials. Though withdrawn from the US market in 2010, FDA approval was granted in September 2018, EU approval in April 2018 based on encouraging results from recent clinical trials using enhanced dosing schedules.

Also known as: Mylotarg
Bortezomib-Gemtuzumab Ozogamicin Treatment

Eligibility Criteria

Age18 Years - 100 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients with confirmed diagnosis of AML according to WHO-2016 \[27\] (except acute promyelocytic leukemia) either de novo AML, AML after preceding myelodysplastic or myeloproliferative syndrome (MDS/MPD), and therapy related AML (t-AML) after previous cytotoxic therapy or radiation are eligible either refractory (A) to first line chemotherapy or in first relapse (B), also after stem cell transplantation. FLT3-ITD status, cytogenetics (refractory and relapsed patients), in addition status of core-binding-factor as well as double mutant CEBPA in relapsed patients must be available.
  • A) Refractory to induction therapy is defined as no CR, CRi (according to standard criteria) \[4\] after 2 intensive induction cycles of at least 7 days of cytarabine 100-200 mg/m² continuously or an equivalent regimen with cytarabine with total dose not less than 700 mg/m² per cycle and 3 days of an anthracycline/ anthraquinone (e.g. daunorubicin, idarubicin).
  • B) Relapsed after first line therapy is defined as relapsed AML after CR or CRi (according to standard criteria) after at least one intensive induction and consolidation (including intensive chemotherapy and/or hematopoietic cell transplantation) therapy.
  • ECOG performance status ≤ 2
  • Discontinuation of prior AML treatment before the start of study treatment (except hydroxyurea or other treatment to control hyperleukocytosis) for at least 10 days for cytotoxic agents and 5 half-lives for non-cytotoxic/ investigational drug treatment preceding the first dose of trial medications
  • Age ≥ 18 years
  • Pregnancy and childbearing potential:
  • Non-pregnant and non-nursing women of childbearing potential must have a negative serum or urine ß-HCG pregnancy test within a sensitivity of at least 25 mIU/mL within 72 hours prior to registration ("Women of childbearing potential" is defined as a sexually active mature woman who has not undergone a hysterectomy or who has had menses at any time in the preceding 24 consecutive months).
  • Female patients of reproductive age must agree to avoid getting pregnant while on therapy.
  • Women of child-bearing potential must either commit to continued abstinence from heterosexual intercourse or begin highly effective methods of birth control during study and for at least 7 months after end of treatment.
  • Men must use a latex condom during any sexual contact with women of childbearing potential, even if they have undergone a successful vasectomy and must agree to avoid to father a child during study and until 6 months after end of study/treatment.
  • Willingness of patient to adhere to protocol specific requirements and capacity to give written informed consent
  • Ability of patient to understand the character and individual consequences of clinical Trial
  • Following receipt of verbal and written information about the study, the patient must provide signed informed consent before any study related activity is carried out

You may not qualify if:

  • Acute promyelocytic leukemia (AML M3)
  • Acute myeloid leukemia previously treated with gemtuzumab ozogamicin
  • Hyperleukocytosis (leukocytes \> 30,000/μl) at the time of study entry. These patients should be treated with hydroxyurea and / or receive leukocytapheresis treatment according to routine practice and are only allowed to enter into the study when leukocyte counts of 30,000/μl or below are reached. If hydroxyurea is not sufficient to control hyperleukocytosis i.v. application of 100 mg cytarabine continuously over 24 hours may be discussed with the coordinating investigator or the scientific coordinator
  • Known central nervous system manifestation of AML
  • uncontrolled or significant cardiovascular disease, including any of the following:
  • History of heart failure NYHA class 3 or 4
  • Left ventricular ejection fraction (LVEF) ≤ 40% by echocardiogram
  • History of uncontrolled angina pectoris or myocardial infarction within 12 months prior to screening
  • History of second (Mobitz II) or third degree heart block or any cardiac arrhythmias requiring anti-arrhythmic therapy (beta blockers or digoxin are permitted)
  • Pregnant or nursing woman
  • Chronically impaired renal function (creatinine clearance \< 30 ml / min)
  • Inadequate liver function (ALT and AST ≥ 2 x ULN), total bilirubin ≥ 1.5 x ULN
  • Known liver cirrhosis or history of veno-occlusive disease (VOD)
  • HIV infection and/or active hepatitis B or C infection (active hepatitis B defined by HBs Ag positivity, active hepatitis C defined by positive virus load)
  • Evidence or history of severe non-leukemia associated bleeding diathesis or coagulopathy
  • +11 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University Hospital Heidelberg, Internal Medicine V

Heidelberg, Baden-Wurttemberg, 69120, Germany

Location

MeSH Terms

Conditions

Leukemia, Myeloid, AcuteRecurrence

Interventions

BortezomibGemtuzumab

Condition Hierarchy (Ancestors)

Leukemia, MyeloidLeukemiaNeoplasms by Histologic TypeNeoplasmsHematologic DiseasesHemic and Lymphatic DiseasesDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Boronic AcidsAcids, NoncarboxylicAcidsInorganic ChemicalsBoron CompoundsOrganic ChemicalsPyrazinesHeterocyclic Compounds, 1-RingHeterocyclic CompoundsCalicheamicinsAminoglycosidesGlycosidesCarbohydratesAntibodies, Monoclonal, HumanizedAntibodies, MonoclonalAntibodiesImmunoglobulinsImmunoproteinsBlood ProteinsProteinsAmino Acids, Peptides, and ProteinsSerum GlobulinsGlobulins

Study Officials

  • Carsten Müller-Tidow, Prof., MD

    Medical Director of Internal Medicine V, University Hospital Heidelberg

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 2
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Model Details: Simon's Optimal Two-Stage Design: The Matched Threshold Crossing (MTC) Design
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Scientific Coordinator

Study Record Dates

First Submitted

November 20, 2019

First Posted

November 22, 2019

Study Start

October 22, 2019

Primary Completion

February 28, 2023

Study Completion

March 24, 2023

Last Updated

March 27, 2023

Record last verified: 2023-03

Locations