Is DSC2 p.Arg531= (c.1591A>C) pathogenic?

DSC2 p.Arg531= (c.1591A>C) is classified Likely benign in DSC2 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2025-12-26). Ultra-rare (popmax 0.0274%, sas); Associated with arrhythmogenic right ventricular dysplasia 11.

What condition is associated with DSC2 p.Arg531= (c.1591A>C)?

DSC2 p.Arg531= (c.1591A>C) is associated with arrhythmogenic right ventricular dysplasia 11, cardiomyopathy (ClinVar).

How common is DSC2 p.Arg531= (c.1591A>C) in the general population?

DSC2 p.Arg531= (c.1591A>C) is ultra-rare (popmax 0.0274%, sas) (gnomAD).

DSC2 p.Arg531=

Q: How is Inherited isolated arrhythmogenic cardiomyopathy inherited?

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

c.1591A>C · rs727502981 · VCV163187

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0274%, sas)

Conditions

arrhythmogenic right ventricular dysplasia 11

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 6	GERP 0.89, phastCons 1
Overall
CADD	11.98	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0274% South Asian · 25/91,080 alleles

Filtering AF 0.019% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0163%

Overall 0.00171% 25/1,461,684 alleles · ultra-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: DSC2
Protein: p.Arg531=
Coding: c.1591A>C
MANE Select: NM_024422
dbSNP: rs727502981
Type: single nucleotide variant
Location: chr18:31079919 (GRCh38)
Gene constraint: LOEUF 0.743 · pLI <0.01 · ClinGen HI 1/3 (gnomAD)
Structure: AlphaFold pLDDT 77.26 · 3 PDB
Residue 531: the cadherin 4 domain

Full DSC2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

arrhythmogenic right ventricular dysplasia 11 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: cardiomyopathy

For Inherited isolated arrhythmogenic cardiomyopathy (Orphanet):

Inheritance: Autosomal dominant
Onset: No data available

Similar variants

DSC2 p.Arg531Gly Uncertain significance ★★ ⚠ same residue
DSC2 p.Arg531Ser Uncertain significance ★★ ⚠ same residue
DSC2 c.1664-1G>A Likely pathogenic ★★ same condition
DSC2 c.354+2T>A Likely pathogenic ★★ same condition
DSC2 c.355-1G>A Likely pathogenic ★★ same condition
DSC2 p.Gln554Ter Pathogenic ★★ same condition
DSC2 p.Gln620Ter Pathogenic ★★ same condition
DSC2 p.Glu127Ter 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/dsc2-p-arg531 (accessed [today's date]).

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