GNB5 p.Ala55=
c.165G>T · rs770264463 · VCV1188787
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0413%, nfe)
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 0.43 | GERP 0.13, phastCons 1 |
| Overall | ||
| CADD | 13.68 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0413%
European (non-Finnish) · 476/1,151,550 alleles
Filtering AF
0.0382%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.037%
Overall
0.0337%
523/1,554,126 alleles · ultra-rare
exomes 489/1,402,424 · genomes 34/151,702 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| European (non-Finnish)grpmax | 0.0413% | 2,419 |
| Remaining individualsnot grpmax-eligible | 0.0286% | 3,502 |
| Finnishnot grpmax-eligible | 0.0279% | 3,582 |
| Admixed American | 0.0185% | 5,395 |
| African / African-American | 0.00426% | 23,468 |
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
- GNB5
- Protein
- p.Ala55=
- Coding
- c.165G>T
- MANE Select
- NM_016194
- dbSNP
- rs770264463
- Type
- single nucleotide variant
- Location
- chr15:52179841 (GRCh38)
- Gene constraint
- LOEUF 1.155 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 93.92 · 37 PDB
Similar variants
- GNB5 p.Ala55Val Uncertain significance ★ ⚠ same residue
- GNB5 p.Arg288Gln Pathogenic/Likely pathogenic ★★ ⚠ same type
- GNB5 p.Ser123Leu Pathogenic ★★ same type
- GNB5 p.Ser123Trp Likely pathogenic ★★ same type
- GNB5 p.Tyr344Ter Pathogenic ★★ same type
- GNB5 p.Ala142Thr Uncertain significance ★★ ⚠ same type
- GNB5 p.Arg98Gly Uncertain significance ★★ ⚠ same type
- GNB5 p.Asn252Ser 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/gnb5-p-ala55 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown