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Standard

Hemoglobin A1c levels

TCF4 · rs72926972

Strength of the evidence

1 / 4

Its strongest genetic-study result is p = 10−8, with 2 associations in the GWAS Catalog.

How this is scored

4: ClinVar disease-causing, reviewed by an expert panel or a guideline (3–4 stars). 3: ClinVar, several labs agreeing (2 stars), or a genetic study at p ≤ 10−50. 2: ClinVar from one lab (1 star), or p ≤ 10−20. 1: ClinVar submitted without criteria (0 stars), or genome-wide significance (p ≤ 5×10−8). The higher of the two counts. It says how solid the evidence is, not whether it matters for a particular person.

What the study found

Who was studied 344,182 European ancestry individuals, 71,221 East Asian ancestry individuals.

The effect Each copy of the A allele shifted the measure 0.0248 higher (95% confidence interval 0.017-0.033); p = 5 × 10−9.

Where it sits Chromosome 18, band 18q21.2 — in an intron of TCF4.

How common each version is

AC
Korean KRGDB
A 0.0% · C 100.0%
Korean Korea1K
C 100.0%
Vietnamese
A 0.5% · C 99.5%
World gnomAD
A 5.1% · C 94.9%
World 1000 Genomes
A 2.4% · C 97.6%
World TOPMed
A 4.7% · C 95.3%

The share of all copies of this position that are each version. Source: the population studies published in dbSNP (US NCBI); each row names its study.

What each result means

A/A Two copies of the version the research linked to Hemoglobin A1c levels. That is the strongest link of the three results. A link in a study is not a diagnosis.
A/C One copy of the version the research linked to Hemoglobin A1c levels. That is a smaller link than two copies.
C/C No copy of the version the research linked to Hemoglobin A1c levels. This is the starting point the study compared everyone against.
Source

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Hemoglobin A1c levels (rs72926972). MyGeneLog™. https://www.mygenelog.com/variants/rs72926972

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