Bilateral orchiectomy with or without flutamide for metastatic prostate cancer.
M A Eisenberger, B A Blumenstein, E D Crawford...
https://pubmed.ncbi.nlm.nih.gov/9761805/Actively Recruiting
Led by National Cancer Institute (NCI) · Updated on 2026-07-28
1000
Participants Needed
1
Research Sites
N/A
Total Duration
Researchers are studying men with prostate cancer to better understand why some cases become resistant to hormone therapy, known as androgen-independent prostate cancer. The study focuses on genetic differences that may influence how aggressive the cancer becomes and its progression. This observational study collects genetic information to explore links between gene variations and prostate cancer outcomes. Participants diagnosed with prostate cancer will have blood samples collected at the National Cancer Institutes Medical Oncology Clinic. These samples will be used to extract DNA and white blood cells for genetic testing and creation of cell lines. Some participants may provide additional blood samples if needed. The study may also collect cell-free DNA and RNA from blood at multiple times to support future research, but healthy controls are not part of this comparison. During the study, participants provide blood samples mainly at their initial or follow-up clinic visits after consenting. Researchers will analyze these genetic materials to correlate gene variations with cancer prognosis and tumor characteristics. The study primarily measures the genetic material collected over time from participants. There is no treatment given, and participants continue their usual care outside the study.
CONDITIONS
Collection of Blood From Patients With Prostate Cancer
P
Paula A Carter, R.N.
W
William D Figg, Pharm.D.
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National Cancer Institute (NCI)
Lead Sponsor
You may qualify if you...
You will not qualify if you...
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Varies by participant
Participants provide blood samples during initial or follow-up clinic visits for genetic testing and research.
1 or more visits depending on sample needs
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
1
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M A Eisenberger, B A Blumenstein, E D Crawford...
https://pubmed.ncbi.nlm.nih.gov/9761805/E Ruijter, C van de Kaa, G Miller...
https://pubmed.ncbi.nlm.nih.gov/10047972/M A Eisenberger, R Simon, P J O'Dwyer...
https://pubmed.ncbi.nlm.nih.gov/2409240/National Cancer Institute (NCI)
Lead Sponsor