CNTNAP1 p.Asp441=
c.1323C>T · rs745632089 · VCV2180839
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0164%, mid)
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 -0.075 | GERP -5, phastCons 0.86 |
| Overall | ||
| CADD | 6.804 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0164%
Middle Eastern · 1/6,084 alleles
Filtering AF
0.00791%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00744%
Overall
0.00836%
135/1,614,082 alleles · ultra-rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Middle Easterngrpmax | 0.0164% | 6,084 |
| Ashkenazi Jewishnot grpmax-eligible | 0.0135% | 7,401 |
| Remaining individualsnot grpmax-eligible | 0.0096% | 10,415 |
| European (non-Finnish) | 0.00941% | 10,631 |
| African / African-American | 0.00667% | 14,983 |
| South Asian | 0.00659% | 15,182 |
| Admixed American | 0.00333% | 30,002 |
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
- CNTNAP1
- Protein
- p.Asp441=
- Coding
- c.1323C>T
- MANE Select
- NM_003632
- dbSNP
- rs745632089
- Type
- single nucleotide variant
- Location
- chr17:42688478 (GRCh38)
- Gene constraint
- LOEUF 0.578 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 81.51
- Residue 441
- the laminin g-like 2 domain
Similar variants
- CNTNAP1 p.Arg1121Ter Pathogenic ★★ same type
- CNTNAP1 p.Arg618Ter Pathogenic/Likely pathogenic ★★ same type
- CNTNAP1 p.Arg697Ter Pathogenic/Likely pathogenic ★★ same type
- CNTNAP1 p.Arg835Ter Pathogenic ★★ same type
- CNTNAP1 p.Arg890Ter Pathogenic ★★ same type
- CNTNAP1 p.Trp672Ter Pathogenic ★★ same type
- CNTNAP1 c.3568+10G>A Uncertain significance ★★ same type
- CNTNAP1 p.Ala1322Thr 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/cntnap1-p-asp441 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown