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DNA Traits · Mind & behaviour

Extraversion questionnaire association

A questionnaire score for how outgoing and sociable people describe themselves.

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Evidence · Replicated

What the research found

In the cited research, the T allele at rs3764002 was associated with lower extraversion questionnaire scores in the studied cohorts.

CC
Higher score
CT
Middle
TT
Lower score
Slight effect
Evidence
Multi-cohort GWAS at a previously reported WSCD2 locus
Who was studied
European-ancestry multi-cohort analyses including the US Million Veteran Program; the MVP component was predominantly older men
1000 Genomes Project

How common each genotype is

How common each genotype is in the 1000 Genomes Project, by region
RegionCCHigher scoreCTMiddleTTLower score
All regions2,504 people59%30%11%
Africa661 people97%2%<1%
The Americas347 people70%27%3%
East Asia504 people21%49%30%
Europe503 people54%39%6%
South Asia489 people44%42%14%

Among the 2,504 people of the 1000 Genomes Project, in five world regions. These percentages describe groups of people, never anyone’s chance of having a trait.

Ancient genomes

Through time

How often the studied letter was read in ancient people, era by era, in the region chosen.

Region
Through time: Europe
Before farmingbefore 6500 BC46%29 of 63 copies read
First farmers6500 to 3000 BC37%399 of 1,066 copies read
Bronze Age3000 to 1200 BC32%327 of 1,017 copies read
Iron Age and Antiquity1200 BC to AD 60029%355 of 1,244 copies read
Middle AgesAD 600 to 150030%187 of 620 copies read
Today1000 Genomes26%261 of 1,006 copies

Neanderthal and Denisovan genomes

Altai Neanderthal
No copies
Vindija Neanderthal
No copies
Chagyrskaya Neanderthal
No copies
Denisovan
No copies

Neanderthals and Denisovans carried the other letter, so this letter is younger than our split with them.

For most ancient people only one of their two copies can be read, so these counts are copies read, not people. Close relatives, repeated samples and samples the archive marks as unreliable are left out. Damage in old DNA can fake this letter, so it is counted only from samples treated to remove that damage and from high-quality genomes. Ancient genomes from the Allen Ancient DNA Resource (AADR v66): 15,136 people.
rs3764002

The marker

Gene or region
WSCD2 region
Marker
rs3764002
Location
Chromosome 12 · GRCh37 108,618,630 · GRCh38 108,224,853
Letters studied
C and T, with T as the studied allele

A DNA Traits report reads this marker in your raw DNA file and shows which of the three genotypes is yours, with how common it is. It counts the copies of the studied allele; it does not measure the trait itself.

Marker
WSCD2 region · rs3764002
Location
Chromosome 12 · GRCh37 108,618,630 · GRCh38 108,224,853
Studied allele
T
Published statistic
beta -0.0299 per T allele (SE 0.0045; the paper states no unit or standardisation), P 3.449e-11, T frequency 0.2577 (Supplementary Table 7, EUR meta-analysis of MVP with GPC phase 2) (Supplementary Table 7, rs3764002 row)
1000 Genomes Project phase 3, people with 0, 1 and 2 copies
All regions 1480 / 761 / 263 · Africa 644 / 15 / 2 · The Americas 242 / 95 / 10 · East Asia 104 / 248 / 152 · Europe 274 / 197 / 32 · South Asia 216 / 206 / 67
See this card in the sample report
Limits

What it cannot tell you

This small association concerns scores on self-reported personality questionnaires. A single marker cannot assess your personality, emotional state, intelligence, capability or mental health. It gives no personality score and says nothing about any mental-health condition. Only the studied C/T allele pair is interpreted.

A genome-wide investigation into the underlying genetic architecture of personality traits and overlap with psychopathology (Gupta et al., 2024)
The same topic

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