A Phase 1/1b Study of MEDI3726 in Adults Subjects With Metastatic Castration Resistant Prostate Cancer
Study Details
Study Description
Brief Summary
The purpose of this study is to assess the safety and tolerability, describe the dose-limiting toxicities (DLTs), and determine the maximum tolerated dose (MTD) or maximum administered dose (MAD [in the absence of establishing the MTD]) for single agent MEDI3726 in subjects with mCRPC who have received prior treatment with abiraterone or enzalutamide, with or without a prior taxane-based chemotherapy in the mCRPC setting.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
Phase 1 |
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: Arm A MEDI3726 Post-Chemo |
Biological: MEDI3726 Post-Chemo
Single agent MEDI3726 after abiraterone or enzalutatmide, with a prior taxane-based chemotherapy in the mCRPC setting
|
| Experimental: Arm B MEDI3726 Pre-Chemo |
Biological: MEDI3726 Pre-Chemo
Single agent MEDI3726 after abiraterone or enzalutatmide, without a prior taxane-based chemotherapy in the mCRPC setting
|
| Experimental: Arm C MEDI3726 & Enzalutamide Combo |
Biological: MEDI3726 & Enzalutamide Combo
MEDI3726 in combination with Enzalutatmide after prior treatment with abiraterone, with or without a prior taxane-based chemotherapy in the mCRPC setting
|
Outcome Measures
Primary Outcome Measures
- Occurrence of adverse events (AEs) [From time of informed consent through 90 days after last dose of MEDI3726]
Safety Endpoint
- Occurrence of serious adverse events (SAEs) [From time of informed consent through 90 days after last dose of MEDI3726]
Safety Endpoint
- Occurrence of dose-limiting toxicities (DLTs) [From time of first dose through 21 days after first dose of MEDI3726]
Safety Endpoint
- Number of patients with changes in laboratory parameters from baseline [From time of informed consent through 90 days after last dose of MEDI3726]
Safety Endpoint
- Number of patients with changes in vital signs from baseline [From time of informed consent through 21 days after last dose of MEDI3726]
Safety Endpoint
- Number of patients with changes in electrocardiogram (ECG) results from baseline [From time of informed consent through 21 days after last dose of MEDI3726]
Safety Endpoint
Secondary Outcome Measures
- Response Evaluation Criteria in Solid Tumors (RECIST) response [From time of informed consent through 90 days after last dose of MEDI3726]
Response according to RECIST version 1.1
- PSA50 response [From time of fist dose through at least 12 weeks after first dose of MEDI3726]
Reduction in PSA level of 50% (PSA50) or more compared with baseline
- Circulating Tumor Cell (CTC) response [From time of informed consent through 90 days after last dose of MEDI3726]
Conversion in the CTC count defined as a reduction from ≥ 5 cells/7.5 mL blood to < 5 cells/7.5 mL blood with a confirmatory assessment at least 4 weeks later
- Safety and tolerability of MEDI3726 in combination with Enzalutamide [From time of informed consent through 90 days after last dose of MEDI3726 with enzalutamide]
Measured by occurrence of AEs, SAEs, DLTs and number of patients with changes in laboratory parameters, vital signs, and ECG results from baseline
- MEDI3726 plasma concentrations for pharmacokinetics (PK) [From time of informed consent through 90 days after last dose of MEDI3726]
- MEDI3726 maximum observed concentration for PK [From time of informed consent through 90 days after last dose of MEDI3726]
- MEDI3726 area under the concentration-time curve for PK [From time of informed consent through 90 days after last dose of MEDI3726]
- MEDI3726 clearance for PK [From time of informed consent through 90 days after last dose of MEDI3726]
- MEDI3726 terminal half-life for PK [From time of informed consent through 90 days after last dose of MEDI3726]
- Number and percentage of subjects who develop anti-drug antibodies (ADAs) [From time of informed consent through 90 days after last dose of MEDI3726]
To determine the immunogenicity of MEDI3726
Eligibility Criteria
Criteria
Inclusion Criteria:
-
Age ≥ 18 years at the time of screening.
-
Histologically confirmed diagnosis of metastatic castration-resistant prostate adenocarcinoma (mCRPC).
-
Documented PD in subjects with mCRPC as assessed by the Investigator and defined by at least one of the following according to the PCWG3 criteria:
-
Radiographic progression.
-
PSA progression.
- Prior exposure to abiraterone or enzalutamide of at least 12 weeks in the mCRPC setting.
NOTE: Subjects who have received both abiraterone and enzalutamide in the mCRPC setting are eligible.
- In dose escalation: Prior taxane-based chemotherapy in the mCRPC setting is:
-
Required for Arm A.
-
Excluded for Arm B.
-
Optional for Arm C.
Exclusion Criteria:
-
Subjects with neuroendocrine, neuroendocrine differentiation and/or small cell prostate cancer.
-
The subject has received any conventional or investigational anti-cancer treatment within 21 days before the first dose of investigational product, with the following modifications:
-
At least 14 days before the first dose of investigational product since completion of treatment with abiraterone or enzalutamide
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At least 14 days before the first dose of investigational product since completion of prior taxane-based chemotherapy
-
At least 28 days before the first dose of investigational product since completion of treatment with Radium-223.
-
At least 42 days before the first dose of investigational product since completion of prior bicalutamide and nilutamide treatment.
NOTE: An LHRH agonist or antagonist required for ongoing testosterone suppression will be permitted if Inclusion Criterion is satisfied.
-
Prior exposure to PSMA-directed therapies.
-
Subjects with previous radiotherapy for the treatment of unresectable, locally advanced or metastatic prostate cancer are excluded if:
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More than 25% of marrow-bearing bone has been irradiated.
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The last fraction of radiotherapy has been administered within approximately 2 weeks prior to the first dose of investigational product.
-
Brain metastases that are untreated, symptomatic, or require therapy to control symptoms; or any radiation, surgery, or other therapy to control symptoms from brain metastases within 2 months prior to the first dose of investigational product.
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Subjects with known history of peripheral vasculopathies including, but not limited to, macro and microangiopathies secondary to diabetes, peripheral arteriopathy of any cause, intermittent claudication, repeated and/or non-healing ulcers of any cause.
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Research Site | New Haven | Connecticut | United States | 06519 |
| 2 | Research Site | Sarasota | Florida | United States | 34232 |
| 3 | Research Site | Norfolk | Virginia | United States | 23502 |
| 4 | Research Site | Chur | Switzerland | 7000 | |
| 5 | Research Site | London | United Kingdom | SM2 5PT |
Sponsors and Collaborators
- MedImmune LLC
Investigators
- Study Director: MedImmune LLC, Sponsor GmbH
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- D9320C00001