Overview
- Background
Prostate cancer is the second leading cause of cancer-related death in American men. The disease recurs in up to 50,000 men each year after their early-stage disease was treated; however, at this stage, imaging scans are often unable to find the disease in the body. In this natural history study, researchers want to find out if a new radiotracer (18F-DCFPyL) injected before positron emission tomography (PET) imaging can help identify sites in the body with cancer.
- Objective
To learn more about how 18F-DCFPyL PET/CT scans detect change over time in men with recurrent prostate cancer.
- Eligibility
Men aged 18 and older with prostate cancer that returned after treatment.
- Design
Participants will be screened with blood tests. They will also have a bone scan and a computed tomography (CT) scans of the chest, abdomen, and pelvis.
Participants will have an initial study visit. They will have a physical exam and blood tests. They will have a PET/CT scan with 18F-DCFPyL. The radiotracer will be injected into a vein; this will take about 20 seconds. The PET/CT scan will be done 1 to 2 hours later. Participants will lie still on a scanner table while a machine captures images of their body. The scan will take 45 minutes.
Participants will return for blood tests every 3 months.
Participants will return for additional scans with 18F-DCFPyL on this schedule:
Once a year if their previous scan was negative for prostate cancer.
Every 6 months if their previous scan was positive for prostate cancer.
Participants may be in the study up to 5 years.
Description
- Background
-
- Prostate cancer is the most common malignancy and the second leading cause of cancer-related deaths in American men.
- About 25,000 to 50,000 men each year develop a rising prostate-specific antigen (PSA) after definitive radiation or surgery for early-stage disease but have negative findings on computed tomography (CT) and Tc99 bone scan (standard imaging in prostate cancer).
- The recent Food and Drug Administration (FDA) approval of 18F-DCFPyL PET imaging provides an opportunity to locate micrometastatic lesions in patients with recurrent disease.
- It is unknown how these lesions (or prostate cancer) evolve over time in men with positive findings on 18F-DCFPyL PET imaging.
- Objective
-To observe participants with biochemically recurrent prostate cancer for 5 years to understand the evolution of 18F-DCFPyL PET lesions in this population.
- Eligibility
-
- History of primary treatment for prostate cancer (either surgery or radiation).
- PSA >= 0.50, and testosterone >100.
- Age >=18 years.
- No evidence of metastatic soft tissue disease on CT scan (or MRI), or bone lesions on bone scan.
- No androgen deprivation therapy (ADT), no systemic therapy within the 6 months before the study intervention, and no prostatectomy within 1 year before the study intervention.
- Design
-
- Eligible participants will have clinical evaluations and imaging studies. Participants with negative findings on initial/following 18F-DCFPyL scan(s) will be invited approximately every year (+/-12 weeks) for follow-up imaging studies (including 18F-DCFPyL PET scans). Participants with positive findings on initial/following 18F-DCFPyL scan(s) will be invited approximately every 6 months (+/-8 weeks) for repeat scans, not to exceed 2 scans per year.
- After the initial evaluation, participants will be invited to NIH approximately every 3 months (+/- 4 weeks) for PSA testing.
Eligibility
- INCLUSION CRITERIA:
- History of primary treatment for prostate cancer (either surgery or radiation)
- Serum PSA >= 0.50
- Serum testosterone >100
- Age >=18 years
- Men must agree to use highly effective contraception (surgical sterilization) for 7 days after every study agent administration. Note: abstinence, defined as no heterosexual sexual intercourse when this is in line with the preferred and usual lifestyle of the subject is also acceptable
- The ability of a participant to understand and the willingness to sign a written informed consent document
EXCLUSION CRITERIA:
-Evidence of soft tissue disease on CT scan (or magnetic resonance imaging [MRI] as clinically indicated).
NOTE: Lymph nodes <= 1.5 cm in the shortest dimension are allowed.
- Evidence of bone lesions on Tc99 bone scan
- Prostatectomy within 1 year before the study intervention
- Androgen deprivation therapy (ADT) within the 6 months before the study intervention
- Systemic therapy for prostate cancer within the 6 months before the study intervention