Is EDA p.Ala34Val (c.101C>T) pathogenic?

EDA p.Ala34Val (c.101C>T) is classified Uncertain significance in EDA (ClinVar, Single submitter, 1 submitter; last evaluated 2025-07-30). AlphaMissense: likely benign (0.1069); Very rare (popmax 0.000223%, nfe); Associated with X-linked hypohidrotic ectodermal dysplasia.

What condition is associated with EDA p.Ala34Val (c.101C>T)?

EDA p.Ala34Val (c.101C>T) is associated with X-linked hypohidrotic ectodermal dysplasia (ClinVar).

How common is EDA p.Ala34Val (c.101C>T) in the general population?

EDA p.Ala34Val (c.101C>T) is very rare (popmax 0.000223%, nfe) (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 EDA p.Ala34Val (c.101C>T)?

AlphaMissense predicts likely benign (score 0.1069) — an in-silico prediction, not a clinical call.

EDA p.Ala34Val

c.101C>T · VCV4780559

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1069 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000223%, nfe)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

X-linked hypohidrotic ectodermal dysplasia

Computational evidence

Protein change
AlphaMissense	0.1069	likely benign
REVEL	0.312	indeterminate
SaProt	LLR -7.91	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3	GERP 1.5, phastCons 1
Regional constraint	o/e 1.27	unconstrained · MANE · 145 bp · p 0.075 · regional, not allelic
Overall
CADD	21.0	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000223% European (non-Finnish) · 2/894,884 alleles

Filtering AF 3.7e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.4e-05%

Overall 0.000183% 2/1,094,291 alleles · very rare

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: EDA
Protein: p.Ala34Val
Coding: c.101C>T
MANE Select: NM_001399
Type: single nucleotide variant
Location: chrX:69616409 (GRCh38)
Structure: AlphaFold pLDDT 70.59 · 3 PDB

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 p.Ala34fs Pathogenic ★ same residue
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

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-ala34val (accessed [today's date]).

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