Is DSC2 p.Ile577Met (c.1731A>G) pathogenic?

DSC2 p.Ile577Met (c.1731A>G) is classified Uncertain significance in DSC2 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2025-07-14). AlphaMissense: ambiguous (0.3834); Absent from gnomAD v4.1; Associated with arrhythmogenic right ventricular dysplasia 11.

What condition is associated with DSC2 p.Ile577Met (c.1731A>G)?

DSC2 p.Ile577Met (c.1731A>G) is associated with arrhythmogenic right ventricular dysplasia 11, cardiomyopathy (ClinVar).

How common is DSC2 p.Ile577Met (c.1731A>G) in the general population?

DSC2 p.Ile577Met (c.1731A>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about DSC2 p.Ile577Met (c.1731A>G)?

AlphaMissense predicts ambiguous (score 0.3834) — an in-silico prediction, not a clinical call.

DSC2 p.Ile577Met

Q: How is Inherited isolated arrhythmogenic cardiomyopathy inherited?

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

c.1731A>G · rs2144800239 · VCV1307166

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

ambiguous

0.3834 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

arrhythmogenic right ventricular dysplasia 11

Computational evidence

Protein change
AlphaMissense	0.3834	ambiguous
REVEL	0.35	indeterminate
SaProt	LLR -10.42	damaging
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -1.2	GERP -2.4
Regional constraint	o/e 0.98	unconstrained · MANE · 34 kb · p 0.48 · regional, not allelic
Overall
CADD	11.4	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

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: DSC2
Protein: p.Ile577Met
Coding: c.1731A>G
MANE Select: NM_024422
dbSNP: rs2144800239
Type: single nucleotide variant
Location: chr18:31074840 (GRCh38)
Gene constraint: LOEUF 0.743 · pLI <0.01 · ClinGen HI 1/3 (gnomAD)
Structure: AlphaFold pLDDT 77.26 · 3 PDB
Residue 577: a UniProt-annotated variant site (in arvd11; likely pathogenic; mislocalization of dsc2 to the cytoplasm within intercalated disks of the heart); 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.Ile577Thr Uncertain significance ★★ ⚠ same residue
DSC2 p.Ile577Leu Conflicting classifications of pathogenicity ★ ⚠ same residue
DSC2 p.Ile577Val Conflicting classifications of pathogenicity ★ ⚠ 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

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-ile577met (accessed [today's date]).

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