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Germline mutations that inactivate BRCA1 are responsible for breast and ovarian cancer susceptibility. One possible outcome of genetic testing for BRCA1 is the finding of a genetic variant of uncertain significance for which there is no information regarding its cancer association. This outcome leads to problems in risk assessment, counseling and preventive care. The purpose of the present study was...
Mutation screening of the breast and ovarian cancer predisposition genes BRCA1 and BRCA2 is becoming an increasingly important part of clinical practice. Classification of rare non-truncating sequence variants in the BRCA1 and BRCA2 genes is problematic because it is not known whether these subtle changes alter function sufficiently to predispose cells to cancer development. Several studies have reported...
According to a recent IARC Working Group report, alcohol consumption is causally related to an increased risk of cancer of the upper aerodigestive tract, liver, colorectum, and female breast [R. Baan, K. Straif, Y. Grosse, B. Secretan, F. El Ghissassi, V. Bouvard, A. Altieri, V. Cogliano, Carcinogenicity of alcoholic beverages, Lancet Oncol. 8 (2007) 292–293]. Several lines of evidence indicate that...
Mitochondrial DNA 4977-bp deletion (common deletion) has been associated with ageing human tissues and a few studies have demonstrated their presence in breast cancer patients too; however, no previous publication evaluated both topics in the same samples group. First, when analyzing 95 breast cancer patients, we found a higher percentage of cases carrying the deletion in non-tumoral tissue 73.68%...
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