AP4E1 p.Leu299=
c.897T>C · rs111666207 · VCV2050249
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
Spastic paraplegia
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | <0.2 | no splice effect predicted · four deltas, not one · how we know |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP 1.9 | GERP -1, phastCons 1 |
| Overall | ||
| CADD | 9.068 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00167%
Admixed American · 1/59,964 alleles
Filtering AF
0.000766%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000607%
Overall
0.00106%
17/1,609,030 alleles · very rare
exomes 17/1,456,840 · genomes 0/152,190 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.00167% | 59,964 |
| Remaining individualsnot grpmax-eligible | 0.00161% | 62,296 |
| European (non-Finnish) | 0.00128% | 78,391 |
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
- AP4E1
- Protein
- p.Leu299=
- Coding
- c.897T>C
- MANE Select
- NM_007347
- dbSNP
- rs111666207
- Type
- single nucleotide variant
- Location
- chr15:50934651 (GRCh38)
- Gene constraint
- LOEUF 0.576 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 72.42 · 4 PDB
Similar variants
- AP4E1 p.Arg304Ter Pathogenic/Likely pathogenic ★★ same condition
- AP4E1 p.Ala119Ser Uncertain significance ★★ ⚠ same condition
- AP4E1 p.Ala45Thr Uncertain significance ★★ ⚠ same condition
- AP4E1 p.Ala475Val Uncertain significance ★★ ⚠ same condition
- AP4E1 p.Arg646Cys Uncertain significance ★★ same condition
- AP4E1 p.Asn1086Ser Uncertain significance ★★ ⚠ same condition
- AP4E1 p.Asp484Val Uncertain significance ★★ ⚠ same condition
- AP4E1 p.Asp938Gly 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/ap4e1-p-leu299 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown