rs397507830
A SNP in the BRCA2 gene on chromosome 13. Its most notable genotype is -;CTTA: BRCA2 variant considered pathogenic for breast cancer
- Gene
- BRCA2
- Location
- Chr 1332,326,595 (GRCh38)
- Highest magnitude
- 6.0Very important
- Tested on
- AncestryDNA
Genotypes
As shown in 23andMe and AncestryDNA files.
- -;-Goodcommon in clinvar
- -;CTTAMost notableBadBRCA2 variant considered pathogenic for breast cancer
- -;TGAGBadBRCA2 variant considered pathogenic for breast cancer
- A;AGoodcommon in clinvar
On SNPedia: (-;-), (-;CTTA), (-;TGAG), (A;A). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.
Related
Other BRCA2 SNPs
- i5009091D;Ilikely to be BRCA2 variant pathogenic for breast cancerVery important
- rs4987049A;CBRCA2 variant considered pathogenic for breast cancerVery important
- rs11571658-;TTBRCA2 variant considered pathogenic for breast cancerVery important
- rs28897743A;Gconsidered a causal BRCA2 breast cancer mutationVery important
- rs28897746C;TBRCA2 variant considered pathogenic for breast cancerVery important
- rs28897756A;ABRCA2, breast cancer mutationVery important
- rs41293477G;TBRCA2 variant considered pathogenic for breast cancerVery important
- rs41293489C;GBRCA2 variant considered pathogenic for breast cancerVery important
Notes
From SNPedia
Notes
Two different insertion mutations are possible at this location in the BRCA2 gene: * c.610_613dupCTTA (p.Ser205Thrfs) * c.613_614insTGAG (p.Ser205Metfs)
-;CTTA
See details via ClinVar link on main SNP/rs# page.
-;TGAG
See details via ClinVar link on main SNP/rs# page.
Source and license
Adapted from rs397507830 on SNPedia, using a snapshot taken October 16, 2026. SNPedia content is shared under CC BY-NC-SA 3.0 US, and this page is shared under the same license.
SNPedia is a community-edited wiki. Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice. Magnitude is a community rating of how interesting a genotype is, not a risk score.