Is DSP p.Arg451Cys (c.1351C>T) pathogenic?

DSP p.Arg451Cys (c.1351C>T) is classified Conflicting classifications of pathogenicity in DSP (ClinVar, Conflicting submitters, 4 submitters; last evaluated 2026-06-05). AlphaMissense: likely pathogenic (0.9807); Absent from gnomAD v4.1; Associated with Cardiovascular phenotype.

What condition is associated with DSP p.Arg451Cys (c.1351C>T)?

DSP p.Arg451Cys (c.1351C>T) is associated with Cardiovascular phenotype, cardiomyopathy, arrhythmogenic cardiomyopathy with wooly hair and keratoderma (ClinVar).

How common is DSP p.Arg451Cys (c.1351C>T) in the general population?

DSP p.Arg451Cys (c.1351C>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about DSP p.Arg451Cys (c.1351C>T)?

AlphaMissense predicts likely pathogenic (score 0.9807) — an in-silico prediction, not a clinical call.

DSP p.Arg451Cys

c.1351C>T · rs1057518309 · VCV373259

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 4 submitters

AlphaMissense

likely pathogenic

0.9807 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/2 damaging

AlphaMissense, REVEL

Conditions

Cardiovascular phenotype

Computational evidence

Protein change
AlphaMissense	0.9807	likely pathogenic · top 6% in DSP
REVEL	0.752	pathogenic-leaning
⇒ AlphaMissense and REVEL both call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 1.4	GERP -0.86, phastCons 0.78
Regional constraint	o/e 0.94	unconstrained · MANE · 29 kb · p 0.14 · regional, not allelic
Overall
CADD	27.1	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: DSP
Protein: p.Arg451Cys
Coding: c.1351C>T
MANE Select: NM_004415
dbSNP: rs1057518309
Type: single nucleotide variant
Location: chr6:7568521 (GRCh38)
Gene constraint: LOEUF 0.443 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 451: an α-helix; the 'globular 1' region; the 'interaction with mapre1' region; the 'interaction with jup and pkp2' region; a UniProt-annotated variant site (in arvd8; uncertain significance); a UniProt-annotated variant site (in dcwhkta; uncertain significance); a UniProt-annotated variant site (in arvd8; likely pathogenic; results in an unstable protein that forms perinuclear aggregates); a UniProt-annotated variant site (in arvd8 and dcwhkta; uncertain significance); a UniProt-annotated variant site (in arvd8)

Full DSP 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 cardiomyopathy with wooly hair and keratoderma arrhythmogenic right ventricular dysplasia 8

Similar variants

DSP p.Arg451Gly Pathogenic ★★ same residue
DSP p.Arg451Leu Uncertain significance ★★ ⚠ same residue
DSP p.Arg451His Conflicting classifications of pathogenicity ★ ⚠ same residue
DSP p.Arg451Pro Uncertain significance ★ ⚠ same residue
DSP p.Arg451Ser Uncertain significance ★ ⚠ same residue
DSP c.1141-2A>T Likely pathogenic ★★ same condition
DSP c.1266+2T>C Likely pathogenic ★★ same condition
DSP c.1574+1G>A 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/dsp-p-arg451cys (accessed [today's date]).

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