Variant "BRCA2:rs895819"
Search results: 2 records
Variant information
Gene:
BRCA2 
Variant:
BRCA2:rs895819 
dbSNP ID:
rs895819  
GWAS trait:
no data 
Modifier statisitcs
Record:
2 
Disorder:
2 
Reference:
1 
Effect type:
Expressivity(2)  
Modifier effect:
Risk factor(2)  
Details：
  • Target disease:
    Breast Cancer (DOID_1612)
    Effect type:
    Expressivity 
    Modifier effect:
    Risk factor 
    Evidence:
    P=0.007 
    Effect:
    Heterozygotes of the rs895819 SNP had an 50% reduced risk for developing breast/ovarian cancer
    Reference:
    PMID19950226
    Title:
    Single nucleotide polymorphisms in miRNA binding sites and miRNA genes as breast/ovarian cancer risk modifiers in Jewish high-risk women.
    Species studied:
    Human
    Abstract:
    We hypothesized that aberrant gene silencing by miRNA may affect mutant BRCA penetrance. To test this notion, frequency of single nucleotide polymorphisms (SNPs; n = 42) within predicted miRNA binding sites or miRNA precursors were determined and compared in 363 BRCA1 mutation carriers: asymptomatic (n = 160), breast cancer (n = 140) and ovarian cancer (n = 63) patients, and in 125 BRCA2 mutation carriers: asymptomatic (n = 48), breast cancer (n = 58) and ovarian cancer (n = 19) patients. Overall, 16 of 42 SNPs were polymorphic, 11 had a minor allele frequency greater than 5% and 9 of them maintained the Hardy-Weinberg Equilibrium. Based on Cox regression and Kaplan-Meier analyses, statistically significant differences were noted in BRCA2 mutation carriers by health status in 3 SNPs: CC homozygosity at rs6505162 increased ovarian cancer risk (RR 2.77; p = 0.028; 95% CI, 1.11-6.9); heterozygote SNP carriers of rs11169571 had an approximately 2 fold increased risk for developing breast/ovarian cancer, whereas heterozygotes of the rs895819 SNP had an approximately 50% reduced risk for developing breast/ovarian cancer. This study provides preliminary evidence for another regulatory level of penetrance of deleterious mutations in cancer predisposition genes.
  • Target disease:
    Ovarian Cancer (DOID_2394)
    Effect type:
    Expressivity 
    Modifier effect:
    Risk factor 
    Evidence:
    P=0.007 
    Effect:
    Heterozygotes of the rs895819 SNP had an 50% reduced risk for developing breast/ovarian cancer
    Reference:
    PMID19950226
    Title:
    Single nucleotide polymorphisms in miRNA binding sites and miRNA genes as breast/ovarian cancer risk modifiers in Jewish high-risk women.
    Species studied:
    Human
    Abstract:
    We hypothesized that aberrant gene silencing by miRNA may affect mutant BRCA penetrance. To test this notion, frequency of single nucleotide polymorphisms (SNPs; n = 42) within predicted miRNA binding sites or miRNA precursors were determined and compared in 363 BRCA1 mutation carriers: asymptomatic (n = 160), breast cancer (n = 140) and ovarian cancer (n = 63) patients, and in 125 BRCA2 mutation carriers: asymptomatic (n = 48), breast cancer (n = 58) and ovarian cancer (n = 19) patients. Overall, 16 of 42 SNPs were polymorphic, 11 had a minor allele frequency greater than 5% and 9 of them maintained the Hardy-Weinberg Equilibrium. Based on Cox regression and Kaplan-Meier analyses, statistically significant differences were noted in BRCA2 mutation carriers by health status in 3 SNPs: CC homozygosity at rs6505162 increased ovarian cancer risk (RR 2.77; p = 0.028; 95% CI, 1.11-6.9); heterozygote SNP carriers of rs11169571 had an approximately 2 fold increased risk for developing breast/ovarian cancer, whereas heterozygotes of the rs895819 SNP had an approximately 50% reduced risk for developing breast/ovarian cancer. This study provides preliminary evidence for another regulatory level of penetrance of deleterious mutations in cancer predisposition genes.