CFB · rs4151669
Stands on its own. Nothing else here links to this position yet — but the page above is the point: what the research found, what each genotype means, and where it came from, in language you can read. Links to conditions, drugs and the senses appear automatically if we write them.
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 A allele shifted the measure 1.17 lower (95% confidence interval 0.97-1.37); p = 6 × 10−28.
Where it sits Chromosome 6, band 6p21.33 — a synonymous change in CFB.
What ClinVar records
Classification
Benign/Likely benign for Atypical hemolytic-uremic syndrome with B factor anomaly, Atypical hemolytic-uremic syndrome, CFB-related disorder; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 12 submitters), last evaluated 2026-09-17.
ClinVar record 356273 NM_001710.6(CFB):c.504G>A (p.Pro168=)
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.
rs4151669 is a single position in the genome, in or near the CFB 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.
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.
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.
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 (rs4151669). MyGeneLog™. https://www.mygenelog.com/variants/rs4151669