Is COG5 p.Pro435= (c.1305A>G) pathogenic?

COG5 p.Pro435= (c.1305A>G) is classified Likely benign in COG5 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-02-24). Absent from gnomAD v4.1; Associated with COG5-congenital disorder of glycosylation.

What condition is associated with COG5 p.Pro435= (c.1305A>G)?

COG5 p.Pro435= (c.1305A>G) is associated with COG5-congenital disorder of glycosylation (ClinVar).

How common is COG5 p.Pro435= (c.1305A>G) in the general population?

COG5 p.Pro435= (c.1305A>G) is absent from gnomAD v4.1 (gnomAD).

How is COG5-CDG inherited?

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

COG5 p.Pro435=

c.1305A>G · rs929845700 · VCV1662397

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Not reported

no allele count reported in gnomAD v4.1 (AN 1,562,840)

Conditions

COG5-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 -0.34	GERP -4.9, phastCons 0.3
Overall
CADD	3.573	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

No allele count reported in gnomAD v4.1 (AN 1,562,840). This is missing data, not an absence: the variant may or may not be present in gnomAD. Rarity (ACMG PM2) and BA1/BS1 cannot be assessed for it.

Variant & gene context

Gene: COG5
Protein: p.Pro435=
Coding: c.1305A>G
MANE Select: NM_006348
dbSNP: rs929845700
Type: single nucleotide variant
Location: chr7:107298150 (GRCh38)
Gene constraint: LOEUF 1.026 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 84.37

Full COG5 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

COG5-congenital disorder of glycosylation — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For COG5-CDG (Orphanet):

Inheritance: Autosomal recessive
Onset: Childhood

Similar variants

COG5 p.Pro435Arg Uncertain significance ★ ⚠ same residue
COG5 p.Pro435Ser Uncertain significance ★ ⚠ same residue
COG5 c.1475+1G>A Likely pathogenic ★★ same condition
COG5 c.2295+2T>C Pathogenic/Likely pathogenic ★★ same condition
COG5 p.Arg205Ter Pathogenic ★★ same condition
COG5 p.Arg283Ter Pathogenic ★★ same condition
COG5 p.Arg461Ter Pathogenic/Likely pathogenic ★★ same condition
COG5 p.Arg690Ter 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/cog5-p-pro435 (accessed [today's date]).

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