rs602662(A;A)
Higher vitamin B12 levels
- Magnitude
- 2.0Worth knowing
- Repute
- Good
- Frequency
- 17%Average of 10 populations
- On SNPedia
- rs602662(A;A)
- Gene
- FUT2
Frequency
Share of people with A;A in each HapMap population.
- European ancestry (Utah)35%
- African ancestry (Southwest US)32%
- Yoruba (Nigeria)27%
- Tuscan26%
- Luhya (Kenya)22%
- Maasai (Kenya)17%
- Mexican ancestry (Los Angeles)10%
- Gujarati Indian4%
- Han Chinese (Beijing)0%
- Japanese (Tokyo)0%
Other genotypes of rs602662
Notes
From SNPedia
The reduced activity of the FUT2 enzyme with the A allele may decrease susceptibility to bacterial infection and indirectly lower the risk of vitamin B12 malabsorption, thereby resulting in higher vitamin B12 concentrations in A allele carriers. PMID 19303062
References
Source and license
Adapted from rs602662(A;A) 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.