CAPN1 p.Ala241=
c.723G>A · rs201509961 · VCV736379
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0267%, 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 -7.8 | GERP -4.8 |
| Overall | ||
| CADD | 3.666 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0267%
Admixed American · 16/59,886 alleles
Filtering AF
0.0168%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0136%
Overall
0.00229%
37/1,613,046 alleles · ultra-rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.0267% | 3,743 |
| Finnishnot grpmax-eligible | 0.00469% | 21,315 |
| Remaining individualsnot grpmax-eligible | 0.0032% | 31,218 |
| African / African-American | 0.00267% | 37,440 |
| European (non-Finnish) | 0.00119% | 84,252 |
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
- CAPN1
- Protein
- p.Ala241=
- Coding
- c.723G>A
- MANE Select
- NM_005186
- dbSNP
- rs201509961
- Type
- single nucleotide variant
- Location
- chr11:65186302 (GRCh38)
- Gene constraint
- LOEUF 0.977 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 90.03 · 5 PDB
- Residue 241
- the calpain catalytic domain; an α-helix
Similar variants
- CAPN1 p.Ala241Val Uncertain significance ★ ⚠ same residue
- CAPN1 c.1605+5G>A Pathogenic/Likely pathogenic ★★ same type
- CAPN1 c.267+2T>C Pathogenic/Likely pathogenic ★★ same type
- CAPN1 c.338-1G>A Pathogenic ★★ same type
- CAPN1 c.759+1G>A Pathogenic ★★ same type
- CAPN1 c.843+1G>C Pathogenic/Likely pathogenic ★★ same type
- CAPN1 c.929+2T>A Likely pathogenic ★★ same type
- CAPN1 p.Arg285Ter 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/capn1-p-ala241 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown