GNAT2 p.Val174=
c.522G>A · rs1487217921 · VCV1089873
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.0011%, sas)
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 -0.047 | GERP -1.9, phastCons 0.56 |
| Overall | ||
| CADD | 7.44 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0011%
South Asian · 1/91,018 alleles
Overall
6.21e-05%
1/1,611,484 alleles · very rare
exomes 1/1,459,210 · genomes 0/152,274 · joint denominator
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
- GNAT2
- Protein
- p.Val174=
- Coding
- c.522G>A
- MANE Select
- NM_001377295
- dbSNP
- rs1487217921
- Type
- single nucleotide variant
- Location
- chr1:109606376 (GRCh38)
- Gene constraint
- LOEUF 1.176 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 94.21 · 2 PDB
- Residue 174
- the g-alpha domain; the 'g2 motif' region
Similar variants
- GNAT2 p.Val174Met Uncertain significance ★ ⚠ same residue
- GNAT2 p.Arg105Ter Pathogenic/Likely pathogenic ★★ same type
- GNAT2 p.Arg161Ter Pathogenic ★★ same type
- GNAT2 p.Arg313Ter Pathogenic ★★ same type
- GNAT2 p.Gln58Ter Pathogenic/Likely pathogenic ★★ same type
- GNAT2 c.118+5G>A Uncertain significance ★★ same type
- GNAT2 c.590+6T>C Uncertain significance ★★ same type
- GNAT2 c.-53-78G>A 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/gnat2-p-val174 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown