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Overview
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The BRCA‐1gene codes for a nuclear phosphoprotein that plays a role in maintaininggenomic stability and acts as a tumor suppressor. The normal gene plays a role inrepairing breaks in DNA. If a mutation occurs in this gene the repair function maybecome disabled thus leading to more DNA replication errors and neoplastic growth.Current findings suggest that BRCA‐1 may play an as yet undefined protective role incells, as it is strongly expressed in epithelial cells undergoing high levels ofproliferation in association with differentiation. Additional findings have determinedthat complete loss of BRCA‐1 nuclear expression in breast cancer and the correlationwith poor prognostic markers imply that the altered BRCA‐1 phenotype may providean added prognostic parameter for breast cancer and could be applied for a potentialrapid screening technique to identify BRCA‐1 mutations
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Overview