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GNB3 p.Val315=

c.945G>A · rs144936565 · VCV1104469

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.012%, afr)

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
REVEL0.047moderately benign-leaning
Splicing
SpliceAI—not looked up on this page · why
Constraint at this position
ConservationphyloP 0.42GERP -2.3, phastCons 0.99
Overall
CADD7.252PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.012% African / African-American · 9/74,816 alleles
Filtering AF 0.00624% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00468%
Overall 0.000563% 9/1,599,550 alleles · ultra-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
GNB3
Protein
p.Val315=
Coding
c.945G>A
MANE Select
NM_031299 · reported on NM_002075
dbSNP
rs144936565
Type
single nucleotide variant
Location
chr12:6846820 (GRCh38)
Full GNB3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

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/gnb3-p-val315 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown