Is ENG p.Pro528Arg (c.1583C>G) pathogenic?

ENG p.Pro528Arg (c.1583C>G) is classified Conflicting classifications of pathogenicity in ENG (ClinVar, Conflicting submitters, 2 submitters; last evaluated 2026-03-03). AlphaMissense: likely benign (0.1806); Very rare (popmax 8.47e-05%, nfe); Associated with hereditary hemorrhagic telangiectasia.

What condition is associated with ENG p.Pro528Arg (c.1583C>G)?

ENG p.Pro528Arg (c.1583C>G) is associated with hereditary hemorrhagic telangiectasia (ClinVar).

How common is ENG p.Pro528Arg (c.1583C>G) in the general population?

ENG p.Pro528Arg (c.1583C>G) is very rare (popmax 8.47e-05%, nfe) (gnomAD).

How is Hereditary hemorrhagic telangiectasia inherited?

Typically Autosomal dominant (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about ENG p.Pro528Arg (c.1583C>G)?

AlphaMissense predicts likely benign (score 0.1806) — an in-silico prediction, not a clinical call.

ENG p.Pro528Arg

c.1583C>G · rs779916731 · VCV3018451

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.1806 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 8.47e-05%, nfe)

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

hereditary hemorrhagic telangiectasia

Computational evidence

Protein change
AlphaMissense	0.1806	likely benign
REVEL	0.312	indeterminate
SaProt	LLR -12.99	damaging
⇒ SaProt calls this damaging; AlphaMissense does not; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.23	GERP -3.2
Regional constraint	o/e 0.86	unconstrained · MANE · 39 kb · p 5.2e-05 · regional, not allelic
Overall
CADD	3.955	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 8.47e-05% European (non-Finnish) · 1/1,180,022 alleles

Overall 0.000137% 2/1,461,870 alleles · very rare

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.0016%	62,506
European (non-Finnish)grpmax	8.47e-05%	1,180,022

Remaining individuals shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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.Pro528Arg
Coding: c.1583C>G
MANE Select: NM_001114753
dbSNP: rs779916731
Type: single nucleotide variant
Location: chr9:127818223 (GRCh38)
Gene constraint: LOEUF 0.374 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 80.84 · 3 PDB
Residue 528: a disulfide bond; the zp domain

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

Disease context

hereditary hemorrhagic telangiectasia — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Hereditary hemorrhagic telangiectasia (Orphanet):

Inheritance: Autosomal dominant
Onset: All ages
Prevalence: 1-5 / 10 000 (Europe)

Similar variants

ENG p.Pro528= Likely benign ★★ same residue
ENG p.Pro528Leu Conflicting classifications of pathogenicity ★ ⚠ same residue
ENG p.Pro528fs Pathogenic ★★ same residue
ENG p.Pro528Ser Uncertain significance ★ ⚠ same residue
ENG p.Arg529His Pathogenic ★★★ same condition
ENG p.Asn423Ser Likely pathogenic ★★★ ⚠ same condition
ENG p.Cys382Tyr Pathogenic ★★★ same condition
ENG p.Cys549Gly 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/eng-p-pro528arg (accessed [today's date]).

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