Is GABBR2 p.Val205= (c.615T>G) pathogenic?

GABBR2 p.Val205= (c.615T>G) is classified Likely benign in GABBR2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-03-03). Very rare (popmax 0.00333%, amr); Associated with Epileptic encephalopathy.

What condition is associated with GABBR2 p.Val205= (c.615T>G)?

GABBR2 p.Val205= (c.615T>G) is associated with Epileptic encephalopathy (ClinVar).

How common is GABBR2 p.Val205= (c.615T>G) in the general population?

GABBR2 p.Val205= (c.615T>G) is very rare (popmax 0.00333%, amr) (gnomAD).

GABBR2 p.Val205=

c.615T>G · rs1295770331 · VCV2094352

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00333%, amr)

Conditions

Epileptic encephalopathy

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 1.3	GERP -0.88, phastCons 1
Overall
CADD	11.71	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00333% Admixed American · 2/60,012 alleles

Filtering AF 0.000553% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000207%

Overall 0.000124% 2/1,614,058 alleles · very rare exomes 1/1,461,814 · genomes 1/152,244 · 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: GABBR2
Protein: p.Val205=
Coding: c.615T>G
MANE Select: NM_005458
dbSNP: rs1295770331
Type: single nucleotide variant
Location: chr9:98541888 (GRCh38)
Gene constraint: LOEUF 0.394 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 78.00 · 26 PDB
Residue 205: a β-strand

Full GABBR2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Epileptic encephalopathy — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

GABBR2 p.Val205Ile Conflicting classifications of pathogenicity ★ ⚠ same residue
GABBR2 p.Gly693Trp Pathogenic ★★ same condition
GABBR2 p.Ala444Thr Uncertain significance ★★ ⚠ same condition
GABBR2 p.Ala580Ser Uncertain significance ★★ ⚠ same condition
GABBR2 p.Ala69Pro Uncertain significance ★★ ⚠ same condition
GABBR2 p.Ala708Ser Uncertain significance ★★ ⚠ same condition
GABBR2 p.Arg301His Uncertain significance ★★ ⚠ same condition
GABBR2 p.Arg48Trp Uncertain significance ★★ ⚠ same condition

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/gabbr2-p-val205 (accessed [today's date]).

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