rs4430796

A SNP in the HNF1B gene on chromosome 17. Its most notable genotype is A;A: 1.38x increased risk for prostate cancer

Gene
HNF1B
Location
Chr 1737,738,049 (GRCh38)
Highest magnitude
2.1Worth knowing
Tested on
23andMe, AncestryDNA
Minor allele frequency
47%

Genotypes

As shown in 23andMe and AncestryDNA files.

  1. A;AMost notableBad1.38x increased risk for prostate cancerWorth knowing · 2.128% of people
  2. A;GNot ratednormal riskTypical · 0.048% of people
  3. G;GNot ratednormal riskTypical · 0.025% of people

On SNPedia: (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.

  • AverageA;A 28% A;G 48% G;G 25%
  • European ancestry (Utah)A;A 20% A;G 59% G;G 21%
  • Han Chinese (Beijing)A;A 58% A;G 35% G;G 7%
  • Japanese (Tokyo)A;A 42% A;G 47% G;G 11%
  • Yoruba (Nigeria)A;A 9% A;G 50% G;G 41%
  • African ancestry (Southwest US)A;A 12% A;G 56% G;G 32%
  • Chinese (Denver)A;A 52% A;G 40% G;G 7%
  • Gujarati IndianA;A 44% A;G 51% G;G 6%
  • Luhya (Kenya)A;A 7% A;G 38% G;G 56%
  • Mexican ancestry (Los Angeles)A;A 33% A;G 60% G;G 7%
  • Maasai (Kenya)A;A 6% A;G 39% G;G 56%
  • TuscanA;A 21% A;G 51% G;G 28%

Notes

From SNPedia

Show notes, about 220 words

rs4430796 is a SNP in the TCF2 gene on chromosome 17q12, associated with increased risk for prostate cancer in several studies. In a study of over 3,600 Caucasians with prostate cancer, rs4430796 is one of five SNPs used (with family history as a sixth factor) to cumulatively predict overall risk. On its own, the rs4430796(A;A) risk genotype - in dbSNP orientation, not as published - yields an odds ratio for developing prostate cancer of 1.38 (CI: 1.21-1.57, p=1.6x10e-6) and may account for 10.2% of population attributable risk. article linking to Prostate cancer and type-2 diabetes 403 non-Hispanic white families were studied, totaling 1,015 men, to reach the conclusion that the rs4430796(A) allele is associated with increased prostate cancer risk; the odds ratio was 1.40 (CI: 1.09-1.81) under an additive genetic model. Notably, rs4430796(A) was significantly associated with prostate cancer among men diagnosed at an early (<50 years) but not later age (P = 0.006 versus P = 0.118). The increased risk associated with rs4430796 and the closely linked rs7501939 is approximately doubled in individuals hereditarily predisposed to develop early-onset prostate cancer. rs4430796 identified as one of three HNF1B gene SNPs associated with decreased risk for prostate cancer in two large prospective studies Prostate-Specific Antigen

Source and license

Adapted from rs4430796 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.