EP300 p.Arg1297Ter
c.3889A>T · rs2517820514 · VCV2575334
Likely pathogenic
Single submitter
Classification
Likely pathogenic
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
Consequence
nonsense (stop-gain)
predicted LoF
gnomAD v4.1
Absent
absent from gnomAD v4.1
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Consequence | nonsense (stop-gain) | predicted loss-of-function in a haploinsufficient gene (ClinGen) |
|---|---|---|
| NMD | predicted | premature termination codon in exon 24 of 31 |
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 4.1 | GERP 0.27, phastCons 1 |
| Overall | ||
| CADD | 37.0 | PHRED · no single calibrated threshold — expert panels disagree |
Predicted loss-of-function is descriptive, not an applied PVS1 code.
Population frequency
gnomAD v4.1 · exomes + genomes
Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.
Variant & gene context
- Gene
- EP300
- Protein
- p.Arg1297Ter
- Coding
- c.3889A>T
- MANE Select
- NM_001429
- dbSNP
- rs2517820514
- Type
- single nucleotide variant
- Location
- chr22:41168463 (GRCh38)
- Gene constraint
- LOEUF 0.164 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
- Structure
- AlphaFold pLDDT 54.88 · 60 PDB
- Residue 1297
- an α-helix; the cbp/p300-type hat domain
Similar variants
- EP300 c.1282+1G>A Pathogenic/Likely pathogenic ★★ same type
- EP300 c.3671+1G>A Pathogenic/Likely pathogenic ★★ same type
- EP300 c.3729-2A>G Pathogenic/Likely pathogenic ★★ same type
- EP300 c.3857A>G Pathogenic/Likely pathogenic ★★ ⚠ same type
- EP300 p.Arg1055Ter Pathogenic ★★ same type
- EP300 p.Arg1312Ter Pathogenic ★★ same type
- EP300 p.Arg1356Ter Pathogenic ★★ same type
- EP300 p.Arg1462Ter Pathogenic ★★ 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/ep300-p-arg1297ter (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown