Is MOGS p.His823= (c.2469C>T) pathogenic?

MOGS p.His823= (c.2469C>T) is classified Likely benign in MOGS (ClinVar, Single submitter, 1 submitter; last evaluated 2024-05-22). Very rare (popmax 0.00439%, sas); Associated with MOGS-congenital disorder of glycosylation.

What condition is associated with MOGS p.His823= (c.2469C>T)?

MOGS p.His823= (c.2469C>T) is associated with MOGS-congenital disorder of glycosylation (ClinVar).

How common is MOGS p.His823= (c.2469C>T) in the general population?

MOGS p.His823= (c.2469C>T) is very rare (popmax 0.00439%, sas) (gnomAD).

How is MOGS-CDG inherited?

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

MOGS p.His823=

c.2469C>T · rs751765295 · VCV1987771

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00439%, sas)

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 -4.5	GERP -3.1
Overall
CADD	1.747	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00439% South Asian · 4/91,094 alleles

Filtering AF 0.00143% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000891%

Overall 0.00112% 18/1,613,986 alleles · very rare exomes 17/1,461,726 · genomes 1/152,260 · joint denominator

Ancestry group	Frequency	1 in
South Asiangrpmax	0.00439%	22,773
Admixed American	0.00333%	30,007
European (non-Finnish)	0.00102%	98,338

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: MOGS
Protein: p.His823=
Coding: c.2469C>T
MANE Select: NM_006302
dbSNP: rs751765295
Type: single nucleotide variant
Location: chr2:74461320 (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.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
MOGS p.Ala510Thr 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-his823 (accessed [today's date]).

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