- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02478125
Pilot Study of Mobilization and Treatment of Disseminated Tumor Cells in Men With Metastatic Prostate Cancer
A Pilot Study of Mobilization and Treatment of Disseminated Tumor Cells in Men With Metastatic Prostate Cancer
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This is an open label, multiple site, pilot study. Hypothesis: Treatment with Burixafor hydrobromide will effectively mobilize metastatic prostate cancer (PCa) cells (i.e. disseminated tumor cells; DTCs) into the blood from the bone marrow. In preclinical models, these bone marrow niche engaged cells are more resistant to therapy as compared to soft tissue sites.
It has been demonstrated that prostate cancer cells have been mobilized out of the bone marrow of mice utilizing an anti-CXCR4 strategy; making them more susceptible to chemotherapy. Currently, the anti-CXCR4 agent plerixafor is FDA approved to be given for up to 4 consecutive days in order to mobilize hematopoietic stem cells (HSCs).
Burixafor hydrobromide is a potent anti-CXCR4 agent that is in clinical trials. Burixafor hydrobromide, alone or in combination with G-CSF, is currently in Phase II testing for use as a hematopoetic stem cell (HSC) mobilization agent. When Burixafor hydrobromide is given intravenously (IV) alone at a dose of 3.14 mg/kg it has been shown to result in a 7.8 fold mean increase in peripheral blood CD34+ (a HSC marker) cells 6-hours post-infusion.
Study Type
Enrollment (Actual)
Phase
- Phase 1
Contacts and Locations
Study Locations
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Maryland
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Baltimore, Maryland, United States, 21287
- Johns Hopkins University
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Have signed an informed consent document indicating that the subject understands the purpose of and procedures required for the study and are willing to participate in the study
- Be willing/able to adhere to the prohibitions and restrictions specified in this protocol
- Male aged 18 years and above
- Eastern cooperative group (ECOG) performance status ≤2
- Documented histologically confirmed adenocarcinoma of the prostate
- Metastatic prostate cancer to the bone as documented by positive bone scan imaging
- Patient must be eligible for chemotherapy with docetaxel
- Patient must have evidence of castrate resistant prostate cancer as evidenced by a confirmed rising PSA (per Prostate Cancer Working Group 2 [PCWG2] criteria) and a castrate serum testosterone level (i.e. ≤ 50 mg/dL).
Exclusion Criteria:
- Have known allergies, hypersensitivity, or intolerance to docetaxel or dexamethasone or their excipients
- Prior pelvic radiation (e.g. external beam, brachytherapy, etc) that, in the opinion of the investigator, may lead to decreased bone marrow cellularity in a marrow sample obtained from a pelvic bone marrow biopsy
Ongoing systemic therapy (other than a GnRH agonist/antagonist) for prostate cancer including, but not limited to:
- CYP-17 inhibitors (e.g. ketoconazole, abiraterone)
- Antiandrogens (e.g. bicalutamide, nilutamide)
- Second generation antiandrogens (e.g. enzalutamide)
- Immunotherapy (e.g. sipuleucel-T, ipilimumab)
- Chemotherapy (e.g. docetaxel, cabazitaxel)
- Prior radiopharmaceutical therapy (e.g. radium-223, strontium-89, samarium-153, etc) within the past year
- Have any condition that, in the opinion of the investigator, would compromise the well-being of the subject or the study or prevent the subject from meeting or performing study requirements
- Active infection or other medical condition that would make corticosteroids (i.e. dexamethasone) use contraindicated
- Uncontrolled hypertension (systolic BP ≥ 160 mmHg or diastolic BP ≥ 95 mmHg) Patients with a history of hypertension are allowed provided blood pressure is controlled by anti-hypertensive treatment
- Severe hepatic impairment (Child-Pugh Class C)
- History of pituitary or adrenal dysfunction (note: the use of daily steroids does not exclude someone from participating in this study)
- Have poorly controlled diabetes (HgB A1C ≥ 8%)
- Any psychological, familial, sociological, or geographical condition that could potentially interfere with compliance with the study protocol and follow-up schedule.
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 |
---|---|
Active Comparator: burixafor hydrobromide
Four daily doses of burixafor hydrobromide alone
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Investigators will determine the kinetics of PCa cell release into the blood with four daily dosages of Burixafor hydrobromide alone or in combination with G-CSF
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Active Comparator: G-CSF
G-CSF will be given as a daily subcutaneous (SC) injection beginning 4 days prior to Burixafor hydrobromide and continuing through the 4 days of Burixafor hydrobromide treatment
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G-CSF will be given as a daily subcutaneous (SC) injection beginning 4 days prior to Burixafor hydrobromide and continuing through the 4 days of Burixafor hydrobromide treatment
Other Names:
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Experimental: Docetaxel
Investigators will administer a single 75 mg/m2 IV dose of docetaxel. Twenty-one days later investigators will re-treat enrolled men with the optimal mobilization strategy + docetaxel IV. The second dose of docetaxel being given in combination with the optimal mobilization strategy will be chosen according to a standard 3+3 dose escalation schema, in which the dose of bruixafor +/- G-CSF will be held constant and the dose of docetaxel will escalate between three dose-levels: 1) docetaxel 30 mg/m2 IV, 2) docetaxel 60 mg/m2 IV, and 3) docetaxel 75 mg/m2 |
Investigators will administer a single 75 mg/m2 IV dose of docetaxel.
Twenty-one days later investigators will re-treat enrolled men with the optimal mobilization strategy + docetaxel IV.
The second dose of docetaxel being given in combination with the optimal mobilization strategy will be chosen according to a standard 3+3 dose escalation schema, in which the dose of bruixafor +/- G-CSF will be held constant and the dose of docetaxel will escalate between three dose-levels: 1) docetaxel 30 mg/m2 IV, 2) docetaxel 60 mg/m2 IV, and 3) docetaxel 75 mg/m2
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Mobilization of DTCs from bone marrow
Time Frame: 2 years
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Measure the number of CTCs in the peripheral blood.
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2 years
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Kinetics of disseminated tumor cell mobilization by quantifying the number of circulating tumor cells per milliliter of blood over time
Time Frame: 2 years
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This will be reported as number of tumor cells/mL at multiple time points following infusion of Burixafor hydrobromide with and without G-CSF.
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2 years
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Kinetics of hematopoietic stem cell (HSC) mobilization by quantifying the number of circulating HSCs per milliliter of blood over time
Time Frame: 2 years
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This will be reported as number of HSC/mL at multiple time points following infusion of Burixafor hydrobromide with and without G-CSF.
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2 years
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PSA response to treatment with Burixafor hydrobromide alone and Burixafor hydrobromide and docetaxel
Time Frame: 2 years
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2 years
|
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Safety of Burixafor hydrobromide +/- GCSF +/- docetaxel
Time Frame: 2 years
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Safety will be evaluated by the incidence, severity, duration, causality, seriousness, and type(s) of adverse events
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2 years
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Exploratory biomarker Assessment on CTCs/DTCs
Time Frame: 2 years
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Examples of these may include, but are not limited to: assessment of cell cycle kinetics, apoptosis, PTEN status, MYC alterations, whole genome, whole exome, and transcriptome analysis
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2 years
|
Collaborators and Investigators
Investigators
- Principal Investigator: Kenneth Pienta, MD, Johns Hopkins University
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Neoplasms
- Urogenital Neoplasms
- Neoplasms by Site
- Genital Neoplasms, Male
- Prostatic Diseases
- Prostatic Neoplasms
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Antineoplastic Agents
- Immunologic Factors
- Tubulin Modulators
- Antimitotic Agents
- Mitosis Modulators
- Adjuvants, Immunologic
- Docetaxel
- Lenograstim
Other Study ID Numbers
- J14177
- IRB00054180 (Other Identifier: JHM IRB)
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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