Is TRDN p.Glu481Asp (c.1443G>C) pathogenic?

TRDN p.Glu481Asp (c.1443G>C) is classified Uncertain significance in TRDN (ClinVar, Single submitter, 1 submitter; last evaluated 2021-10-04). AlphaMissense: likely benign (0.115); Very rare (popmax 0.00198%, amr); Associated with catecholaminergic polymorphic ventricular tachycardia 1.

What condition is associated with TRDN p.Glu481Asp (c.1443G>C)?

TRDN p.Glu481Asp (c.1443G>C) is associated with catecholaminergic polymorphic ventricular tachycardia 1 (ClinVar).

How common is TRDN p.Glu481Asp (c.1443G>C) in the general population?

TRDN p.Glu481Asp (c.1443G>C) is very rare (popmax 0.00198%, amr) (gnomAD).

What do computational predictors say about TRDN p.Glu481Asp (c.1443G>C)?

AlphaMissense predicts likely benign (score 0.115) — an in-silico prediction, not a clinical call.

TRDN p.Glu481Asp

Q: How is Inherited isolated arrhythmogenic cardiomyopathy inherited?

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

c.1443G>C · rs2114727152 · VCV1524809

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.115 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00198%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

catecholaminergic polymorphic ventricular tachycardia 1

Computational evidence

Protein change
AlphaMissense	0.115	likely benign
REVEL	0.019	moderately benign-leaning
SaProt	LLR -8.04	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -1.2	GERP -4.3
Regional constraint	o/e 1.09	unconstrained · MANE · 418 kb · p 0.011 · regional, not allelic
Overall
CADD	5.247	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00198% Admixed American · 1/50,618 alleles

Overall 0.000129% 2/1,547,778 alleles · very rare exomes 2/1,395,668 · genomes 0/152,110 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00198%	50,618
African / African-American	0.00136%	73,604

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: TRDN
Protein: p.Glu481Asp
Coding: c.1443G>C
MANE Select: NM_006073
dbSNP: rs2114727152
Type: single nucleotide variant
Location: chr6:123331907 (GRCh38)
Gene constraint: LOEUF 1.359 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 47.65
Residue 481: the 'disordered' region

Full TRDN gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

catecholaminergic polymorphic ventricular tachycardia 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Inherited isolated arrhythmogenic cardiomyopathy (Orphanet):

Inheritance: Autosomal dominant
Onset: No data available

Similar variants

TRDN c.22+1G>T Pathogenic ★★ same condition
TRDN c.22+29A>G Pathogenic ★★ same condition
TRDN c.391+1G>A Likely pathogenic ★★ same condition
TRDN p.Gln205Ter Pathogenic/Likely pathogenic ★★ same condition
TRDN p.Glu168Ter Pathogenic/Likely pathogenic ★★ same condition
TRDN p.Glu181Ter Pathogenic/Likely pathogenic ★★ same condition
TRDN p.Lys177Ter Pathogenic ★★ same condition
TRDN p.Met1Thr 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/trdn-p-glu481asp (accessed [today's date]).

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