rs2266782
A SNP in the FMO3 gene on chromosome 1. Its most notable genotype is G;G: common in clinvar
- Gene
- FMO3
- Location
- Chr 1171,107,825 (GRCh38)
- Highest magnitude
- 0.0Typical
- Tested on
- 23andMe, AncestryDNA, FamilyTreeDNA
- Minor allele frequency
- 35%
Genotypes
As shown in 23andMe and AncestryDNA files.
On SNPedia: (G;G). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.
Frequency
Share of each genotype in 11 HapMap populations.
- AverageG;G 43%
- European ancestry (Utah)G;G 36%
- Han Chinese (Beijing)G;G 66%
- Japanese (Tokyo)G;G 64%
- Yoruba (Nigeria)G;G 26%
- African ancestry (Southwest US)G;G 32%
- Chinese (Denver)G;G 61%
- Gujarati IndianG;G 52%
- Luhya (Kenya)G;G 17%
- Mexican ancestry (Los Angeles)G;G 48%
- Maasai (Kenya)G;G 33%
- TuscanG;G 41%
Related
Other FMO3 SNPs
- rs61753344T;Ttrimethylaminuria & possible related issuesImportant
- rs72549320A;Atrimethylaminuria & possible related issues; see discussionWorth knowing
- rs72549321A;Atrimethylaminuria & possible related issues; see discussionWorth knowing
- rs72549322G;Gtrimethylaminuria & possible related issues; see discussionWorth knowing
- rs72549323C;Cpossible trimethylaminuria; see discussionWorth knowing
- rs72549326T;Ttrimethylaminuria & possible related issues; see discussionWorth knowing
- rs72549330T;Ttrimethylaminuria & related issues; see discussionWorth knowing
- rs72549331T;Ttrimethylaminuria & related issues; see discussionWorth knowing
Genosets
Genosets combine several genotypes. Twofold checks them in your report.
Notes
From SNPedia
Notes
Note:Minor allele has too high a frequency to truly be pathogenic, despite ClinVar designation.
Source and license
Adapted from rs2266782 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.