AGAP1 p.Ser257=
c.771C>T · rs538546799 · VCV2906885
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.024%, afr)
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 -14 | GERP -4.4 |
| Overall | ||
| CADD | 0.386 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.024%
African / African-American · 18/74,918 alleles
Filtering AF
0.0155%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0128%
Overall
0.0018%
29/1,614,062 alleles · ultra-rare
exomes 20/1,461,892 · genomes 9/152,170 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.024% | 4,162 |
| Remaining individualsnot grpmax-eligible | 0.0048% | 20,829 |
| Admixed American | 0.00167% | 59,992 |
| European (non-Finnish) | 0.000593% | 168,577 |
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
- AGAP1
- Protein
- p.Ser257=
- Coding
- c.771C>T
- MANE Select
- NM_001037131
- dbSNP
- rs538546799
- Type
- single nucleotide variant
- Location
- chr2:235797856 (GRCh38)
- Gene constraint
- LOEUF 0.366 · pLI 1.00 (gnomAD)
- Structure
- AlphaFold pLDDT 72.01 · 2 PDB
- Residue 257
- the 'small gtpase-like' region
Similar variants
- AGAP1 p.Ala418Ser Uncertain significance ★★ ⚠ same type
- AGAP1 p.Ala52Ser Uncertain significance ★★ ⚠ same type
- AGAP1 p.Ala570Gly Uncertain significance ★★ same type
- AGAP1 p.Ala809Ser Uncertain significance ★★ ⚠ same type
- AGAP1 p.Arg14Trp Uncertain significance ★★ ⚠ same type
- AGAP1 p.Arg313His Uncertain significance ★★ ⚠ same type
- AGAP1 p.Arg696Trp Uncertain significance ★★ ⚠ same type
- AGAP1 p.Arg770Cys 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/agap1-p-ser257 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown