Rs1801516

This SNP lies within the gene coding for ATM (Ataxia telegensia mutated), a main role of which is the repair of double-stranded DNA breaks. As such SNPs within this gene have been associated with susceptibility to cancer.

Rs1801516(A,A) leads to homozygous expression of ATM(D1853N). Homozygotes for this mutation have been associated with increased likelihood of pancreatic cancer (OR, 2.55; 95% CI, 1.08-6.00; P = 0.032).

Despite early reports, the role of Rs1801516 in breas cancer is unclear. A meta-analysis concluded that this mutation was not a risk factor for developing breast cancer (GA vs GG:OR=1.18 (95%CI 0.90-1.53); AA vs GG:OR=0.77 (95%CI 0.58-1.03) . Similarly the (A,A) variant has been reported to be protective against Melanoma development (p=3.4&#215;10&#8722;9, OR=0.84 overall).