CCDC33 p.Arg466Cys
c.1396C>T · VCV4649501
Uncertain significance
Single submitter
Classification
Uncertain significance
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00893%, eas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| REVEL | 0.03 | moderately benign-leaning |
|---|---|---|
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 0.69 | GERP -1.8 |
| Regional constraint | o/e 1.00 | unconstrained · MANE · 99 kb · p 0.88 · regional, not allelic |
| Overall | ||
| CADD | 14.52 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00893%
East Asian · 4/44,814 alleles
Filtering AF
0.00298%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0018%
Overall
0.000993%
16/1,611,566 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| East Asiangrpmax | 0.00893% | 11,204 |
| Remaining individualsnot grpmax-eligible | 0.00321% | 31,158 |
| Admixed American | 0.00167% | 59,860 |
| European (non-Finnish) | 0.000763% | 131,063 |
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
- CCDC33
- Protein
- p.Arg466Cys
- Coding
- c.1396C>T
- MANE Select
- NM_025055
- Type
- single nucleotide variant
- Location
- chr15:74330294 (GRCh38)
- Gene constraint
- LOEUF 1.17 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 72.34
Similar variants
- CCDC33 p.Arg466Leu Uncertain significance ★ same residue
- CCDC33 p.Pro610Leu Likely benign ★★ same type
- STRA6 c.96+1744C>G Benign ★★ same type
- STRA6 c.-15-751T>G Benign ★★ same type
- STRA6 c.-16+1061C>G Likely benign ★★ same type
- STRA6 c.-16+1161G>A Benign ★★ same type
- STRA6 c.-16+794G>C Benign ★★ same type
- STRA6 c.-5200G>A Benign ★★ 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/ccdc33-p-arg466cys (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown