Is ECT2 p.Gln450Pro (c.1349A>C) pathogenic?

ECT2 p.Gln450Pro (c.1349A>C) is classified Uncertain significance in ECT2 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-10-26). AlphaMissense: likely benign (0.0662); Very rare (popmax 8.48e-05%, nfe).

How common is ECT2 p.Gln450Pro (c.1349A>C) in the general population?

ECT2 p.Gln450Pro (c.1349A>C) is very rare (popmax 8.48e-05%, nfe) (gnomAD).

What do computational predictors say about ECT2 p.Gln450Pro (c.1349A>C)?

AlphaMissense predicts likely benign (score 0.0662) — an in-silico prediction, not a clinical call.

ECT2 p.Gln450Pro

c.1349A>C · rs1720105815 · VCV2257101

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0662 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 8.48e-05%, nfe)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.0662	likely benign
REVEL	0.59	indeterminate
SaProt	LLR -5.74	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 11	GERP 1.6, phastCons 1
Regional constraint	o/e 0.87	unconstrained · MANE · 66 kb · p 1.6e-05 · regional, not allelic
Overall
CADD	22.5	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 8.48e-05% European (non-Finnish) · 1/1,179,682 alleles

Overall 6.84e-05% 1/1,461,334 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: ECT2
Protein: p.Gln450Pro
Coding: c.1349A>C
MANE Select: NM_001258315
dbSNP: rs1720105815
Type: single nucleotide variant
Location: chr3:172769064 (GRCh38)
Gene constraint: LOEUF 0.664 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 71.17 · 3 PDB

Full ECT2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ECT2 p.His912Arg Uncertain significance ★★ ⚠ same type
ECT2 p.Pro236Ala Uncertain significance ★★ ⚠ same type
ECT2 p.Pro481= Benign ★★ same type
ECT2 c.1069-2A>G Uncertain significance ★ same type
ECT2 p.Ala258Thr Uncertain significance ★ ⚠ same type
ECT2 p.Ala850Thr Uncertain significance ★ ⚠ same type
ECT2 p.Arg169Cys Uncertain significance ★ ⚠ same type
ECT2 p.Arg194Met Uncertain significance ★ ⚠ same type

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/ect2-p-gln450pro (accessed [today's date]).

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