Track topics on Twitter Track topics that are important to you
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 is the most common solid tumor in American males and the most common malignancy among men in Western industrialized countries. Widespread testing for early detection of prostate cancer utilizing digital rectal examination and prostate specific antigen (PSA) has led to a significant clinical conundrum. Differentiating organ confined indolent disease from aggressive cancer has been imperfect. Nonetheless, increased detection has led to increased radical prostatectomies. A prevailing goal of the contemporary, ardent research seeks to discover a molecular biomarker for prognostication.
Given the limitations of the current knowledge of the molecular pathology of prostate cancer, there are several viewpoints regarding the process of tumorigenesis. However, a generally accepted hypothetical model describes normal prostatic epithelium progressing to a pre-malignant or low-grade prostatic intraepithelial neoplasia (PIN). Then, after further genetic alterations, a succession of histologically apparent adenocarcinoma--first confined, then metastatic, and finally refractory to hormone treatment ensues. Current molecular research has shown already complex genetics alterations at the high-grade prostatic intraepithelial neoplasia stage. Thus, invasive disease represents amplification or further aberration of precursor events. The seminal event or events have not been recognized and the undiscovered tumor suppressor gene or proto-oncogene may be a principal tumor marker.
The purpose of this study is to identify specific, shared, consistent, chromosomal rearrangements found in metaphase preparations for short-term cultures of pathologically identified and scored primary prostate tumors. These, tumor specimens will be obtained from patients enrolled in protocol (97-C-0147) by the NCI. Fresh tumor, taken from bi-valved specimens with one half undergoing tissue pathology, will be immediately placed in growth media and transferred as a coded specimen as a sample from patients selected and enrolled in protocol (97-C-0147). Informed consent will be obtained by participating investigators in the NCI protocol. The outcome measurement will be the characterization, or failure of characterization, of specific, shared consistent, chromosomal rearrangements. Current molecular cytogenetics technologies, primarily utilizing chromosomal microdissection, will be employed toward this goal. Ultimately, this research may help to focus further molecular studies towards the ultimate goal of finding a unique, cancer specific alteration.
National Human Genome Research Institute (NHGRI)
National Institutes of Health Clinical Center (CC)
Published on BioPortfolio: 2014-08-27T03:56:40-0400
RATIONALE: Vitamin E supplements may stop or delay the development of prostate cancer in patients who are at risk of prostate cancer or who have prostate cancer. It is not yet known which ...
This study is for men who have prostate cancer that has spread outside of the prostate gland and is no longer responding to hormone removal therapy. This study is designed to determine if...
The long-term goal of this proposal is to provide a pre-treatment evaluation that can assist in the rational selection of patients to undergo appropriate and definitive therapy for prostat...
There is controversy concerning the preferred treatment for men with localized prostate cancer with regard to the relative effectiveness of different treatments in controlling the cancer a...
The purpose of this study is to help doctors and patients make better decisions about prostate cancer treatment. This research is being done because we do not know how patient preferences ...
Prostate Cancer is the forth most common type of cancer. Prostate-specific membrane antigen (PSMA) is anchored in the cell membrane of prostate epithelial cells. PSMA is highly expressed on prostate e...
The role of testosterone in the development of prostate cancer and the safety of testosterone therapy (TTh) after prostate cancer treatment, or in the setting of active surveillance, remains controver...
Prostate cancer is the second most common cancer in men, affecting approximately 1.1 million men worldwide. In this way, the study of prostate cancer biopathology and the study of new potential therap...
Prostate cancer is one of the most commonly diagnosed malignancies among men in Western populations. Evidence reported in the literature suggests that zinc may be related to prostate cancer. In this s...
Cannabinoids have demonstrated anticarcinogenic properties in a variety of malignancies, including in prostate cancer. In the present study, we explored the anti-cancer effects of the synthetic cannab...
A glycoprotein that is a kallikrein-like serine proteinase and an esterase, produced by epithelial cells of both normal and malignant prostate tissue. It is an important marker for the diagnosis of prostate cancer.
A synthetic retinoid that is used orally as a chemopreventive against prostate cancer and in women at risk of developing contralateral breast cancer. It is also effective as an antineoplastic agent.
Tissue ablation of the PROSTATE performed by ultrasound from a transducer placed in the RECTUM. The procedure is used to treat prostate cancer (PROSTATIC NEOPLASMS) and benign prostatic hypertrophy (PROSTATIC HYPERPLASIA).
Proteins secreted by the prostate gland. The major secretory proteins from the human prostate gland include PROSTATE-SPECIFIC ANTIGEN, prostate-specific acid phosphatase, prostate-specific membrane antigen, and prostate-specific protein-94.
Tumors or cancer of the PROSTATE.
Bladder Cancer Brain Cancer Breast Cancer Cancer Cervical Cancer Colorectal Head & Neck Cancers Hodgkin Lymphoma Leukemia Lung Cancer Melanoma Myeloma Ovarian Cancer Pancreatic Cancer ...
Cancer is not just one disease but many diseases. There are more than 100 different types of cancer. Most cancers are named for the organ or type of cell in which they start - for example, cancer that begins in the colon is called colon cancer; cancer th...