|(C;T)||2||1.23x risk for colorectal cancer|
|(T;T)||2||1.70x risk for colorectal cancer|
A study of 7000+ UK patients with colorectal cancer identified two SNPs that increase disease risk, one of which is rs4779584. Inheriting the rs4779584(T) risk allele is estimated to increase overall risk odds by 1.26x (CI: 1.19-1.34, p=4x10e-14). When analyzing data between genotypes, the odds ratios reported for heterozygotes was 1.23x (CI:1.13-1.33), and for rs4779584(T;T) homozygotes, 1.70 (CI: 1.41-2.04).[PMID 18084292]
Inheriting the risk variant at both SNP loci (i.e. rs4779584 and rs6983267) is estimated to increase the overall risk of developing colorectal cancer about 3 fold. The authors of this study are quoted as saying that "the lifetime risk [of bowel cancer] is about 5% in the UK so it's going up to 7% or so if you've got both bad copies of a variant." nature
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