AGRN p.Arg1287Trp
c.3859C>T · rs776411371 · VCV474127
Uncertain significance
Multiple submitters
Classification
Uncertain significance
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.00887%, amr)
Conditions
2
Inborn genetic diseases
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| REVEL | 0.076 | moderately benign-leaning |
|---|---|---|
| Splicing | ||
| SpliceAI | <0.2 | all four deltas below 0.2 · C>A here scores Δ0.23 · evaluated, not missing |
| Constraint at this position | ||
| Conservation | phyloP -0.052 | GERP -2.9 |
| Regional constraint | o/e 1.02 | unconstrained · MANE · 8,500 bp · p 0.41 · regional, not allelic |
| Overall | ||
| CADD | 19.2 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00887%
Admixed American · 5/56,346 alleles
Filtering AF
0.00343%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00218%
Overall
0.00127%
20/1,568,710 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.00887% | 11,269 |
| East Asian | 0.00472% | 21,197 |
| African / African-American | 0.00406% | 24,655 |
| Remaining individualsnot grpmax-eligible | 0.00327% | 30,550 |
| South Asian | 0.00116% | 86,416 |
| European (non-Finnish) | 0.000601% | 166,406 |
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
- AGRN
- Protein
- p.Arg1287Trp
- Coding
- c.3859C>T
- MANE Select
- NM_198576
- dbSNP
- rs776411371
- Type
- single nucleotide variant
- Location
- chr1:1048119 (GRCh38)
- Gene constraint
- LOEUF 0.73 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 69.79 · 1 PDB
- Residue 1287
- the 'disordered' region
Similar variants
- AGRN p.Arg1287Gln Uncertain significance ★★ same residue
- AGRN p.Arg1287= Likely benign ★★ same residue
- AGRN c.3632-1G>C Likely pathogenic ★★ same condition
- AGRN p.Arg1671Ter Pathogenic/Likely pathogenic ★★ same condition
- AGRN p.Arg834Ter Pathogenic/Likely pathogenic ★★ same condition
- AGRN p.Gly1582Arg Pathogenic ★★ same condition
- AGRN p.Gly1675Ser Pathogenic/Likely pathogenic ★★ same condition
- AGRN c.1177+4A>G Uncertain significance ★★ 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/agrn-p-arg1287trp (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown