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Mutation analysis of the BRCA2 gene in 49 site-specific breast cancer families.

Abstract：

:The hereditary breast cancer gene BRCA2 was recently cloned and is believed to account for almost half of site-specific breast cancer families and the majority of male breast cancer families. We screened 49 site-specific breast cancer families for mutations in the BRCA2 gene using single strand conformation analysis (SSCA) followed by direct sequencing. We found mutations in eight families, including all four families with male breast cancer. The eight mutations were small deletions with the exception of a single nonsense mutation, an all were predicted to interrupt the BRCA2 coding sequence and to lead to a truncated protein product. Other factors which predicted the presence of a BRCA2 mutation included a case of breast cancer diagnosed at age 35 or below (P = 0.01) and a family history of pancreatic cancer (P = 0.03). Two mutations were seen twice, including a 8535delAG, which was detected in two French Canadian families. Our results suggest the possibility that the proportion of site-specific breast cancer families attributable to BRCA2 may be overestimated.

journal_name

Nat Genet

journal_title

Nature genetics

authors

Phelan CM,Lancaster JM,Tonin P,Gumbs C,Cochran C,Carter R,Ghadirian P,Perret C,Moslehi R,Dion F,Faucher MC,Dole K,Karimi S,Foulkes W,Lounis H,Warner E,Goss P,Anderson D,Larsson C,Narod SA,Futreal PA

doi

10.1038/ng0596-120

subject

Has Abstract

pub_date

1996-05-01 00:00:00

pages

120-2

issue

1

eissn

1061-4036

issn

1546-1718

journal_volume

13

pub_type

杂志文章

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