Is DSP p.Tyr494= (c.1482C>T) pathogenic?

DSP p.Tyr494= (c.1482C>T) is classified Likely benign in DSP (ClinVar, Multiple submitters, 8 submitters; last evaluated 2025-12-31). Ultra-rare (popmax 0.0198%, sas); Associated with Cardiovascular phenotype.

What condition is associated with DSP p.Tyr494= (c.1482C>T)?

DSP p.Tyr494= (c.1482C>T) is associated with Cardiovascular phenotype, cardiomyopathy, arrhythmogenic cardiomyopathy with wooly hair and keratoderma (ClinVar).

How common is DSP p.Tyr494= (c.1482C>T) in the general population?

DSP p.Tyr494= (c.1482C>T) is ultra-rare (popmax 0.0198%, sas) (gnomAD).

DSP p.Tyr494=

c.1482C>T · rs772925425 · VCV246659

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 8 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0198%, sas)

Conditions

Cardiovascular phenotype

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · C>A here scores Δ0.78 · evaluated, not missing
Constraint at this position
Conservation	phyloP -14	GERP -3.7
Overall
CADD	3.138	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0198% South Asian · 18/91,088 alleles

Filtering AF 0.0127% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0105%

Overall 0.00595% 96/1,614,070 alleles · ultra-rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.0198%	5,060
Middle Eastern	0.0164%	6,084
Remaining individualsnot grpmax-eligible	0.0128%	7,811
European (non-Finnish)	0.00576%	17,353
African / African-American	0.00133%	74,920

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: DSP
Protein: p.Tyr494=
Coding: c.1482C>T
MANE Select: NM_004415
dbSNP: rs772925425
Type: single nucleotide variant
Location: chr6:7569248 (GRCh38)
Gene constraint: LOEUF 0.443 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 494: a β-strand; the 'globular 1' region; the 'interaction with mapre1' region; the 'interaction with jup and pkp2' region; the sh3 domain; 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.Tyr494Phe Benign/Likely benign ★★ same residue
DSP p.Tyr494Ter Pathogenic ★ 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
DSP c.2130+1G>A Pathogenic/Likely pathogenic ★★ same condition
DSP c.2297+1G>A Likely pathogenic ★★ same condition
DSP c.2298-1G>C 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-tyr494 (accessed [today's date]).

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