Is DSP p.Ser2746= (c.8238C>T) pathogenic?

DSP p.Ser2746= (c.8238C>T) is classified Likely benign in DSP (ClinVar, Multiple submitters, 3 submitters; last evaluated 2025-12-15). Very rare (popmax 0.000169%, nfe); Associated with arrhythmogenic cardiomyopathy with wooly hair and keratoderma.

What condition is associated with DSP p.Ser2746= (c.8238C>T)?

DSP p.Ser2746= (c.8238C>T) is associated with arrhythmogenic cardiomyopathy with wooly hair and keratoderma, cardiomyopathy, arrhythmogenic right ventricular dysplasia 8 (ClinVar).

How common is DSP p.Ser2746= (c.8238C>T) in the general population?

DSP p.Ser2746= (c.8238C>T) is very rare (popmax 0.000169%, nfe) (gnomAD).

How is Carvajal syndrome inherited?

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

DSP p.Ser2746=

c.8238C>T · rs781351433 · VCV799795

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

very rare (popmax 0.000169%, nfe)

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.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 1.7	GERP 0.026, phastCons 1
Overall
CADD	8.377	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000169% European (non-Finnish) · 2/1,180,040 alleles

Filtering AF 2.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.1e-05%

Overall 0.000124% 2/1,614,170 alleles · very rare exomes 2/1,461,876 · genomes 0/152,294 · joint denominator

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.Ser2746=
Coding: c.8238C>T
MANE Select: NM_004415
dbSNP: rs781351433
Type: single nucleotide variant
Location: chr6:7585500 (GRCh38)
Gene constraint: LOEUF 0.443 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 2746: 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); a UniProt-annotated variant site (in ebla; uncertain significance); a UniProt-annotated variant site (in dcwhk; uncertain significance); the 'binds to telomeres' region; the 'globular 2' region; the '4.5 x 38 aa tandem repeats (domain c)' 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: cardiomyopathy arrhythmogenic right ventricular dysplasia 8

For Carvajal syndrome (Orphanet):

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

Similar variants

DSP p.Ser2746Cys Uncertain significance ★★ ⚠ same residue
DSP p.Ser2746Thr Uncertain significance ★★ ⚠ same residue
DSP p.Ser2746Gly 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
DSP c.2130+1G>A Pathogenic/Likely pathogenic ★★ same condition
DSP c.2297+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-ser2746 (accessed [today's date]).

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