- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04307329
Monalizumab and Trastuzumab In Metastatic HER2-pOSitive breAst Cancer: MIMOSA-trial (MIMOSA)
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
In this phase II clinical trial with an explorative nature, the efficacy of the combination of monalizumab and trastuzumab is assessed in patients with metastatic or locally incurable HER2-positive breast cancer. Clinical efficacy will be assessed in patients with high stromal tumor-infiltrating lymphocytes (sTILs) or low sTILs in two separate cohorts (higher or equal to 5% versus lower than 5%). Since the combination of monalizumab and trastuzumab has not been administered before, dose limiting toxicities (DLTs) will be monitored throughout the trial using the Pocock-type boundary rules for continuous monitoring of toxicity in phase II trials.
In the first stage, 11 patients will be accrued per cohort. If there are 1 or fewer responses in these 11 patients, the study will be stopped. Otherwise, 8 additional patients will be accrued for a total of 19 patients.
The study will start with two cohorts (sTILs high and sTILs low), a total of 22 (2x11) patients will be included in the first stage. Dependent on the interim analysis (continuation of no cohorts, 1 or 2 cohorts), a maximum of 38 patients will be included.
Study Type
Enrollment (Anticipated)
Phase
- Phase 2
Contacts and Locations
Study Locations
-
-
-
Amsterdam, Netherlands
- NKI-AVL
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
without SISH amplification) breast cancer. HER2-positivity must have been assessed on a metastatic lesion.
- Histological or cytological confirmed locally incurable or metastatic disease
- Accessible lesion for study biopsies.
- Administration of at least one line of palliative treatment with documented progression and a maximum of three lines of palliative chemotherapy in combination with HER2 targeting agents (TDM-1 is considered one line of palliative treatment). Trastuzumab in combination with endocrine treatment is not defined as one line of treatment.
- Documented progression during previous trastuzumab-based therapy
- Measurable disease according to RECIST1.1 (at least one target lesion)
- Left ventricular ejection fraction of 50% or higher
- WHO performance status of 0 or 1
- No signs of a visceral crisis
- Signed written informed consent - Subjects with brain metastases are eligible if they have been treated, asymptomatic and there is no magnetic resonance imaging (MRI) evidence of progression for at least 4 weeks prior to study registration. There must also be no requirement for immunosuppressive doses of systemic corticosteroids (> 10 mg/day prednisone equivalents) for at least 2 weeks prior to study drug administration
Exclusion Criteria:
- uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris
- known leptomeningeal disease localization
- history of having received other anticancer therapies within 2 weeks of start of the study drug
- history of immunodeficiency, autoimmune disease, conditions requiring innmunosuppression (>10 mg daily prednisone equivalents) or chronic infections. Subjects with vitiligo, diabetes mellitus type I on a stable insulin regimen, psoriasis not requiring systemic treatment or resolved childhood asthma/atopy would be an exception to this rule. Subjects that require intermittent use of bronchodilators, inhaled steroids, or local steroid injections will not be excluded from the study. Subjects with hypothyroidism stable on hormone replacement, Sjogren's syndrome or conditions not expected to recur in the absence of an external trigger will not be excluded from the study. Adrenal replacement doses >10 mg daily prednisone equivalents are permitted in the absence of active autoinnmune disease
- prior treatment with immune checkpoint blockade or other forms of imnnunotherapy, such as but not limited to: anti-PD-(L)1, anti-PD-L2, anti-CTLA-4, anti-GITR or CD137/0X40 agonists
- prior treatment with HER2-based vaccines
- live vaccine within two weeks prior to start of the study, at any time during the study or within 5 months following the last dose of monalizumab. Inactivated vaccines, such as the seasonal flu vaccination, are allowed
- history of clinically significant or uncontrolled cardiac disease, including congestive heart failure (New York Heart Association functional classification .3), angina, myocardial infarction within 12 months prior to study treatment or ventricular arrhythmia.
- active other cancer
- positive test for hepatitis B surface virus surface antigen (HBsAg) or hepatitis C virus ribonucleic acid (HCV antibody) indicating acute or chronic infection.
- allogeneic stem cell or organ transplantation, HIV or active tuberculosis
- history of uncontrolled serious medical or psychiatric illness
- Presence of any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule
- current pregnancy or breastfeeding. Women of childbearing potential (WOCBP) must use adequate contraceptive protection. WOCBP must have a negative serum or urine pregnancy test
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Monalizumab + trastuzumab - low TILs (<5%)
trastuzumab 4 mg/kg and monalizumab 750 mg every two weeks.
|
Monalizumab 750 mg every two weeks
Trastuzumab 4 mg/kg every two weeks
|
Experimental: Monalizumab + trastuzumab - high TILs (>=5%)
trastuzumab 4 mg/kg and monalizumab 750 mg every two weeks.
|
Monalizumab 750 mg every two weeks
Trastuzumab 4 mg/kg every two weeks
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Response
Time Frame: to be assessed up to 120 months
|
number of patients with partial response or complete response according to RECIST1.1
|
to be assessed up to 120 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Clinical Benefit
Time Frame: to be assessed every 8 weeks up to 120 months
|
number of patients with complete response, partial response or stable disease for more than 24 weeks according to RECIST1.1
|
to be assessed every 8 weeks up to 120 months
|
Progression Free Survival
Time Frame: assessed up to 120 months
|
From date of registration until date of first documented progression or date of death, which ever comes first
|
assessed up to 120 months
|
Overall survival
Time Frame: assessed up to 120 months
|
From date of registration until date of death
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assessed up to 120 months
|
Toxicity; incidence of toxicity
Time Frame: assessed every 2 weeks until 30 days after last study treatment
|
Adverse events will be graded according to NCI Common Toxicity Criteria version 5.0
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assessed every 2 weeks until 30 days after last study treatment
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Marleen Kok, MD, NKI-AVL
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- N19MIM
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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