AARS1 p.Pro421=
c.1263A>G · rs756280590 · VCV1682237
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00167%, amr)
Conditions
1
Charcot-Marie-Tooth disease type 2
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 -6.6 | GERP -3.4 |
| Overall | ||
| CADD | 4.885 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00167%
Admixed American · 1/59,990 alleles
Overall
6.84e-05%
1/1,461,710 alleles · very rare
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
- AARS1
- Protein
- p.Pro421=
- Coding
- c.1263A>G
- MANE Select
- NM_001605
- dbSNP
- rs756280590
- Type
- single nucleotide variant
- Location
- chr16:70265622 (GRCh38)
- Gene constraint
- LOEUF 0.772 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
- Structure
- AlphaFold pLDDT 90.66 · 10 PDB
Similar variants
- AARS1 p.Pro421Ala Uncertain significance ★★ ⚠ same residue
- AARS1 p.Pro421Leu Uncertain significance ★ ⚠ same residue
- AARS1 c.2177+1G>A Pathogenic/Likely pathogenic ★★ same condition
- AARS1 p.Arg13Ter Pathogenic ★★ same condition
- AARS1 p.Arg246Ter Pathogenic/Likely pathogenic ★★ same condition
- AARS1 p.Arg329Cys Likely pathogenic ★★ same condition
- AARS1 p.Arg329His Pathogenic/Likely pathogenic ★★ same condition
- AARS1 p.Arg330Ter 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/aars1-p-pro421 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown