Is EDAR p.Arg325Trp (c.973C>T) pathogenic?

EDAR p.Arg325Trp (c.973C>T) is classified Conflicting classifications of pathogenicity in EDAR (ClinVar, Conflicting submitters, 2 submitters; last evaluated 2024-07-04). AlphaMissense: likely pathogenic (0.8902); Very rare (popmax 0.000678%, nfe); Associated with ectodermal dysplasia 10A, hypohidrotic/hair/nail type, autosomal dominant.

How common is EDAR p.Arg325Trp (c.973C>T) in the general population?

EDAR p.Arg325Trp (c.973C>T) is very rare (popmax 0.000678%, nfe) (gnomAD).

What do computational predictors say about EDAR p.Arg325Trp (c.973C>T)?

AlphaMissense predicts likely pathogenic (score 0.8902) — an in-silico prediction, not a clinical call.

EDAR p.Arg325Trp

Q: What condition is associated with EDAR p.Arg325Trp (c.973C>T)?

EDAR p.Arg325Trp (c.973C>T) is associated with ectodermal dysplasia 10A, hypohidrotic/hair/nail type, autosomal dominant, autosomal recessive hypohidrotic ectodermal dysplasia (ClinVar).

c.973C>T · rs755654853 · VCV847026

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 2 submitters

AlphaMissense

likely pathogenic

0.8902 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000678%, nfe)

Missense predictors

2/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

ectodermal dysplasia 10A, hypohidrotic/hair/nail type, autosomal dominant

Computational evidence

Protein change
AlphaMissense	0.8902	likely pathogenic
REVEL	0.742	pathogenic-leaning
SaProt	LLR -8.15	tolerated
⇒ AlphaMissense and REVEL call this damaging; SaProt does not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.2	GERP 1.1, phastCons 1
Regional constraint	o/e 0.89	unconstrained · MANE · 34 kb · p 0.0061 · regional, not allelic
Overall
CADD	26.7	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

Grpmax group 0.000678% European (non-Finnish) · 8/1,180,004 alleles

Filtering AF 0.000292% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000211%

Overall 0.000991% 16/1,613,992 alleles · very rare

Ancestry group	Frequency	1 in
Finnishnot grpmax-eligible	0.0125%	8,003
European (non-Finnish)grpmax	0.000678%	147,500

Finnish shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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: EDAR
Protein: p.Arg325Trp
Coding: c.973C>T
MANE Select: NM_022336
dbSNP: rs755654853
Type: single nucleotide variant
Location: chr2:108906359 (GRCh38)
Gene constraint: LOEUF 0.927 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 67.01 · 1 PDB

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

Disease context

ectodermal dysplasia 10A, hypohidrotic/hair/nail type, autosomal dominant — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: autosomal recessive hypohidrotic ectodermal dysplasia

Similar variants

EDAR p.Arg325Pro Uncertain significance ★ same residue
EDAR p.Ala26Val Pathogenic/Likely pathogenic ★★ ⚠ same condition
EDAR p.Arg25Ter Pathogenic/Likely pathogenic ★★ same condition
EDAR p.Arg358Ter Pathogenic ★★ same condition
EDAR p.Arg420Gln Pathogenic/Likely pathogenic ★★ same condition
EDAR p.Arg89His Pathogenic/Likely pathogenic ★★ ⚠ same condition
EDAR p.Arg98Trp Pathogenic/Likely pathogenic ★★ same condition
EDAR p.Cys301Ter 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/edar-p-arg325trp (accessed [today's date]).

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