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DNA Traits · Body & performance

Lean body mass association

The weight of everything in the body that is not fat, such as muscle and bone.

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Evidence · Replicated

What the research found

In the cited research, the A allele at rs2287926 was associated with higher whole-body lean mass after adjustment for fat mass and height in the studied cohorts.

GG
Lower average
AG
Middle
AA
Higher average
Slight effect

What the study found

In the study, each copy went with whole-body lean mass after adjustment for height and fat mass about 0.19 kg higher on average.

European-ancestry adults (20 discovery cohorts and 27 European replication cohorts; lean mass by DXA or bioimpedance) · Table 1 (Combined EU columns)
Evidence
Genome-wide association with independent replication
Who was studied
European-ancestry discovery and replication cohorts
1000 Genomes Project

How common each genotype is

How common each genotype is in the 1000 Genomes Project, by region
RegionGGLower averageAGMiddleAAHigher average
All regions2,504 people63%32%5%
Africa661 people45%44%11%
The Americas347 people76%21%4%
East Asia504 people67%30%3%
Europe503 people78%21%1%
South Asia489 people58%36%6%

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 BC8%5 of 65 copies read
First farmers6500 to 3000 BC13%130 of 968 copies read
Bronze Age3000 to 1200 BC14%126 of 931 copies read
Iron Age and Antiquity1200 BC to AD 60013%152 of 1,134 copies read
Middle AgesAD 600 to 150015%86 of 592 copies read
Today1000 Genomes12%118 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.
rs2287926

The marker

Gene or region
VCAN
Marker
rs2287926
Location
Chromosome 5 · GRCh37 82,815,408 · GRCh38 83,519,589
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
VCAN · rs2287926
Location
Chromosome 5 · GRCh37 82,815,408 · GRCh38 83,519,589
Studied allele
A
Published statistic
beta 0.19 per A allele (SE 0.03), P 7.5e-9, N 85,519 (combined EU); discovery 0.24 (SE 0.05), P 8.6e-7, N 38,292; replication 0.15 (SE 0.04), P 8.5e-4, N 47,227; Table 1 (Table 1 (Combined EU columns))
1000 Genomes Project phase 3, people with 0, 1 and 2 copies
All regions 1571 / 800 / 133 · Africa 299 / 291 / 71 · The Americas 262 / 72 / 13 · East Asia 337 / 153 / 14 · Europe 391 / 106 / 6 · South Asia 282 / 178 / 29
See this card in the sample report
Limits

What it cannot tell you

Lean mass includes non-fat soft tissues, including organs, as well as muscle. The study adjusted for height, fat mass, age and sex. This marker cannot tell you your current muscle mass, bodybuilding potential or response to training, and it is not a test for low muscle mass.

Large meta-analysis of genome-wide association studies identifies five loci for lean body mass (Zillikens et al., 2017)
The same topic

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