|
|
Comparative Genetic Study of Susceptibility Genotypes and Protein Expression in Healthy Women, Women at High Risk For Breast Cancer, and Women With Breast Cancer
Alternate Title Comparison of Genes in Healthy Women, Women at High Risk for Breast Cancer, and Women With Breast Cancer
Objectives
Entry Criteria Disease Characteristics:
Prior/Concurrent Therapy: Biologic therapy
Chemotherapy
Endocrine therapy
Radiotherapy
Surgery
Patient Characteristics: Age:
Sex:
Menopausal status:
Performance status:
Life expectancy:
Hematopoietic:
Hepatic:
Renal:
Expected Enrollment 3000A total of 3,000 women (1,000 healthy, 1,000 at high risk for breast cancer, and 1,000 with breast cancer) will be accrued for this study. Outcomes Primary Outcome(s)Risk of breast cancer associated with polymorphisms in genes involved in estrogen metabolism and action as measured by personal health history, cancer family history , risk factor history, food frequency questionnaire, and blood sample at study entry Risk biomarkers as measured by nipple aspirate collection at study entry Outline Participants donate a blood sample and complete an epidemiological, dietary, and family history questionnaire. Participants who have undergone biopsy or surgery for breast cancer are asked to authorize the use of their tissues. Participants who have had a routine film screen mammogram within the past year are asked to submit their most recent mammogram for breast density determination. Participants warm their breasts with a warm moist washcloth over approximately 30 minutes, then undergo nipple fluid aspiration over 15 seconds, up to 5 times per breast. Women who have any active infection or superficial inflammation of the breast or who are currently lactating or less than 6 months post-lactation do not undergo nipple fluid sampling. Restriction fragment length polymorphism analysis, simple tandem repeat polymorphism analysis, automated fluorescent genotyping, and single-stranded conformation polymorphism analysis are used to test for genes associated with the biosynthesis and metabolism of estrogen (COMT1, CYP1A1, CYP1A2, CYP2D6, CYP2E1, CYP3A4, CYP17, CYP19, EPHX1, EPHX2, NAT1, NAT2, NQO1, AHR, UDPGT, GSTA1, GSTA2, GSTA3, GSTM1, GSTM2, GSTM3, GSTM5, GSTP1, GSTT1, GSTT2, GSTX1, and GSTX2). Two-dimensional gel electrophoresis, laser capture microdissection, and surface-enhanced laser desorption ionization spectroscopy are used to test for vitamin D receptor and members of the homocysteine/methionine metabolism family, methylenetetrahydrofolate reductase, methionine synthase, and cystathione beta synthase in nipple fluid, blood, and tissue. Participants do not receive the results of the genetic testing and these results are not kept in their medical records. Trial Lead Organizations NCI - Center for Cancer Research
Note: The purpose of most clinical trials listed in this database is to test new cancer treatments, or new methods of diagnosing, screening, or preventing cancer. Because all potentially harmful side effects are not known before a trial is conducted, dose and schedule modifications may be required for participants if they develop side effects from the treatment or test. The therapy or test described in this clinical trial is intended for use by clinical oncologists in carefully structured settings, and may not prove to be more effective than standard treatment. A responsible investigator associated with this clinical trial should be consulted before using this protocol. Back to Top |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
NCI Home |
Text-Only Version |
Contact Us |
Policies |
Accessibility |
RSS |
Viewing Files |
FOIA |
Site Help |
Site Map
|
A Service of the National Cancer Institute |