Is EDA p.Pro109= (c.327G>C) pathogenic?

EDA p.Pro109= (c.327G>C) is classified Likely benign in EDA (ClinVar, Single submitter, 1 submitter; last evaluated 2024-01-25). Absent from gnomAD v4.1; Associated with X-linked hypohidrotic ectodermal dysplasia.

What condition is associated with EDA p.Pro109= (c.327G>C)?

EDA p.Pro109= (c.327G>C) is associated with X-linked hypohidrotic ectodermal dysplasia (ClinVar).

How common is EDA p.Pro109= (c.327G>C) in the general population?

EDA p.Pro109= (c.327G>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.

EDA p.Pro109=

c.327G>C · rs1931961437 · VCV3007932

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

X-linked hypohidrotic ectodermal dysplasia

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 0.95	GERP -2, phastCons 1
Overall
CADD	7.287	PHRED · no single calibrated threshold — expert panels disagree

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: EDA
Protein: p.Pro109=
Coding: c.327G>C
MANE Select: NM_001399
dbSNP: rs1931961437
Type: single nucleotide variant
Location: chrX:69616635 (GRCh38)
Structure: AlphaFold pLDDT 70.59 · 3 PDB
Residue 109: the 'disordered' region

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

Disease context

X-linked hypohidrotic ectodermal dysplasia — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Hypohidrotic ectodermal dysplasia (Orphanet):

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

Similar variants

EDA c.526+5G>T Likely pathogenic ★★ same condition
EDA c.527-2A>G Pathogenic/Likely pathogenic ★★ same condition
EDA c.706+1G>A Pathogenic/Likely pathogenic ★★ same condition
EDA c.707-13T>G Pathogenic ★★ same condition
EDA c.742-2A>G Pathogenic/Likely pathogenic ★★ same condition
EDA c.924+1G>T Likely pathogenic ★★ same condition
EDA p.Ala349Ser Likely pathogenic ★★ same condition
EDA p.Ala349Thr 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/eda-p-pro109 (accessed [today's date]).

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