Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2001-9-5
pubmed:abstractText
RAD51 colocalizes with both BRCA1 and BRCA2, and genetic variants in RAD51 would be candidate BRCA1/2 modifiers. We searched for RAD51 polymorphisms by sequencing 20 individuals. We compared the polymorphism allele frequencies between female BRCA1/2 mutation carriers with and without breast or ovarian cancer and between population-based ovarian cancer cases with BRCA1/2 mutations to cases and controls without mutations. We discovered two single nucleotide polymorphisms (SNPs) at positions 135 g-->c and 172 g-->t of the 5' untranslated region. In an initial group of BRCA1/2 mutation carriers, 14 (21%) of 67 breast cancer cases carried a "c" allele at RAD51:135 g-->c, whereas 8 (7%) of 119 women without breast cancer carried this allele. In a second set of 466 mutation carriers from three centers, the association of RAD51:135 g-->c with breast cancer risk was not confirmed. Analyses restricted to the 216 BRCA2 mutation carriers, however, showed a statistically significant association of the 135 "c" allele with the risk of breast cancer (adjusted odds ratio, 3.2; 95% confidence limit, 1.4-40). BRCA1/2 mutation carriers with ovarian cancer were only about one half as likely to carry the RAD51:135 g-->c SNP. Analysis of the RAD51:135 g-->c SNP in 738 subjects from an Israeli ovarian cancer case-control study was consistent with a lower risk of ovarian cancer among BRCA1/2 mutation carriers with the "c" allele. We have identified a RAD51 5' untranslated region SNP that may be associated with an increased risk of breast cancer and a lower risk of ovarian cancer among BRCA2 mutation carriers. The biochemical basis of this risk modifier is currently unknown.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1055-9965
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
955-60
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:11535547-Adult, pubmed-meshheading:11535547-Aged, pubmed-meshheading:11535547-Aged, 80 and over, pubmed-meshheading:11535547-Australia, pubmed-meshheading:11535547-BRCA1 Protein, pubmed-meshheading:11535547-BRCA2 Protein, pubmed-meshheading:11535547-Breast Neoplasms, pubmed-meshheading:11535547-Case-Control Studies, pubmed-meshheading:11535547-DNA-Binding Proteins, pubmed-meshheading:11535547-Female, pubmed-meshheading:11535547-Genetic Predisposition to Disease, pubmed-meshheading:11535547-Humans, pubmed-meshheading:11535547-Israel, pubmed-meshheading:11535547-Jews, pubmed-meshheading:11535547-Middle Aged, pubmed-meshheading:11535547-Neoplasm Proteins, pubmed-meshheading:11535547-Ovarian Neoplasms, pubmed-meshheading:11535547-Polymorphism, Genetic, pubmed-meshheading:11535547-Rad51 Recombinase, pubmed-meshheading:11535547-Transcription Factors, pubmed-meshheading:11535547-United States
pubmed:year
2001
pubmed:articleTitle
A single nucleotide polymorphism in the 5' untranslated region of RAD51 and risk of cancer among BRCA1/2 mutation carriers.
pubmed:affiliation
Laboratory of Population Genetics, National Cancer Institute, NIH, Bethesda, Maryland 20892, USA.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Multicenter Study