Is DSG2 p.Gly166= (c.498G>A) pathogenic?

DSG2 p.Gly166= (c.498G>A) is classified Likely benign in DSG2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-06-23). Very rare (popmax 0.000932%, nfe); Associated with cardiomyopathy.

What condition is associated with DSG2 p.Gly166= (c.498G>A)?

DSG2 p.Gly166= (c.498G>A) is associated with cardiomyopathy, arrhythmogenic right ventricular dysplasia 10 (ClinVar).

How common is DSG2 p.Gly166= (c.498G>A) in the general population?

DSG2 p.Gly166= (c.498G>A) is very rare (popmax 0.000932%, nfe) (gnomAD).

DSG2 p.Gly166=

c.498G>A · VCV3702403

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

very rare (popmax 0.000932%, nfe)

Conditions

cardiomyopathy

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 0.28	phastCons 0.89
Overall
CADD	8.473	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000932% European (non-Finnish) · 11/1,179,638 alleles

Filtering AF 0.0005% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000366%

Overall 0.000682% 11/1,612,596 alleles · very rare

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: DSG2
Protein: p.Gly166=
Coding: c.498G>A
MANE Select: NM_001943
Type: single nucleotide variant
Location: chr18:31521218 (GRCh38)
Gene constraint: LOEUF 0.764 · pLI <0.01 · ClinGen HI 2/3 (gnomAD)
Structure: AlphaFold pLDDT 65.27 · 12 PDB
Residue 166: the cadherin 2 domain; a β-strand

Full DSG2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

cardiomyopathy — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: arrhythmogenic right ventricular dysplasia 10

Similar variants

DSG2 p.Gly166Arg Uncertain significance ★ ⚠ same residue
DSG2 p.Gly166fs Conflicting classifications of pathogenicity ★ same residue
DSG2 p.Gly166Glu Uncertain significance ★ same residue
DSG2 c.1423+1G>T Likely pathogenic ★★ same condition
DSG2 c.1424-1G>A Likely pathogenic ★★ same condition
DSG2 c.523+1G>T Pathogenic/Likely pathogenic ★★ same condition
DSG2 c.690+1G>A Pathogenic ★★ same condition
DSG2 c.81+1G>T 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/dsg2-p-gly166 (accessed [today's date]).

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