Is DSP p.Arg1506fs (c.4518del) pathogenic?

DSP p.Arg1506fs (c.4518del) is classified Pathogenic/Likely pathogenic in DSP (ClinVar, Multiple submitters, 5 submitters; last evaluated 2025-12-17). Very rare (popmax 0.00133%, afr); Associated with arrhythmogenic cardiomyopathy with wooly hair and keratoderma.

What condition is associated with DSP p.Arg1506fs (c.4518del)?

DSP p.Arg1506fs (c.4518del) is associated with arrhythmogenic cardiomyopathy with wooly hair and keratoderma, cardiac rhythm disease, arrhythmogenic right ventricular dysplasia 8 (ClinVar).

How common is DSP p.Arg1506fs (c.4518del) in the general population?

DSP p.Arg1506fs (c.4518del) is very rare (popmax 0.00133%, afr) (gnomAD).

How is Carvajal syndrome inherited?

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

DSP p.Arg1506fs

c.4518del · rs1289037294 · VCV918115

Pathogenic/Likely pathogenic Multiple submitters

Classification

Pathogenic/Likely pathogenic

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 5 submitters

Consequence

frameshift

predicted LoF

gnomAD v4.1

Rare

very rare (popmax 0.00133%, afr)

Conditions

arrhythmogenic cardiomyopathy with wooly hair and keratoderma

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	frameshift	predicted loss-of-function in a haploinsufficient gene (ClinGen)
NMD	predicted	premature termination codon in exon 23 of 24
Splicing
SpliceAI	—	not assessed · substitutions only
Constraint at this position
Conservation	phyloP 2	GERP -1.8, phastCons 0.83
Overall
CADD	21.5	PHRED · no single calibrated threshold — expert panels disagree

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00133% African / African-American · 1/74,928 alleles

Overall 0.000657% 1/152,200 alleles · very rare

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.Arg1506fs
Coding: c.4518del
MANE Select: NM_004415
dbSNP: rs1289037294
Type: Deletion
Location: chr6:7580708 (GRCh38)
Gene constraint: LOEUF 0.443 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 1506: a UniProt-annotated variant site (in arvd8; uncertain significance); a UniProt-annotated variant site (in dcwhkta; uncertain significance); a UniProt-annotated variant site (in dcwhk; uncertain significance; abolishes expression in the myocardium); the 'central fibrous rod domain' region; the 'binds to telomeres' region; 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

arrhythmogenic cardiomyopathy with wooly hair and keratoderma — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: cardiac rhythm disease arrhythmogenic right ventricular dysplasia 8

For Carvajal syndrome (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive
Onset: Childhood, Infancy, Neonatal

Similar variants

DSP p.Arg1506Lys Likely benign ★ same residue
DSP c.2131-3_2131del Likely pathogenic ★★ same condition
DSP p.Ala2092fs Pathogenic/Likely pathogenic ★★ same condition
DSP p.Arg1113fs Pathogenic ★★ same condition
DSP p.Arg1173fs Pathogenic ★★ same condition
DSP p.Asn1346fs Pathogenic/Likely pathogenic ★★ same condition
DSP p.Asn257fs Pathogenic ★★ same condition
DSP p.Asp1120fs Pathogenic/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-arg1506fs (accessed [today's date]).

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