rs2073963

A SNP in the HDAC9 gene on chromosome 7. Its most notable genotype is G;G: increased risk of baldness

Gene
HDAC9
Location
Chr 718,838,251 (GRCh38)
Highest magnitude
2.5Worth knowing
Tested on
23andMe, AncestryDNA, FamilyTreeDNA
Minor allele frequency
44%

Genotypes

As shown in 23andMe and AncestryDNA files.

  1. G;GMost notableBadincreased risk of baldnessWorth knowing · 2.525% of people
  2. G;TBadincreased risk of baldnessWorth knowing · 2.048% of people
  3. T;TGoodreduced risk of baldnessWorth knowing · 2.028% of people

On SNPedia: (G;G), (G;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 11 HapMap populations.

  • AverageG;G 25% G;T 48% T;T 28%
  • European ancestry (Utah)G;G 15% G;T 48% T;T 37%
  • Han Chinese (Beijing)G;G 24% G;T 43% T;T 33%
  • Japanese (Tokyo)G;G 19% G;T 50% T;T 31%
  • Yoruba (Nigeria)G;G 30% G;T 53% T;T 18%
  • African ancestry (Southwest US)G;G 21% G;T 49% T;T 30%
  • Chinese (Denver)G;G 28% G;T 55% T;T 17%
  • Gujarati IndianG;G 37% G;T 42% T;T 22%
  • Luhya (Kenya)G;G 29% G;T 49% T;T 22%
  • Mexican ancestry (Los Angeles)G;G 26% G;T 43% T;T 31%
  • Maasai (Kenya)G;G 27% G;T 44% T;T 29%
  • TuscanG;G 16% G;T 51% T;T 33%

Conditions, medicines and genes

Other HDAC9 SNPs

All HDAC9 SNPs

Notes

From SNPedia

Notes

Baldness paper from 23andMe June 2012

Source and license

Adapted from rs2073963 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.