Is GABRD p.Phe314= (c.942C>T) pathogenic?

GABRD p.Phe314= (c.942C>T) is classified Likely benign in GABRD (ClinVar, Single submitter, 1 submitter; last evaluated 2024-10-21). Rare (popmax 0.156%, eas); Associated with idiopathic generalized epilepsy.

What condition is associated with GABRD p.Phe314= (c.942C>T)?

GABRD p.Phe314= (c.942C>T) is associated with idiopathic generalized epilepsy (ClinVar).

How common is GABRD p.Phe314= (c.942C>T) in the general population?

GABRD p.Phe314= (c.942C>T) is rare (popmax 0.156%, eas) (gnomAD).

GABRD p.Phe314=

c.942C>T · rs139676179 · VCV767091

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

rare (popmax 0.156%, eas)

Conditions

idiopathic generalized epilepsy

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 3.2	phastCons 1
Overall
CADD	13.27	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.156% East Asian · 70/44,882 alleles

Filtering AF 0.127% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.116%

Overall 0.00614% 99/1,613,544 alleles · rare exomes 80/1,461,184 · genomes 19/152,360 · joint denominator

Ancestry group	Frequency	1 in
East Asiangrpmax	0.156%	641
African / African-American	0.0107%	9,383
European (non-Finnish)	0.00169%	59,001
Remaining individualsnot grpmax-eligible	0.0016%	62,498

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: GABRD
Protein: p.Phe314=
Coding: c.942C>T
MANE Select: NM_000815
dbSNP: rs139676179
Type: single nucleotide variant
Location: chr1:2029645 (GRCh38)
Gene constraint: LOEUF 0.786 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 79.82 · 10 PDB
Residue 314: an α-helix

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

Disease context

idiopathic generalized epilepsy — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

GABRD p.Pro257Leu Likely pathogenic ★★ same condition
GABRD p.Ala24Val Uncertain significance ★★ ⚠ same condition
GABRD p.Ala331Gly Uncertain significance ★★ ⚠ same condition
GABRD p.Ala437Val Uncertain significance ★★ ⚠ same condition
GABRD p.Arg23Gly Uncertain significance ★★ ⚠ same condition
GABRD p.Arg244Trp Uncertain significance ★★ ⚠ same condition
GABRD p.Arg378His Uncertain significance ★★ ⚠ same condition
GABRD p.Arg379Pro 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/gabrd-p-phe314 (accessed [today's date]).

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