DNA Traits · Sleep & rhythms
Daytime napping (STK32A)
How often people nap during the day.
What the research found
In the cited research, the A allele at rs10875622 was associated with more frequent self-reported daytime napping in the studied cohorts.
- GG
- Less often
- AG
- Middle
- AA
- More often
What the study found
In the study, each copy went with how often people nap, on a three-step scale from never or rarely to usually about 0.01 points higher on average.
- Evidence
- Genome-wide association in UK Biobank with independent replication in 23andMe
- Who was studied
- UK Biobank and 23andMe research participants of European ancestry
How common each genotype is
| Region | GGLess often | AGMiddle | AAMore often |
|---|---|---|---|
| All regions2,504 people | 20% | 48% | 32% |
| Africa661 people | 20% | 47% | 33% |
| The Americas347 people | 22% | 51% | 27% |
| East Asia504 people | 13% | 48% | 39% |
| Europe503 people | 17% | 47% | 37% |
| South Asia489 people | 28% | 47% | 25% |
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.
The marker
- Gene or region
- STK32A
- Marker
- rs10875622
- Location
- Chromosome 5 · GRCh37 146,693,062 · GRCh38 147,313,499
- Letters studied
- A and G, with A 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
- STK32A · rs10875622
- Location
- Chromosome 5 · GRCh37 146,693,062 · GRCh38 147,313,499
- Studied allele
- A
- Published statistic
- Meta-analysis beta 0.0090 per A (SE 0.0009), P 6.24e-26; 23andMe replication 0.0075 (SE 0.0012), P 1.0e-9, n 541,333; UK Biobank 0.0105 (SE 0.0012), P 1.3e-17, n 452,633; A frequency 0.58 (Supplementary Data 1 and 2) (Supplementary Data 2)
- 1000 Genomes Project phase 3, people with 0, 1 and 2 copies
- All regions 496 / 1195 / 813 · Africa 134 / 311 / 216 · The Americas 77 / 176 / 94 · East Asia 65 / 243 / 196 · Europe 83 / 236 / 184 · South Asia 137 / 229 / 123
What it cannot tell you
Napping was self-reported on a three-step scale, and in UK Biobank the association was about twice as strong in men as in women.
Genetic determinants of daytime napping and effects on cardiometabolic health (Dashti et al., 2021)More in Sleep & rhythms
- Morning preference association
- Snoring tendency association
- Sleep efficiency association
- Overnight sleep episodes association
- Sleep midpoint timing association
- Daytime napping association
- Daytime sleepiness association
- Difficulty sleeping association
- Morning preference (RGS16)
- Morning preference (AK5)
- Snoring (POC5)
- Snoring (TRAM1)
- Daytime napping (TLE4)
See your own two letters.
Upload the raw DNA file you already have. Your report reads this marker and every other card studied for you, each with its evidence and its limits.