rs2031920
A SNP in the CYP2E1 gene on chromosome 10. Its most notable genotype is C;C: normal
- Gene
- CYP2E1
- Location
- Chr 10133,526,341 (GRCh38)
- Highest magnitude
- 0.0Typical
- Tested on
- 23andMe, AncestryDNA, FamilyTreeDNA
- Minor allele frequency
- 9%
Genotypes
As shown in 23andMe and AncestryDNA files.
- C;CMost notableGoodnormal
- C;TNot ratedcarrier of one CYP2E1_-1055C>T allele
- T;TNot ratedCYP2E1_-1055C>T homozygote
On SNPedia: (C;C), (C;T), (T;T). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.
Frequency
Share of each genotype in 8 HapMap populations.
- AverageC;C 80% C;T 18% T;T 2%
- European ancestry (Utah)C;C 88% C;T 12% T;T 0%
- Han Chinese (Beijing)C;C 59% C;T 33% T;T 9%
- Japanese (Tokyo)C;C 66% C;T 30% T;T 4%
- Yoruba (Nigeria)C;C 100% C;T 0% T;T 0%
- Chinese (Denver)C;C 65% C;T 31% T;T 4%
- Gujarati IndianC;C 98% C;T 2% T;T 0%
- Mexican ancestry (Los Angeles)C;C 76% C;T 22% T;T 2%
- TuscanC;C 90% C;T 10% T;T 0%
Related
Other CYP2E1 SNPs
- rs2070672G;GCYP2E1*7_-352A>G homozygoteWorth knowing
- rs2070676G;GCYP2E1*1B homozygoteWorth knowing
- rs2515641T;TCYP2E1_10463T>C(F421F) homozygoteWorth knowing
- rs915908G;Gcommon in complete genomicsTypical
- rs915909C;CnormalTypical
- rs2070673A;ACYP2E1*7_-333T>A homozygoteTypical
- rs3813865G;Gcommon in complete genomicsTypical
- rs3813867C;CCYP2E1_-1295G>C homozygoteTypical
Notes
From SNPedia
Notes
rs2031920 is a SNP in the CYP2E1 gene. The rs2031920(T) allele defines the CYP2E1_-1055C>T variant.
Source and license
Adapted from rs2031920 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.