Is EMD p.Arg46Trp (c.136C>T) pathogenic?

EMD p.Arg46Trp (c.136C>T) is classified Uncertain significance in EMD (ClinVar, Single submitter, 1 submitter; last evaluated 2021-08-31). AlphaMissense: likely benign (0.2002); Absent from gnomAD v4.1; Associated with X-linked Emery-Dreifuss muscular dystrophy.

What condition is associated with EMD p.Arg46Trp (c.136C>T)?

EMD p.Arg46Trp (c.136C>T) is associated with X-linked Emery-Dreifuss muscular dystrophy (ClinVar).

How common is EMD p.Arg46Trp (c.136C>T) in the general population?

EMD p.Arg46Trp (c.136C>T) is absent from gnomAD v4.1 (gnomAD).

How is Emery-Dreifuss muscular dystrophy inherited?

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

What do computational predictors say about EMD p.Arg46Trp (c.136C>T)?

AlphaMissense predicts likely benign (score 0.2002) — an in-silico prediction, not a clinical call.

EMD p.Arg46Trp

c.136C>T · rs2067875291 · VCV864177

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.2002 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

X-linked Emery-Dreifuss muscular dystrophy

Computational evidence

Protein change
AlphaMissense	0.2002	likely benign
REVEL	0.125	moderately benign-leaning
SaProt	LLR -11.88	damaging
⇒ SaProt calls this damaging; AlphaMissense and REVEL do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.7	GERP 1.2, phastCons 1
Regional constraint	o/e 1.05	unconstrained · MANE · 1,709 bp · p 0.47 · regional, not allelic
Overall
CADD	24.1	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: EMD
Protein: p.Arg46Trp
Coding: c.136C>T
MANE Select: NM_000117
dbSNP: rs2067875291
Type: single nucleotide variant
Location: chrX:154379743 (GRCh38)
Structure: AlphaFold pLDDT 61.26 · 6 PDB
Residue 46: the 'interaction with f-actin' region

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

Disease context

X-linked Emery-Dreifuss muscular dystrophy — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Emery-Dreifuss muscular dystrophy (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive, X-linked recessive
Onset: Childhood
Prevalence: 1-9 / 1 000 000 (Europe)

Similar variants

EMD p.Arg46Gln Uncertain significance ★ ⚠ same residue
EMD p.Arg46= Likely benign ★ same residue
EMD p.Arg46fs Pathogenic/Likely pathogenic ★★ same residue
EMD c.187+1G>A Pathogenic ★★ same condition
EMD c.187+1G>T Pathogenic/Likely pathogenic ★★ same condition
EMD c.265+1G>A Likely pathogenic ★★ same condition
EMD c.266-2A>G Pathogenic ★★ same condition
EMD c.266-3A>G 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/emd-p-arg46trp (accessed [today's date]).

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