Is MOGS p.Gln342= (c.1026G>A) pathogenic?

MOGS p.Gln342= (c.1026G>A) is classified Likely benign in MOGS (ClinVar, Single submitter, 1 submitter; last evaluated 2023-07-22). Absent from gnomAD v4.1; Associated with MOGS-congenital disorder of glycosylation.

What condition is associated with MOGS p.Gln342= (c.1026G>A)?

MOGS p.Gln342= (c.1026G>A) is associated with MOGS-congenital disorder of glycosylation (ClinVar).

How common is MOGS p.Gln342= (c.1026G>A) in the general population?

MOGS p.Gln342= (c.1026G>A) is absent from gnomAD v4.1 (gnomAD).

How is MOGS-CDG inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

MOGS p.Gln342=

c.1026G>A · rs1260871795 · VCV2919485

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

MOGS-congenital disorder of glycosylation

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 -0.88	GERP -1
Overall
CADD	3.075	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: MOGS
Protein: p.Gln342=
Coding: c.1026G>A
MANE Select: NM_006302
dbSNP: rs1260871795
Type: single nucleotide variant
Location: chr2:74462763 (GRCh38)
Gene constraint: LOEUF 0.85 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 92.42

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

Disease context

MOGS-congenital disorder of glycosylation — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For MOGS-CDG (Orphanet):

Inheritance: Autosomal recessive
Onset: Infancy, Neonatal

Similar variants

MOGS p.Gln342Glu Uncertain significance ★ ⚠ same residue
MOGS p.Arg495Ter Pathogenic/Likely pathogenic ★★ same condition
MOGS p.Gln124Ter Pathogenic ★★ same condition
MOGS p.Gln505Ter Pathogenic/Likely pathogenic ★★ same condition
MOGS p.Ala22Glu Uncertain significance ★★ ⚠ same condition
MOGS p.Ala292Asp Uncertain significance ★★ ⚠ same condition
MOGS p.Ala292Pro Uncertain significance ★★ ⚠ same condition
MOGS p.Ala41Val 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/mogs-p-gln342 (accessed [today's date]).

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