C9 p.Arg311=
c.933C>T · rs368212619 · VCV2150566
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0423%, eas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP -3.6 | GERP -4.2 |
| Overall | ||
| CADD | 5.314 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0423%
East Asian · 19/44,866 alleles
Filtering AF
0.0277%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.023%
Overall
0.00509%
82/1,611,710 alleles · ultra-rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| East Asiangrpmax | 0.0423% | 2,361 |
| African / African-American | 0.0134% | 7,483 |
| Admixed American | 0.01% | 9,993 |
| Remaining individualsnot grpmax-eligible | 0.00641% | 15,599 |
| European (non-Finnish) | 0.00348% | 28,735 |
| Finnishnot grpmax-eligible | 0.00156% | 63,938 |
| South Asian | 0.0011% | 91,020 |
Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.
Variant & gene context
- Gene
- C9
- Protein
- p.Arg311=
- Coding
- c.933C>T
- MANE Select
- NM_001737
- dbSNP
- rs368212619
- Type
- single nucleotide variant
- Location
- chr5:39311315 (GRCh38)
- Gene constraint
- LOEUF 1.223 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 79.32 · 9 PDB
- Residue 311
- the macpf domain; a β-strand
Similar variants
- C9 p.Arg311Cys Uncertain significance ★ ⚠ same residue
- C9 p.Arg311His Uncertain significance ★ ⚠ same residue
- C9 c.871-2A>G Likely pathogenic ★★ same type
- C9 p.Arg116Ter Pathogenic/Likely pathogenic ★★ same type
- C9 p.Arg154Ter Pathogenic/Likely pathogenic ★★ same type
- C9 p.Arg194Ter Pathogenic/Likely pathogenic ★★ same type
- C9 p.Arg86Ter Pathogenic/Likely pathogenic ★★ same type
- C9 p.Cys54Ter Pathogenic/Likely pathogenic ★★ same type
Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →
Cite Sugi Variant
Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/c9-p-arg311 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown