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Complement factor B levels

SKIC2 · rs438999

What the study found

Who was studied 2,935 Qatari ancestry individuals.

The effect Each copy of the G allele shifted the measure 0.721 higher (95% confidence interval 0.61-0.84); p = 5 × 10−35.

How common The G allele had a frequency of about 6% in the people studied.

Where it sits Chromosome 6, band 6p21.33 — a missense change in SKIC2.

What ClinVar records

Classification Benign/Likely benign for Trichohepatoenteric syndrome 2; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 5 submitters), last evaluated 2026-02-04. ClinVar record 356316 NM_006929.5(SKIC2):c.452A>G (p.Gln151Arg)

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 factor B levels. This is the starting point the study compared everyone against.
A/G One copy of the version the research linked to Complement factor B levels. That is a smaller link than two copies.
G/G Two copies of the version the research linked to Complement factor B levels. That is the strongest link of the three results. A link in a study is not a diagnosis.
Source

Questions about rs438999

What is rs438999?

rs438999 is a single position in the genome, in or near the SKIC2 gene. Published research associates it with complement factor b levels. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.

Does having rs438999 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 rs438999 come from?

GWAS Catalog, Human molecular genetics 2023, PMID:36168886. 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 factor B levels (rs438999). MyGeneLog™. https://www.mygenelog.com/variants/rs438999

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