Is GBE1 p.Pro191= (c.573A>G) pathogenic?

GBE1 p.Pro191= (c.573A>G) is classified Likely benign in GBE1 (ClinVar, Single submitter, 1 submitter; last evaluated 2020-11-07). Very rare (popmax 0.00226%, eas); Associated with Glycogen storage disease IV, classic hepatic.

What condition is associated with GBE1 p.Pro191= (c.573A>G)?

GBE1 p.Pro191= (c.573A>G) is associated with Glycogen storage disease IV, classic hepatic, glycogen storage disease due to glycogen branching enzyme deficiency (ClinVar).

How common is GBE1 p.Pro191= (c.573A>G) in the general population?

GBE1 p.Pro191= (c.573A>G) is very rare (popmax 0.00226%, eas) (gnomAD).

GBE1 p.Pro191=

c.573A>G · rs2107072385 · VCV1648454

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00226%, eas)

Conditions

Glycogen storage disease IV, classic hepatic

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 1.8	GERP -0.69, phastCons 1
Overall
CADD	10.54	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00226% East Asian · 1/44,196 alleles

Filtering AF 6.9e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.9e-05%

Overall 0.000279% 4/1,431,654 alleles · very rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00226%	44,196
European (non-Finnish)	0.000258%	387,642

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: GBE1
Protein: p.Pro191=
Coding: c.573A>G
MANE Select: NM_000158
dbSNP: rs2107072385
Type: single nucleotide variant
Location: chr3:81648974 (GRCh38)
Gene constraint: LOEUF 1.211 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 96.30 · 3 PDB
Residue 191: an α-helix

Full GBE1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Glycogen storage disease IV, classic hepatic — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: glycogen storage disease due to glycogen branching enzyme deficiency

Similar variants

GBE1 c.1109-1G>T Likely pathogenic ★★ same condition
GBE1 c.1236+1G>A Likely pathogenic ★★ same condition
GBE1 c.1336-1G>A Pathogenic/Likely pathogenic ★★ same condition
GBE1 c.143+1G>A Pathogenic ★★ same condition
GBE1 c.143+2T>C Pathogenic/Likely pathogenic ★★ same condition
GBE1 c.144-1G>C Pathogenic/Likely pathogenic ★★ same condition
GBE1 c.1618+1G>A Pathogenic/Likely pathogenic ★★ same condition
GBE1 c.1803+2T>C Pathogenic/Likely pathogenic ★★ 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/gbe1-p-pro191 (accessed [today's date]).

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