GABRB2 p.Ala272=
c.816T>A · rs766814600 · VCV388441
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00439%, sas)
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 -0.012 | GERP -4.1, phastCons 0.036 |
| Overall | ||
| CADD | 7.674 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00439%
South Asian · 4/91,062 alleles
Filtering AF
0.00143%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000891%
Overall
0.000274%
4/1,461,664 alleles · very rare
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
- GABRB2
- Protein
- p.Ala272=
- Coding
- c.816T>A
- MANE Select
- NM_001371727
- dbSNP
- rs766814600
- Type
- single nucleotide variant
- Location
- chr5:161334768 (GRCh38)
- Gene constraint
- LOEUF 0.426 · pLI 1.00 (gnomAD)
- Structure
- AlphaFold pLDDT 76.65 · 31 PDB
- Residue 272
- an α-helix
Similar variants
- GABRB2 p.Ala272Thr Uncertain significance ★ ⚠ same residue
- GABRB2 p.Ala272Val Uncertain significance ★ ⚠ same residue
- GABRB2 p.Ala304Val Pathogenic/Likely pathogenic ★★ same type
- GABRB2 p.Arg293Trp Pathogenic/Likely pathogenic ★★ same type
- GABRB2 p.Asp125Asn Pathogenic ★★ same type
- GABRB2 p.Ile288Thr Likely pathogenic ★★ ⚠ same type
- GABRB2 p.Lys303Asn Pathogenic/Likely pathogenic ★★ same type
- GABRB2 p.Phe245Leu Pathogenic/Likely 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/gabrb2-p-ala272 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown