rs909525

A SNP in the MAOA gene on chromosome X. Its most notable genotype is C;T: Probably one Warrior Gene and one non-Warrior Gene.

Gene
MAOA
Location
Chr X43,693,955 (GRCh38)
Highest magnitude
2.0Worth knowing
Tested on
23andMe, AncestryDNA
Minor allele frequency
38%

Genotypes

Plus strand, as in 23andMe and AncestryDNA files.

  1. T;TGoodProbably MAOA 4 or 5 repeats: not Warrior Gene.Minor · 1.247% of people
  2. C;TMost notableBadProbably one Warrior Gene and one non-Warrior Gene.Worth knowing · 2.021% of people
  3. C;CBadPerhaps MAOA 3 repeats: Warrior Gene?Worth knowing · 2.032% of people

SNPedia records rs909525 on the minus strand: (A;A), (A;G), (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.

  • AverageT;T 47% C;T 21% C;C 32%
  • European ancestry (Utah)T;T 58% C;T 20% C;C 22%
  • Han Chinese (Beijing)T;T 27% C;T 23% C;C 50%
  • Japanese (Tokyo)T;T 27% C;T 28% C;C 45%
  • Yoruba (Nigeria)T;T 66% C;T 15% C;C 19%
  • African ancestry (Southwest US)T;T 46% C;T 33% C;C 21%
  • Chinese (Denver)T;T 25% C;T 21% C;C 54%
  • Gujarati IndianT;T 26% C;T 16% C;C 58%
  • Luhya (Kenya)T;T 76% C;T 13% C;C 12%
  • Mexican ancestry (Los Angeles)T;T 59% C;T 22% C;C 19%
  • Maasai (Kenya)T;T 55% C;T 21% C;C 24%
  • TuscanT;T 59% C;T 16% C;C 26%

Other MAOA SNPs

All MAOA SNPs

Genosets

Genosets combine several genotypes. Twofold checks them in your report.

Notes

From SNPedia

Show notes, about 240 words

This is the best proxy for the number of repeats of the MAOA warrior gene. In 105 samples (69 males, 36 females) from the Stanley foundation brain collection, it was always A in people with the 4 or 5 repeat non-Warrior version and always G in people with the 3 repeat Warrior version. The combination rs909525(A) AND rs6323(T) AND rs3027399(G) indicate specifically that it is the 5 repeat version. The 2 repeat version and the 3.5 repeat version weren't mentioned. mentioned as potentially affecting white matter volume, sample size tiny

T;T

People with this SNP usually also have either the 4 or 5 repeat (non-Warrior) version of MAOA which makes them less aggressive and less anti-social. If you are male, you inherited this from your mother. Do not confuse this with the completely different warrior/worrier gene.

C;T

Women with this combination usually have the 3 repeat MAOA Warrior Gene on one X chromosome and the 4 or 5 repeat MAOA non-Warrior Gene on the other X chromosome. The 3 repeat Warrior Gene makes people more aggressive and antisocial. If you are a man, there was a problem reading this SNP (or you are XXY).

C;C

People with this SNP may also have the 3 repeat version of MAOA, known as the Warrior Gene. It makes people more aggressive and antisocial. If you are male, you inherited this from your mother and your sons won't get it from you. Do not confuse this with the completely different warrior/worrier COMT gene.

Source and license

Adapted from rs909525 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.