Is DSP p.Met1226Val (c.3676A>G) pathogenic?

DSP p.Met1226Val (c.3676A>G) is classified Likely benign in DSP (ClinVar, Single submitter, 1 submitter; last evaluated 2025-10-13). AlphaMissense: likely benign (0.0724); Very rare (popmax 0.00534%, afr); Associated with arrhythmogenic cardiomyopathy with wooly hair and keratoderma.

How common is DSP p.Met1226Val (c.3676A>G) in the general population?

DSP p.Met1226Val (c.3676A>G) is very rare (popmax 0.00534%, afr) (gnomAD).

How is Carvajal syndrome inherited?

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

What do computational predictors say about DSP p.Met1226Val (c.3676A>G)?

AlphaMissense predicts likely benign (score 0.0724) — an in-silico prediction, not a clinical call.

DSP p.Met1226Val

Q: What condition is associated with DSP p.Met1226Val (c.3676A>G)?

DSP p.Met1226Val (c.3676A>G) is associated with arrhythmogenic cardiomyopathy with wooly hair and keratoderma, arrhythmogenic right ventricular dysplasia 8 (ClinVar).

c.3676A>G · rs762341356 · VCV2085028

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0724 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00534%, afr)

Conditions

arrhythmogenic cardiomyopathy with wooly hair and keratoderma

Computational evidence

Protein change
AlphaMissense	0.0724	likely benign
REVEL	0.345	indeterminate
SaProt	—	not scored · why
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 1.9	GERP -1.2, phastCons 1
Regional constraint	o/e 0.93	unconstrained · MANE · 12 kb · p 0.0024 · regional, not allelic
Overall
CADD	9.368	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL is an independent agreement signal.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00534% African / African-American · 4/74,938 alleles

Filtering AF 0.00175% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00104%

Overall 0.000248% 4/1,614,086 alleles · very rare exomes 1/1,461,866 · genomes 3/152,220 · 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.Met1226Val
Coding: c.3676A>G
MANE Select: NM_004415
dbSNP: rs762341356
Type: single nucleotide variant
Location: chr6:7579866 (GRCh38)
Gene constraint: LOEUF 0.443 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 1226: a UniProt-annotated variant site (in arvd8; uncertain significance); a UniProt-annotated variant site (in dcwhkta; uncertain significance); 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: arrhythmogenic right ventricular dysplasia 8

For Carvajal syndrome (Orphanet):

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

Similar variants

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
DSP c.2298-2A>C Pathogenic/Likely pathogenic ★★ same condition
DSP c.2437-1G>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-met1226val (accessed [today's date]).

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