CFAP99 p.Ala255Thr
c.763G>A · rs186007731 · VCV2350204
Uncertain significance
Single submitter
Classification
Uncertain significance
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
rare (popmax 0.178%, afr)
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 8.4 | GERP 0.78, phastCons 1 |
| Regional constraint | o/e 1.08 | unconstrained · MANE · 36 kb · p 0.016 · regional, not allelic |
| Overall | ||
| CADD | 22.7 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.178%
African / African-American · 130/73,152 alleles
Filtering AF
0.153%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.143%
Overall
0.013%
199/1,536,162 alleles · rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.178% | 563 |
| Remaining individualsnot grpmax-eligible | 0.0683% | 1,464 |
| Admixed American | 0.0255% | 3,924 |
| Middle Eastern | 0.0167% | 5,990 |
| South Asian | 0.00357% | 28,021 |
| European (non-Finnish) | 0.000959% | 104,266 |
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
- CFAP99
- Protein
- p.Ala255Thr
- Coding
- c.763G>A
- MANE Select
- NM_001193282
- dbSNP
- rs186007731
- Type
- single nucleotide variant
- Location
- chr4:2449973 (GRCh38)
- Gene constraint
- LOEUF 1.203 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 77.28
Similar variants
- CFAP99 p.Ala307Thr Uncertain significance ★ same type
- CFAP99 p.Ala366Thr Uncertain significance ★ same type
- CFAP99 p.Ala369Gly Uncertain significance ★ same type
- CFAP99 p.Ala396Val Uncertain significance ★ same type
- CFAP99 p.Ala423Thr Uncertain significance ★ same type
- CFAP99 p.Ala428Thr Uncertain significance ★ same type
- CFAP99 p.Ala450Ser Uncertain significance ★ same type
- CFAP99 p.Ala450Val 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/cfap99-p-ala255thr (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown