8 Clinical Trials for Various Conditions
The purpose of this study was to determine whether the daily consumption of decaffeinated green tea catechins (Polyphenon E®) for 1 year reduces the rate of progression to prostate cancer (PCa) in men diagnosed with HGPIN or ASAP. The aim was to recruit and treat 240 (120 men/arm) men diagnosed with the prostate condition HGPIN or ASAP with a capsule form of standardized green tea extract called Polyphenon E or placebo for a 12-month period and see if it can prevent progression of the prostate condition to prostate cancer. Investigators wanted to see if Polyphenon E reduces lower urinary tract symptoms and if this can be taken safely over one year. Investigators wanted to study how Polyphenon E is able to slow the progression to prostate cancer, or the mechanism of action of Polyphenon E. If the safety and the effects of Polyphenon E on slowing down the progression of prostate cancer is shown in our study, this will be a safe way of treating men who are at high risk or men like you who have a prostate condition that increases your chances of getting prostate cancer, so that we can prevent prostate cancer in the future.
Prostatic Hyperplasia
RATIONALE: Chemoprevention is the use of certain drugs to keep cancer from forming, growing, or coming back. The use of calcitriol may prevent prostate cancer. It is not yet known whether calcitriol is more effective than observation in preventing prostate cancer. PURPOSE: This randomized phase II trial is studying how well calcitriol works in preventing prostate cancer in patients with prostatic intraepithelial neoplasia.
Precancerous/Nonmalignant Condition, Prostate Cancer
The purpose of this study is to determine if toremifene citrate is effective and safe in the prevention of prostate cancer in men who have been diagnosed with high grade prostatic intraepithelial neoplasia (PIN).
Preneoplastic Conditions, Prostatic Intraepithelial Neoplasia
If you are a male 30 years of age or older and have a positive diagnosis of high grade (II or III) prostate Intraepithelial Neoplasia (PIN) or have had an abnormal/suspicious prostate biopsy, you may be eligible for this study. This is a study of an investigational medication that may reduce high grade PIN and prevent the occurrence of prostate cancer. This study is currently enrolling up to 500 men at approximately 60 locations in the United States.
Prostatic Intraepithelial Neoplasia
The purpose of this research study is to compare the effects of a lycopene supplement made from tomatoes to a placebo (a capsule with no active ingredients) in men who have abnormal cells in the prostate, but have not yet had cancer detected. This study will allow us to see if taking lycopene for six months leads to favorable changes in abnormal prostate tissue and in chemicals measured in the blood that go along with a higher risk of developing cancer.
Intraepithelial Prostatic Neoplasia, Prostatic Neoplasms
This research study is creating a way to collect and store specimens and information from participants who may be at an increased risk of developing cancer, or has been diagnosed with an early phase of a cancer or a family member who has a family member with a precursor condition for cancer. * The objective of this study is to identify exposures as well as clinical, molecular, and pathological changes that can be used to predict early development of cancer, malignant transformation, and risks of progression to symptomatic cancer that can ultimately be fatal. * The ultimate goal is to identify novel markers of early detection and risk stratification to drive potential therapeutic approaches to intercept progression to cancer.
Cancer Risk, Cancer Predisposition Syndrome, Hereditary Cancer Prediction, Childhood Cancer Survivors, Adult Cancer Survivors, IARC Carcinogens, Smoking History, Lung Cancer, Ductal/Lobular Carcinoma, Barrett Esophagus, Pancreatic Precursor Lesions, Colonic Dysplasia/Adenomata, Non-Alcoholic Fatty Liver Disease, Non Alcoholic Steatohepatitis, Cirrhosis, High Grade Prostatic Epithelial Neoplasia, High-grade Bladder Urothelial Dysplasia/Carcinoma in Situ, Adenomatous Hyperplasia, High-risk Oral Precancerous Diseases, Melanocytic Lesion, Adult, Hematologic Malignancy, Lung; Node, Serous Tubal Intraepithelial Carcinoma, Endometrial Intraepithelial Neoplasia, Cervical and Endocervical Carcinoma in Situ, Vulvar Intraepithelial Neoplasia, Nephrogenic Rests, Benign Bone Lesions With Risk of Malignant Degeneration, Giant Cell Tumor, Osteochondroma, Spitz Nevus
RATIONALE: Studying samples of blood in the laboratory from patients who are at high risk of developing prostate cancer may help doctors identify biomarkers related to cancer. PURPOSE: This research study is looking at blood samples from patients at high risk of developing prostate cancer and from healthy male participants.
Precancerous Condition, Prostate Cancer
This study will examine prostate tumor tissue cultures to try to identify genetic abnormalities that contribute to the cause or progression of the disease. Patients with prostate cancer enrolled in the National Cancer Institute protocol 97-C-0147 (Collection of Serum and Tissue Samples from Patients with Biopsy-Proved or Suspected Malignant Disease) may be eligible for this study. Specimens for tissue culture for this study will be obtained from tumors surgically removed from patients participating in NCI protocol 97-C-0146. The findings of this study may lead to better methods of predicting the course of disease in individual patients.
Prostate Cancer