rs2237892

A SNP in the KCNQ1 gene on chromosome 11. Its most notable genotype is C;C: common in complete genomics

Gene
KCNQ1
Location
Chr 112,818,521 (GRCh38)
Highest magnitude
0.0Typical
Tested on
23andMe, AncestryDNA
Minor allele frequency
17%

Genotypes

As shown in 23andMe and AncestryDNA files.

  1. C;CMost notableGoodcommon in complete genomicsTypical · 0.071% of people

On SNPedia: (C;C). 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.

  • AverageC;C 71%
  • European ancestry (Utah)C;C 85%
  • Han Chinese (Beijing)C;C 44%
  • Japanese (Tokyo)C;C 37%
  • Yoruba (Nigeria)C;C 80%
  • African ancestry (Southwest US)C;C 84%
  • Chinese (Denver)C;C 41%
  • Gujarati IndianC;C 98%
  • Luhya (Kenya)C;C 79%
  • Mexican ancestry (Los Angeles)C;C 64%
  • Maasai (Kenya)C;C 73%
  • TuscanC;C 90%

Conditions, medicines and genes

Notes

From SNPedia

Show notes, about 560 words

23andMe blog rs2237892(C) is associated with an increased risk for developing type-2 diabetes. each C at rs2237892 increased the odds of type 2 diabetes by 1.4 times, compared to the TT genotype. It’s important to note, however, that the C version is actually pretty common. In Asian populations, the C version of rs2237892 increased a person’s odds of type 2 diabetes by 1.42 times compared to people with TT. But because about 50% of the Asian population is actually CT at this SNP, it could be viewed that CC has 1.3 times the odds compared to typical, while TT has 0.61 times the typical odds. In European populations, about 85% of people are CC. This means that the results of Yasuda et al really show that compared to most Europeans, people with CT at rs2237892 have 0.78 times the typical odds of developing type 2 diabetes, and the odds for people with TT are 0.52 times typical. Association between polymorphisms in SLC30A8, HHEX, CDKN2A/B, IGF2BP2, FTO, WFS1, CDKAL1, KCNQ1 and type 2 diabetes in the Korean population. Replication study of candidate genes associated with type 2 diabetes based on genome-wide screening. Genetic variation in KCNQ1 associates with fasting glucose and beta-cell function: a study of 3,734 subjects comprising three ethnicities living in Singapore. Genome-wide association studies in type 2 diabetes. Genetic architecture of type 2 diabetes: recent progress and clinical implications. Is the thrifty genotype hypothesis supported by evidence based on confirmed type 2 diabetes- and obesity-susceptibility variants? Common variants in KCNQ1 are associated with type 2 diabetes and impaired fasting glucose in a Chinese Han population. Association of common type 2 diabetes risk gene variants and posttransplantation diabetes mellitus in renal allograft recipients in Korea. Genome-wide association studies for atherosclerotic vascular disease and its risk factors. PPARG, KCNJ11, CDKAL1, CDKN2A-CDKN2B, IDE-KIF11-HHEX, IGF2BP2 and SLC30A8 are associated with type 2 diabetes in a Chinese population. Prioritizing genes for follow-up from genome wide association studies using information on gene expression in tissues relevant for type 2 diabetes mellitus. Implication of genetic variants near SLC30A8, HHEX, CDKAL1, CDKN2A/B, IGF2BP2, FTO, TCF2, KCNQ1, and WFS1 in type 2 diabetes in a Chinese population. Polymorphisms in KCNQ1 are associated with gestational diabetes in a Korean population. KCNQ1 gene polymorphisms are associated with lipid parameters in a Chinese Han population. Variants in KCNQ1 increase type II diabetes susceptibility in South Asians: a study of 3,310 subjects from India and the US. Genetic risk profiling for prediction of type 2 diabetes. Effects of KCNQ1 polymorphisms on the therapeutic efficacy of oral antidiabetic drugs in Chinese patients with type 2 diabetes. Association between type 2 diabetes genetic susceptibility loci and visceral and subcutaneous fat area as determined by computed tomography. Impact of common type 2 diabetes risk gene variants on future type 2 diabetes in the non-diabetic population in Korea. KCNQ1 gene polymorphisms are associated with the therapeutic efficacy of repaglinide in Chinese Type 2 diabetic patients. Diabetes-associated common genetic variation and its association with GLP-1 concentrations and response to exogenous GLP-1.

Source and license

Adapted from rs2237892 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.