Is DSG2 p.Asn658= (c.1974T>C) pathogenic?

DSG2 p.Asn658= (c.1974T>C) is classified Likely benign in DSG2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-04-11). Very rare (popmax 0.000763%, nfe); Associated with Cardiovascular phenotype.

What condition is associated with DSG2 p.Asn658= (c.1974T>C)?

DSG2 p.Asn658= (c.1974T>C) is associated with Cardiovascular phenotype, arrhythmogenic right ventricular dysplasia 10 (ClinVar).

How common is DSG2 p.Asn658= (c.1974T>C) in the general population?

DSG2 p.Asn658= (c.1974T>C) is very rare (popmax 0.000763%, nfe) (gnomAD).

DSG2 p.Asn658=

c.1974T>C · rs778751829 · VCV3221938

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

very rare (popmax 0.000763%, nfe)

Conditions

Cardiovascular phenotype

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 -0.12	GERP -3.9, phastCons 0.7
Overall
CADD	5.494	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000763% European (non-Finnish) · 9/1,179,988 alleles

Filtering AF 0.000359% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00026%

Overall 0.000616% 9/1,461,798 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.Asn658=
Coding: c.1974T>C
MANE Select: NM_001943
dbSNP: rs778751829
Type: single nucleotide variant
Location: chr18:31541287 (GRCh38)
Gene constraint: LOEUF 0.764 · pLI <0.01 · ClinGen HI 2/3 (gnomAD)
Structure: AlphaFold pLDDT 65.27 · 12 PDB
Residue 658: a UniProt-annotated variant site (in arvd10; uncertain significance; evidence of residual myocardium, fibrous tissue, fatty tissue, dysmetric and dysmorphic nuclei and prominent cytoplasmic vacuolization; decreases the number of desmosomes at intercalated disks also increases desmosome gap; smaller intercellular gaps, with repeating couplings, abnormally located desmosomes and pale internal plaques)

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

Disease context

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

Also linked: arrhythmogenic right ventricular dysplasia 10

Similar variants

DSG2 p.Asn658Thr 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
DSG2 c.829-2A>T Likely pathogenic ★★ same condition
DSG2 p.Arg46Gln 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/dsg2-p-asn658 (accessed [today's date]).

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