EPM2A p.Ala47=
c.141G>A · rs1363081086 · VCV1508143
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00165%, afr)
Conditions
1
progressive myoclonus epilepsy
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 0.2 | GERP -0.47, phastCons 0.2 |
| Overall | ||
| CADD | 9.062 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00165%
African / African-American · 1/60,500 alleles
Overall
0.000168%
2/1,188,228 alleles · very rare
exomes 2/1,041,214 · genomes 0/147,014 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.00165% | 60,500 |
| European (non-Finnish) | 0.000105% | 955,174 |
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
- EPM2A
- Protein
- p.Ala47=
- Coding
- c.141G>A
- MANE Select
- NM_005670
- dbSNP
- rs1363081086
- Type
- single nucleotide variant
- Location
- chr6:145735358 (GRCh38)
- Gene constraint
- LOEUF 1.191 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 34.25 · 2 PDB
- Residue 47
- the cbm20 domain
Similar variants
- EPM2A c.301+1G>T Pathogenic ★★ same condition
- EPM2A c.302-1G>C Pathogenic/Likely pathogenic ★★ same condition
- EPM2A c.302-2A>G Pathogenic ★★ same condition
- EPM2A p.Arg108Cys Pathogenic/Likely pathogenic ★★ same condition
- EPM2A p.Arg171His Pathogenic/Likely pathogenic ★★ same condition
- EPM2A p.Arg241Ter Pathogenic/Likely pathogenic ★★ same condition
- EPM2A p.Gly279Cys Pathogenic/Likely pathogenic ★★ same condition
- EPM2A p.Gly279Ser Pathogenic/Likely pathogenic ★★ same condition
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/epm2a-p-ala47 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown