Is ECEL1 p.Arg447His (c.1340G>A) pathogenic?

ECEL1 p.Arg447His (c.1340G>A) is classified Uncertain significance in ECEL1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-09-09). AlphaMissense: likely benign (0.1734); Very rare (popmax 0.00856%, nfe); Associated with Inborn genetic diseases.

What condition is associated with ECEL1 p.Arg447His (c.1340G>A)?

ECEL1 p.Arg447His (c.1340G>A) is associated with Inborn genetic diseases (ClinVar).

How common is ECEL1 p.Arg447His (c.1340G>A) in the general population?

ECEL1 p.Arg447His (c.1340G>A) is very rare (popmax 0.00856%, nfe) (gnomAD).

What do computational predictors say about ECEL1 p.Arg447His (c.1340G>A)?

AlphaMissense predicts likely benign (score 0.1734) — an in-silico prediction, not a clinical call.

ECEL1 p.Arg447His

c.1340G>A · VCV4246340

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1734 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00856%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.1734	likely benign
REVEL	0.243	benign-leaning
SaProt	LLR -3.01	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.9	GERP 1.6, phastCons 1
Regional constraint	o/e 0.96	unconstrained · MANE · 6,497 bp · p 0.15 · regional, not allelic
Overall
CADD	30.0	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 0.00856% European (non-Finnish) · 101/1,179,220 alleles

Filtering AF 0.00716% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00668%

Overall 0.00688% 111/1,612,834 alleles · very rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.00856%	11,675
African / African-American	0.004%	24,981
Admixed American	0.00333%	29,997
South Asian	0.00329%	30,354
Remaining individualsnot grpmax-eligible	0.0032%	31,220

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: ECEL1
Protein: p.Arg447His
Coding: c.1340G>A
MANE Select: NM_004826
Type: single nucleotide variant
Location: chr2:232484068 (GRCh38)
Gene constraint: LOEUF 1.099 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 88.62
Residue 447: a disulfide bond; the peptidase m13 domain

Full ECEL1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

ECEL1 p.Arg756Trp Uncertain significance ★★ ⚠ same condition
ECEL1 p.Gly209Val Uncertain significance ★★ ⚠ same condition
ECEL1 p.Pro34Ser Uncertain significance ★★ ⚠ same condition
ECEL1 p.Ser44Arg Uncertain significance ★★ ⚠ same condition
ECEL1 p.Arg355Gln Likely benign ★★ same condition
ECEL1 c.1990-6C>T Conflicting classifications of pathogenicity ★ same condition
ECEL1 p.Ala109Val Uncertain significance ★ ⚠ same condition
ECEL1 p.Ala175Thr Uncertain significance ★ ⚠ 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/ecel1-p-arg447his (accessed [today's date]).

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