C8A p.Asn495=
c.1485T>C · rs772350687 · VCV1610560
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.025%, amr)
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 -20 | GERP -4.6 |
| Overall | ||
| CADD | 0.008 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.025%
Admixed American · 15/60,012 alleles
Filtering AF
0.0154%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0124%
Overall
0.00266%
43/1,614,104 alleles · ultra-rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.025% | 4,001 |
| Ashkenazi Jewishnot grpmax-eligible | 0.0203% | 4,935 |
| Remaining individualsnot grpmax-eligible | 0.0096% | 10,415 |
| East Asian | 0.00891% | 11,222 |
| South Asian | 0.0011% | 91,090 |
| European (non-Finnish) | 0.000932% | 107,277 |
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
- C8A
- Protein
- p.Asn495=
- Coding
- c.1485T>C
- MANE Select
- NM_000562
- dbSNP
- rs772350687
- Type
- single nucleotide variant
- Location
- chr1:56912507 (GRCh38)
- Gene constraint
- LOEUF 1.168 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 79.58 · 11 PDB
- Residue 495
- a UniProt-annotated variant site (in c8d1); the macpf domain
Similar variants
- C8A p.Asn495Ser Uncertain significance ★ ⚠ same residue
- C8A p.Arg424Ter Pathogenic ★★ same type
- C8A p.Arg498Ter Pathogenic/Likely pathogenic ★★ same type
- C8A p.Glu466Ter Pathogenic ★★ same type
- C8A p.Tyr210Ter Pathogenic/Likely pathogenic ★★ same type
- C8A p.Tyr384Ter Pathogenic/Likely pathogenic ★★ same type
- C8A p.Arg107Cys Uncertain significance ★★ ⚠ same type
- C8A p.Arg196His Uncertain significance ★★ ⚠ 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/c8a-p-asn495 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown