Is ENG p.Pro318Arg (c.953C>G) pathogenic?

ENG p.Pro318Arg (c.953C>G) is classified Uncertain significance in ENG (ClinVar, Multiple submitters, 2 submitters; last evaluated 2026-03-31). AlphaMissense: ambiguous (0.4367); Very rare (popmax 8.54e-05%, nfe); Associated with Cardiovascular phenotype.

What condition is associated with ENG p.Pro318Arg (c.953C>G)?

ENG p.Pro318Arg (c.953C>G) is associated with Cardiovascular phenotype, hereditary hemorrhagic telangiectasia (ClinVar).

How common is ENG p.Pro318Arg (c.953C>G) in the general population?

ENG p.Pro318Arg (c.953C>G) is very rare (popmax 8.54e-05%, nfe) (gnomAD).

What do computational predictors say about ENG p.Pro318Arg (c.953C>G)?

AlphaMissense predicts ambiguous (score 0.4367) — an in-silico prediction, not a clinical call.

ENG p.Pro318Arg

c.953C>G · rs1830567408 · VCV1044426

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

ambiguous

0.4367 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 8.54e-05%, nfe)

Missense predictors

2/2 damaging

REVEL, SaProt · AlphaMissense indeterminate

Conditions

Cardiovascular phenotype

Computational evidence

Protein change
AlphaMissense	0.4367	ambiguous
REVEL	0.663	pathogenic-leaning
SaProt	LLR -10.12	damaging
⇒ REVEL and SaProt both call this damaging; AlphaMissense is indeterminate.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 1.6, phastCons 1
Regional constraint	o/e 0.86	unconstrained · MANE · 39 kb · p 5.2e-05 · regional, not allelic
Overall
CADD	24.9	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 8.54e-05% European (non-Finnish) · 1/1,171,310 alleles

Overall 6.26e-05% 1/1,596,242 alleles · very rare exomes 1/1,444,078 · genomes 0/152,164 · joint denominator

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: ENG
Protein: p.Pro318Arg
Coding: c.953C>G
MANE Select: NM_001114753
dbSNP: rs1830567408
Type: single nucleotide variant
Location: chr9:127824838 (GRCh38)
Gene constraint: LOEUF 0.374 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 80.84 · 3 PDB
Residue 318: a β-strand; the 'required for interaction with gdf2' region; the 'or1, c-terminal part' region

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

Disease context

Cardiovascular phenotype — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: hereditary hemorrhagic telangiectasia

Similar variants

ENG p.Pro318Ser Uncertain significance ★ ⚠ same residue
ENG p.Pro318Thr Uncertain significance ★ ⚠ same residue
ENG p.Pro318= Likely benign ★ same residue
ENG p.Pro318_Leu319del Uncertain significance ★ same residue
ENG p.Pro318Leu Uncertain significance ★★ same residue
ENG p.Arg529His Pathogenic ★★★ same condition
ENG p.Asn423Ser Likely pathogenic ★★★ ⚠ same condition
ENG p.Cys382Tyr 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/eng-p-pro318arg (accessed [today's date]).

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