CFI
Immune System · Complement Activation & Opsonization
How does CFI help prevent complement from staying active too long?
CFI makes factor I, a protein that helps limit complement activity by processing complement components. This control supports immune defense while reducing damage to healthy tissue.
- Common Gene Name
- complement factor I
- NCBI Gene ID
- 3426
- Chromosome
- 4
Clinical Evidence Status
Established disease relationship
These labels describe available evidence about a gene. They do not classify your variant or recommend a treatment.
Answer Sources
Explore supporting evidence (5 records)
| Condition or drug | Evidence | Grade / status | Context | Source |
|---|---|---|---|---|
| atypical hemolytic-uremic syndrome | ClinGen gene-disease validity | Definitive | Autosomal dominant | View source 2023-06-01 |
| C3 glomerulonephritis | ClinGen gene-disease validity | Moderate | Autosomal dominant | View source 2024-06-28 |
| Complement factor I deficiency | MedlinePlus related condition | Association type varies; no grade assigned here | View source 2010-09 | |
| C3 glomerulopathy | MedlinePlus related condition | Association type varies; no grade assigned here | View source 2010-09 | |
| Age-related macular degeneration | MedlinePlus related condition | Association type varies; no grade assigned here | View source 2010-09 |
Source snapshot: 2026-09-09. Consumer text updated: 2026-09-10. Source dates describe the cited records, not a new clinical review.
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