Is ECEL1 p.Arg645Gln (c.1934G>A) pathogenic?

ECEL1 p.Arg645Gln (c.1934G>A) is classified Uncertain significance in ECEL1 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-11-07). AlphaMissense: likely benign (0.0591); Very rare (popmax 0.00833%, amr); Associated with Inborn genetic diseases.

What condition is associated with ECEL1 p.Arg645Gln (c.1934G>A)?

ECEL1 p.Arg645Gln (c.1934G>A) is associated with Inborn genetic diseases (ClinVar).

How common is ECEL1 p.Arg645Gln (c.1934G>A) in the general population?

ECEL1 p.Arg645Gln (c.1934G>A) is very rare (popmax 0.00833%, amr) (gnomAD).

What do computational predictors say about ECEL1 p.Arg645Gln (c.1934G>A)?

AlphaMissense predicts likely benign (score 0.0591) — an in-silico prediction, not a clinical call.

ECEL1 p.Arg645Gln

c.1934G>A · VCV3506444

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0591 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00833%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.0591	likely benign
REVEL	0.139	moderately benign-leaning
SaProt	LLR -5.17	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 -0.34	GERP 3.6, phastCons 0.015
Regional constraint	o/e 0.96	unconstrained · MANE · 6,497 bp · p 0.15 · regional, not allelic
Overall
CADD	18.64	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 0.00833% Admixed American · 5/59,996 alleles

Filtering AF 0.00443% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00403%

Overall 0.00452% 73/1,613,728 alleles · very rare exomes 67/1,461,494 · genomes 6/152,234 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00833%	11,999
European (non-Finnish)	0.00551%	18,154
South Asian	0.00329%	30,357

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.Arg645Gln
Coding: c.1934G>A
MANE Select: NM_004826
Type: single nucleotide variant
Location: chr2:232481561 (GRCh38)
Gene constraint: LOEUF 1.099 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 88.62
Residue 645: 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.Arg645Ter Likely pathogenic ★ same residue
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

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-arg645gln (accessed [today's date]).

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