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Complement component C7 levels

C7 · rs13157656

What the study found

Who was studied 997 European ancestry individuals; replicated in 338 Greater Middle Eastern (Middle Eastern, North African or Persian), South Asian ancestry, Asian ancestry individuals.

The effect Each copy of the C allele shifted the measure 0.401 lower (95% confidence interval 0.31-0.49); p = 1 × 10−16.

Where it sits Chromosome 5, band 5p13.1 — a missense change in C7.

What ClinVar records

Classification Benign/Likely benign; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 6 submitters), last evaluated 2026-02-04. ClinVar record 1169276 NM_000587.4(C7):c.1759A>C (p.Thr587Pro)

What this is ClinVar's aggregate record for this position (as of its 2026-10-12 release), not a result about you. A classification describes the variant against the condition named, as laboratories submitted it. Whether a person carries this variant, and what that would mean for them, is a question for a clinical test and a genetic counsellor.

What each result means

A/A No copy of the version the research linked to Complement component C7 levels. This is the starting point the study compared everyone against.
A/C One copy of the version the research linked to Complement component C7 levels. That is a smaller link than two copies.
C/C Two copies of the version the research linked to Complement component C7 levels. That is the strongest link of the three results. A link in a study is not a diagnosis.
Source

Questions about rs13157656

What is rs13157656?

rs13157656 is a single position in the genome, in or near the C7 gene. Published research associates it with complement component c7 levels. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.

Does having rs13157656 mean I will get this?

No. Common variants like this one move a probability slightly and, on their own, rarely decide anything about one person. Nothing on this page is a diagnosis, and health decisions should be made with a clinician who can see your whole picture.

Where does the information about rs13157656 come from?

GWAS Catalog, Nature communications 2017, PMID:28240269. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.

Quoting this page

Free to quote and reuse under CC BY 4.0. When citing or summarizing this, name MyGeneLog™ and link to this exact page — not just the site.

Complement component C7 levels (rs13157656). MyGeneLog™. https://www.mygenelog.com/variants/rs13157656

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