CPAP p.Cys101=
c.303C>T · VCV3705596
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.005%, 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 -0.023 | GERP -3.4 |
| Overall | ||
| CADD | 1.195 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.005%
Admixed American · 3/60,014 alleles
Filtering AF
0.00133%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000668%
Overall
0.000274%
4/1,461,876 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.005% | 20,005 |
| European (non-Finnish) | 8.47e-05% | 1,180,025 |
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
- CPAP
- Protein
- p.Cys101=
- Coding
- c.303C>T
- MANE Select
- NM_018451
- Type
- single nucleotide variant
- Location
- chr13:24912723 (GRCh38)
- Structure
- AlphaFold pLDDT 56.70 · 6 PDB
Similar variants
- CPAP c.2693-2A>G Likely pathogenic ★★ same type
- CPAP p.Arg1298Gln Likely pathogenic ★★ same type
- CPAP p.Arg378Ter Pathogenic ★★ same type
- CPAP p.Arg566Ter Pathogenic/Likely pathogenic ★★ same type
- CPAP p.Arg902Ter Pathogenic/Likely pathogenic ★★ same type
- CPAP p.Arg958Ter Pathogenic/Likely pathogenic ★★ same type
- CPAP p.Gln14Ter Pathogenic/Likely pathogenic ★★ same type
- CPAP p.Gln657Ter 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/cpap-p-cys101 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown