Is DSC2 p.Arg833Cys (c.2497C>T) pathogenic?

DSC2 p.Arg833Cys (c.2497C>T) is classified Conflicting classifications of pathogenicity in DSC2 (ClinVar, Conflicting submitters, 8 submitters; last evaluated 2026-01-05). AlphaMissense: likely benign (0.1197); Rare (popmax 0.312%, eas); Associated with Cardiovascular phenotype.

What condition is associated with DSC2 p.Arg833Cys (c.2497C>T)?

DSC2 p.Arg833Cys (c.2497C>T) is associated with Cardiovascular phenotype, cardiomyopathy, hypertrophic cardiomyopathy (ClinVar).

How common is DSC2 p.Arg833Cys (c.2497C>T) in the general population?

DSC2 p.Arg833Cys (c.2497C>T) is rare (popmax 0.312%, eas) (gnomAD).

What do computational predictors say about DSC2 p.Arg833Cys (c.2497C>T)?

AlphaMissense predicts likely benign (score 0.1197) — an in-silico prediction, not a clinical call.

DSC2 p.Arg833Cys

c.2497C>T · rs142410803 · VCV180318

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 8 submitters

AlphaMissense

likely benign

0.1197 · ACMG-weighted

gnomAD v4.1

Rare

rare (popmax 0.312%, eas)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

Cardiovascular phenotype

Computational evidence

Protein change
AlphaMissense	0.1197	likely benign
REVEL	0.499	indeterminate
SaProt	LLR -7.66	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.2	GERP 1.9, phastCons 0.99
Regional constraint	o/e 0.98	unconstrained · MANE · 34 kb · p 0.48 · regional, not allelic
Overall
CADD	29.5	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 0.312% East Asian · 140/44,864 alleles

Filtering AF 0.27% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.254%

Overall 0.0126% 203/1,613,512 alleles · rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.312%	320
Remaining individualsnot grpmax-eligible	0.048%	2,082
South Asian	0.0242%	4,139
Middle Eastern	0.0179%	5,574
European (non-Finnish)	0.000847%	118,000

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.Arg833Cys
Coding: c.2497C>T
MANE Select: NM_024422
dbSNP: rs142410803
Type: single nucleotide variant
Location: chr18:31068905 (GRCh38)
Gene constraint: LOEUF 0.743 · pLI <0.01 · ClinGen HI 1/3 (gnomAD)
Structure: AlphaFold pLDDT 77.26 · 3 PDB
Residue 833: a UniProt-annotated variant site (in arvd11; likely pathogenic; mislocalization of dsc2 to the cytoplasm within intercalated disks of the heart)

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 hypertrophic cardiomyopathy arrhythmogenic right ventricular dysplasia 11

Similar variants

DSC2 p.Arg833Gly Conflicting classifications of pathogenicity ★ ⚠ same residue
DSC2 p.Arg833His Conflicting classifications of pathogenicity ★ ⚠ same residue
DSC2 p.Arg833= Likely benign ★ 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

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-arg833cys (accessed [today's date]).

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