Is TXNRD2 p.Arg418= (c.1254C>T) pathogenic?

TXNRD2 p.Arg418= (c.1254C>T) is classified Likely benign in TXNRD2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-04-30). Very rare (popmax 0.00167%, amr); Associated with dilated cardiomyopathy.

What condition is associated with TXNRD2 p.Arg418= (c.1254C>T)?

TXNRD2 p.Arg418= (c.1254C>T) is associated with dilated cardiomyopathy (ClinVar).

How common is TXNRD2 p.Arg418= (c.1254C>T) in the general population?

TXNRD2 p.Arg418= (c.1254C>T) is very rare (popmax 0.00167%, amr) (gnomAD).

TXNRD2 p.Arg418=

c.1254C>T · rs1188379074 · VCV1647038

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00167%, amr)

Conditions

dilated cardiomyopathy

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 1.8	GERP 0.58, phastCons 1
Overall
CADD	8.872	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00167% Admixed American · 1/60,022 alleles

Filtering AF 6.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.9e-05%

Overall 0.00031% 5/1,613,396 alleles · very rare exomes 5/1,461,074 · genomes 0/152,322 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00167%	60,022
African / African-American	0.00133%	75,052
European (non-Finnish)	0.000254%	393,331

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: TXNRD2
Protein: p.Arg418=
Coding: c.1254C>T
MANE Select: NM_006440
dbSNP: rs1188379074
Type: single nucleotide variant
Location: chr22:19880200 (GRCh38)
Gene constraint: LOEUF 1.18 · pLI <0.01 (gnomAD)

Full TXNRD2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

dilated cardiomyopathy — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

TXNRD2 p.Arg418His Uncertain significance ★★ same residue
TXNRD2 p.Arg418Cys Uncertain significance ★ same residue
TXNRD2 c.104-1G>A Uncertain significance ★★ same condition
TXNRD2 c.104-3C>G Uncertain significance ★★ same condition
TXNRD2 c.1086+4C>T Uncertain significance ★★ same condition
TXNRD2 c.1087-2A>G Uncertain significance ★★ same condition
TXNRD2 c.1348-2A>G Uncertain significance ★★ same condition
TXNRD2 c.1348-9G>A Uncertain significance ★★ 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/txnrd2-p-arg418 (accessed [today's date]).

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