EIF2B4 p.Cys266=
c.798C>T · rs764856179 · VCV2798079
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.00134%, 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 3.3 | GERP -1.2, phastCons 1 |
| Overall | ||
| CADD | 14.73 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00134%
African / African-American · 1/74,834 alleles
Filtering AF
0.000124%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 9e-05%
Overall
0.000372%
6/1,613,840 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.00134% | 74,834 |
| European (non-Finnish) | 0.000424% | 235,999 |
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
- EIF2B4
- Protein
- p.Cys266=
- Coding
- c.798C>T
- MANE Select
- NM_001034116
- dbSNP
- rs764856179
- Type
- single nucleotide variant
- Location
- chr2:27367544 (GRCh38)
- Gene constraint
- LOEUF 0.687 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 77.37 · 38 PDB
- Residue 266
- an α-helix
Similar variants
- EIF2B4 c.32-1G>T Likely pathogenic ★★ same type
- EIF2B4 p.Arg357Gln Likely pathogenic ★★ ⚠ same type
- EIF2B4 p.Pro243Leu Pathogenic/Likely pathogenic ★★ ⚠ same type
- EIF2B4 p.Thr502Met Likely pathogenic ★★ same type
- EIF2B4 p.Tyr489His Pathogenic/Likely pathogenic ★★ same type
- EIF2B4 p.Ala228Thr Uncertain significance ★★ ⚠ same type
- EIF2B4 p.Ala349Thr Uncertain significance ★★ ⚠ same type
- EIF2B4 p.Ala66Thr 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/eif2b4-p-cys266 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown