Is DSC2 p.Arg357Cys (c.1069C>T) pathogenic?

DSC2 p.Arg357Cys (c.1069C>T) is classified Uncertain significance in DSC2 (ClinVar, Multiple submitters, 9 submitters; last evaluated 2026-01-12). AlphaMissense: likely benign (0.151); Very rare (popmax 0.005%, amr); Associated with Cardiovascular phenotype.

What condition is associated with DSC2 p.Arg357Cys (c.1069C>T)?

DSC2 p.Arg357Cys (c.1069C>T) is associated with Cardiovascular phenotype, cardiomyopathy, arrhythmogenic right ventricular dysplasia 11 (ClinVar).

How common is DSC2 p.Arg357Cys (c.1069C>T) in the general population?

DSC2 p.Arg357Cys (c.1069C>T) is very rare (popmax 0.005%, amr) (gnomAD).

What do computational predictors say about DSC2 p.Arg357Cys (c.1069C>T)?

AlphaMissense predicts likely benign (score 0.151) — an in-silico prediction, not a clinical call.

DSC2 p.Arg357Cys

c.1069C>T · rs879255385 · VCV252639

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 9 submitters

AlphaMissense

likely benign

0.151 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.005%, amr)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Cardiovascular phenotype

Computational evidence

Protein change
AlphaMissense	0.151	likely benign
REVEL	0.235	benign-leaning
SaProt	LLR -11.61	damaging
⇒ SaProt calls this damaging; AlphaMissense and REVEL do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.2	GERP -0.025, phastCons 0.36
Regional constraint	o/e 0.98	unconstrained · MANE · 34 kb · p 0.48 · regional, not allelic
Overall
CADD	25.0	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.005% Admixed American · 3/59,974 alleles

Filtering AF 0.00133% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000668%

Overall 0.00118% 19/1,613,112 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.005%	19,991
Remaining individualsnot grpmax-eligible	0.00481%	20,804
African / African-American	0.00267%	37,447
European (non-Finnish)	0.000932%	107,257

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.Arg357Cys
Coding: c.1069C>T
MANE Select: NM_024422
dbSNP: rs879255385
Type: single nucleotide variant
Location: chr18:31082934 (GRCh38)
Gene constraint: LOEUF 0.743 · pLI <0.01 · ClinGen HI 1/3 (gnomAD)
Structure: AlphaFold pLDDT 77.26 · 3 PDB
Residue 357: a β-strand; the cadherin 3 domain

Full DSC2 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: cardiomyopathy arrhythmogenic right ventricular dysplasia 11 familial isolated arrhythmogenic right ventricular dysplasia arrhythmogenic right ventricular cardiomyopathy

Similar variants

DSC2 p.Arg357Leu Uncertain significance ★★ ⚠ same residue
DSC2 p.Arg357His Conflicting classifications of pathogenicity ★ ⚠ same residue
DSC2 c.1521-1G>A Likely pathogenic ★★ same condition
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

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-arg357cys (accessed [today's date]).

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