RATIONALE: Collecting blood samples and health information from patients with invasive breast cancer and from their brothers and sisters over time may help the study of cancer in the future. PURPOSE: This study is collecting blood samples and health information over time from patients with invasive breast cancer and from their brothers and sisters.
OBJECTIVES: * Collect blood samples and medical and background information from patients with invasive breast cancer and their affected or unaffected siblings. OUTLINE: Patients and their siblings undergo blood collection. They also complete medical and background questionnaires. Patients and their siblings are followed annually for 5 years. PROJECTED ACCRUAL: A total of 1,000 patients and siblings will be accrued for this study.
Study Type
OBSERVATIONAL
Enrollment
1,000
GenBasix Incorporated
Duarte, California, United States
RECRUITINGCollection of blood samples and medical and background information
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