Analysis of Prostate Cancer Short-Term Cultures Using Molecular Cytogenetic Methods

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00022919
Recruitment Status : Completed
First Posted : August 17, 2001
Last Update Posted : March 4, 2008
Information provided by:
National Institutes of Health Clinical Center (CC)

Brief Summary:

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.

Condition or disease
Prostate Cancer

Detailed Description:

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.

Study Type : Observational
Enrollment : 150 participants
Official Title: Analysis of Prostate Cancer Short-Term Cultures Utilizing Molecular Cytogenetic Methods
Study Start Date : August 2001
Study Completion Date : August 2004

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Prostate Cancer

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No


Only patients who have met pathologic criteria for prostate intraepithelial neoplasia or higher (determined by pathologists included in the NCI protocol) will be included for entry into this protocol.


No prisoners, decisionally impaired, healthy volunteers, or lab personnel will be included in this study.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00022919

United States, Maryland
National Human Genome Research Institute (NHGRI)
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Human Genome Research Institute (NHGRI)

Publications: Identifier: NCT00022919     History of Changes
Other Study ID Numbers: 010212
First Posted: August 17, 2001    Key Record Dates
Last Update Posted: March 4, 2008
Last Verified: August 2004

Keywords provided by National Institutes of Health Clinical Center (CC):
Prostate Adenocarcinoma
Prostate Intraepithelial Neoplasia
Prostate Cancer

Additional relevant MeSH terms:
Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Genital Diseases, Male
Prostatic Diseases