A Study of AZD4635 With Durvalumab and With Cabazitaxel and Durvalumab in Patients With mCRPC. (AARDVARC)
Progressive Metastatic Castrate-Resistant Prostate Cancer

About this trial
This is an interventional treatment trial for Progressive Metastatic Castrate-Resistant Prostate Cancer focused on measuring Prostate Cancer
Eligibility Criteria
Inclusion Criteria:
- Histologically confirmed adenocarcinoma of the prostate.
- Known castrate-resistant disease.
- Evidence of disease progression ≤6 months.
- Body weight >30 kg at screening.
- Willingness to adhere to the study treatment-specific contraception requirements.
- Adequate bone marrow reserve and organ function.
Adequate organ function for Arm A as demonstrated by all of the following laboratory values:
- Alanine aminotransferase (ALT) ≤2.5 × upper limit of normal (ULN) if no demonstrable liver metastases or ≤5 × ULN in the presence of liver metastases.
- Aspartate aminotransferase (AST) ≤2.5 × ULN if no demonstrable liver metastases or ≤5 × ULN in the presence of liver metastases
- Total bilirubin (TBL) ≤1.5 × ULN
- TBL ≤2.0 × ULN in the case of known Gilbert syndrome with normal direct bilirubin
Participants in Arm A must have received the following prior therapy:
- Maximum of 3 lines of therapy in the mCRPC setting
- Prior therapy with one or more NHAs (eg, abiraterone acetate, enzalutamide, apalutamide, darolutamide) in either hormone-sensitive or hormone-refractory settings
- Prior therapy with one or more lines of taxanes (eg, docetaxel and/or cabazitaxel)
- Alternatively, must be taxane-ineligible
- Prior therapy can be in either the hormone-sensitive or the hormone-refractory setting
Adequate organ function for Arm B as demonstrated by all of the following laboratory values:
- AST and/or ALT ≤1.5 × ULN
- TBL ≤ ULN
- TBL ≤2.0 × ULN in the case of known Gilbert syndrome with normal direct bilirubin
Participants in Arm B must have received the following prior therapy:
- Prior docetaxel (taxane) in either hormone-sensitive or hormone-refractory settings
- Received no prior cytotoxic chemotherapy other than docetaxel for prostate cancer except for estramustine and except adjuvant/neo-adjuvant treatment completed >3 years ago.
- Prior therapy with only one NHAs (eg, abiraterone acetate or enzalutamide; prior apalutamide is not permitted) for treatment of mCRPC in either hormone-sensitive or hormone-refractory settings.
- Be suitable to receive concomitant Granulocyte-colony stimulating factor during all cycles of cabazitaxel.
- Participants who meet inclusion criteria for Arm B will be allocated preferentially to that arm until recruitment to that arm is completed.
Exclusion Criteria:
- Active brain metastases or leptomeningeal metastases.
- There must be no requirement for immunosuppressive doses of systemic corticosteroids for at least 2 weeks prior to study enrollment.
- History of pneumonitis requiring corticosteroids, second malignancy that is progressing and/or received active treatment ≤3 years before the first dose of study intervention, and hypersensitivity to polysorbate-80 if allocated to cabazitaxel.
- As judged by the Investigator, any evidence of severe or uncontrolled systemic diseases.
- Creatinine clearance <40 mL/min (calculated by Cockcroft-Gault equation).
- Prior exposure to immune-mediated therapy including.
- Ongoing treatment with warfarin (Coumadin).
- Major surgery (excluding placement of vascular access) within 4 weeks of the first dose of study intervention.
Sites / Locations
- Research Site
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Arms of the Study
Arm 1
Arm 2
Experimental
Experimental
Arm A: AZD4635 + durvalumab
Arm B: AZD4635 + durvalumab + cabazitaxel
AZD4635 plus durvalumab (Arm A) will consist of participants with mCRPC previously treated with one or more approved NHAs (eg, abiraterone acetate, enzalutamide, apalutamide and/or darolutamide), and one or more taxanes, or participants who are taxane ineligible.
AZD4635 plus durvalumab plus cabazitaxel (Arm B) will consist of participants with mCRPC previously treated with docetaxel and one prior NHA (either abiraterone acetate or enzalutamide but not both (prior apalutamide is not allowed in Arm B).