Is EDAR p.Cys428Arg (c.1282T>C) pathogenic?

EDAR p.Cys428Arg (c.1282T>C) is classified Pathogenic/Likely pathogenic in EDAR (ClinVar, Multiple submitters, 2 submitters; last evaluated 2023-10-24). AlphaMissense: likely pathogenic (0.9965); Absent from gnomAD v4.1; Associated with autosomal recessive hypohidrotic ectodermal dysplasia.

What condition is associated with EDAR p.Cys428Arg (c.1282T>C)?

EDAR p.Cys428Arg (c.1282T>C) is associated with autosomal recessive hypohidrotic ectodermal dysplasia, ectodermal dysplasia 10A, hypohidrotic/hair/nail type, autosomal dominant (ClinVar).

How common is EDAR p.Cys428Arg (c.1282T>C) in the general population?

EDAR p.Cys428Arg (c.1282T>C) is absent from gnomAD v4.1 (gnomAD).

How is Hypohidrotic ectodermal dysplasia inherited?

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

What do computational predictors say about EDAR p.Cys428Arg (c.1282T>C)?

AlphaMissense predicts likely pathogenic (score 0.9965) — an in-silico prediction, not a clinical call.

EDAR p.Cys428Arg

c.1282T>C · rs2470612697 · VCV1714868

Pathogenic/Likely pathogenic Multiple submitters

Classification

Pathogenic/Likely pathogenic

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely pathogenic

0.9965 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

autosomal recessive hypohidrotic ectodermal dysplasia

Computational evidence

Protein change
AlphaMissense	0.9965	likely pathogenic ✓ concordant with ClinVar · top 3% in EDAR
REVEL	0.783	moderately pathogenic-leaning
SaProt	LLR -10.02	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 11	GERP 1.8, phastCons 1
Regional constraint	o/e 0.89	unconstrained · MANE · 34 kb · p 0.0061 · regional, not allelic
Overall
CADD	28.4	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: EDAR
Protein: p.Cys428Arg
Coding: c.1282T>C
MANE Select: NM_022336
dbSNP: rs2470612697
Type: single nucleotide variant
Location: chr2:108896972 (GRCh38)
Gene constraint: LOEUF 0.927 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 67.01 · 1 PDB
Residue 428: the death domain

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

Disease context

autosomal recessive hypohidrotic ectodermal dysplasia — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

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

For Hypohidrotic ectodermal dysplasia (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive, X-linked recessive
Onset: Infancy, Neonatal
Prevalence: 1-9 / 100 000 (Europe)

Similar variants

EDAR p.Cys428Trp Conflicting classifications of pathogenicity ★ ⚠ same residue
EDAR p.Cys428Ter Likely pathogenic 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

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-cys428arg (accessed [today's date]).

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