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From SNPedia

23andMe dataI4000377
23andMe searchI4000377
Geno Mag Summary
(D;D) 10 BRCA1 (breast cancer) 185delAG homozygous carrier
(D;I) 10 BRCA1 (breast cancer) 185delAG carrier
(I;I) 0


i4000377, i4000378, i4000379 are markers that influence your carrier status for breast cancer and ovarian cancer.

185delAG BRCA1 i4000377(D;D) or i4000377(D;I)

rs77944974 is the dbSNP rsid for this SNP; it was released in b131 (Build 131) of dbSNP.