rs4855271
A SNP in the SI gene on chromosome 3. Its most notable genotype is C;C: common in clinvar
- Gene
- SI
- Location
- Chr 3164,996,744 (GRCh38)
- Highest magnitude
- 0.0Typical
- Tested on
- 23andMe, FamilyTreeDNA
- Minor allele frequency
- 7%
Genotypes
As shown in 23andMe and AncestryDNA files.
On SNPedia: (C;C), (T;T). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.
Frequency
Share of each genotype in 5 HapMap populations.
- AverageC;C 8% T;T 73%
- European ancestry (Utah)C;C 2% T;T 89%
- Han Chinese (Beijing)C;C 2% T;T 89%
- Japanese (Tokyo)C;C 0% T;T 91%
- Yoruba (Nigeria)C;C 0% T;T 94%
- Mexican ancestry (Los Angeles)C;C 36% T;T 0%
Source and license
Adapted from rs4855271 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.