CCDC22 p.Arg148Cys
c.442C>T · VCV3264168
Computational evidence
| Protein change | ||
| AlphaMissense | 0.1085 | likely benign |
|---|---|---|
| REVEL | 0.245 | benign-leaning |
| SaProt | LLR -9.25 | tolerated |
| ⇒ AlphaMissense, REVEL and SaProt all call this tolerated. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 4.8 | GERP 0.36, phastCons 1 |
| Regional constraint | o/e 0.99 | unconstrained · MANE · 5,832 bp · p 0.85 · regional, not allelic |
| Overall | ||
| CADD | 24.7 | PHRED · no single calibrated threshold — expert panels disagree |
ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification
AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.
Population frequency
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Finnishnot grpmax-eligible | 0.02% | 4,996 |
| Remaining individualsnot grpmax-eligible | 0.0022% | 45,539 |
| European (non-Finnish)grpmax | 0.00023% | 434,478 |
Finnish shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.
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
- CCDC22
- Protein
- p.Arg148Cys
- Coding
- c.442C>T
- MANE Select
- NM_014008
- Type
- single nucleotide variant
- Location
- chrX:49242966 (GRCh38)
- Structure
- AlphaFold pLDDT 78.95 · 4 PDB
- Residue 148
- the 'sufficicient and required for interaction with ccdc93' region; the 'sufficient for interaction with commd1' region
Similar variants
- CCDC22 p.Ala463Gly Uncertain significance ★★ ⚠ same type
- CCDC22 p.Arg107Cys Uncertain significance ★★ ⚠ same type
- CCDC22 p.Arg128Gln Uncertain significance ★★ ⚠ same type
- CCDC22 p.Arg135Gln Uncertain significance ★★ ⚠ same type
- CCDC22 p.Arg245Gln Uncertain significance ★★ ⚠ same type
- CCDC22 p.Arg257His Uncertain significance ★★ ⚠ same type
- CCDC22 p.Arg379Cys Uncertain significance ★★ ⚠ same type
- CCDC22 p.Arg496Cys 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/ccdc22-p-arg148cys (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown