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We intend to validate 18F-DCFPyL for imaging patients with metastatic, castrate-resistant PCa (CRPC), so that it may be used to full advantage in supporting existing and emerging therapies for a spectrum of patients suffering from PCa. In this study we will image patients with CRPC undergoing second-line anti-androgen therapy (enzalutamide or abiraterone) using 18F-DCFPyL-PET/CT for detection of metastases and therapeutic monitoring, with correlation to standard-of-care conventional imaging modalities (CIM) (CT, bone scan) and clinical follow-up.
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Inclusion criteria
Willing and able to provide written informed consent
Age ≥ 18 years and male
Histologically or cytologically confirmed adenocarcinoma of the prostate without neuroendocrine differentiation or small cell histology
Patients starting abiraterone (but naïve to enzalutamide) or starting enzalutamide (but naïve to abiraterone)
Prior docetaxel-based chemotherapy is permitted but not required
Documented metastatic prostate cancer progression as assessed by the treating oncologist with either one or both of the following:
Ongoing androgen deprivation with serum testosterone < 50 ng/dL (< 1.7 nM)
Eastern Cooperative Oncology Group (ECOG) performance status of ≤ 2
Hemoglobin ≥ 90 g/L independent of transfusion
Platelet count ≥ 100,000/μL
Serum albumin ≥ 30 g/L
Serum creatinine < 1.5 x ULN or a calculated creatinine clearance ≥ 60 mL/min
Serum potassium ≥ 3.5 mmol/L
Exclusion criteria
Serious or uncontrolled co-existent non-malignant disease, including active and uncontrolled infection
Abnormal liver functions consisting of any of the following:
Uncontrolled hypertension (systolic BP ≥ 160 mmHg or diastolic BP ≥ 95 mmHg)
Active or symptomatic viral hepatitis or chronic liver disease
History of pituitary or adrenal dysfunction
Clinically significant heart disease as evidenced by myocardial infarction, or arterial thrombotic events in the past 6 months, severe or unstable angina, or New York Heart Association (NYHA) Class III or IV heart disease or cardiac ejection fraction measurement of < 50 % at baseline
Other malignancy, except non-melanoma skin cancer, with a ≥ 30% probability of recurrence within 12 months
Known brain metastasis
History of gastrointestinal disorders (medical disorders or extensive surgery) which may interfere with the absorption of orally administered hormonal agents.
Acute toxicities due to prior chemotherapy and/or radiotherapy that have not resolved to a NCI CTCAE (version 4.0) grade of ≤ 1; chemotherapy-induced alopecia and grade 2 peripheral neuropathy are allowed
Current enrollment in an investigational drug or device study, or participation in such a study within 30 days of first administration of the hormonal agent.
Condition or situation which, in the investigator's opinion, may put the patient at significant risk, may confound the study results, or may interfere significantly with patient's participation in the study
Not willing to comply with the procedural requirements of this protocol
Patients who have partners of childbearing potential who are not willing to use a method of birth control with adequate barrier protection as determined to be acceptable by the principal investigator and sponsor during the study and for 13 weeks after last study drug administration
Condition or situation which, in the investigator's opinion, may put the patient at significant risk, may confound the study results, or may interfere significantly with patient's participation in the study
18 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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