Is ESPN p.Pro442Ala (c.1324C>G) pathogenic?

ESPN p.Pro442Ala (c.1324C>G) is classified Uncertain significance in ESPN (ClinVar, Single submitter, 1 submitter; last evaluated 2024-09-03). AlphaMissense: likely benign (0.0903); Absent from gnomAD v4.1; Associated with Inborn genetic diseases.

What condition is associated with ESPN p.Pro442Ala (c.1324C>G)?

ESPN p.Pro442Ala (c.1324C>G) is associated with Inborn genetic diseases (ClinVar).

How common is ESPN p.Pro442Ala (c.1324C>G) in the general population?

ESPN p.Pro442Ala (c.1324C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about ESPN p.Pro442Ala (c.1324C>G)?

AlphaMissense predicts likely benign (score 0.0903) — an in-silico prediction, not a clinical call.

ESPN p.Pro442Ala

c.1324C>G · VCV3510364

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0903 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.0903	likely benign
REVEL	0.268	benign-leaning
SaProt	LLR -9.08	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 2.3	GERP 1.3, phastCons 0.41
Regional constraint	o/e 0.58	unconstrained · MANE · 3,146 bp · p 3.4e-10 · regional, not allelic
Overall
CADD	18.72	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

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: ESPN
Protein: p.Pro442Ala
Coding: c.1324C>G
MANE Select: NM_031475
Type: single nucleotide variant
Location: chr1:6445795 (GRCh38)
Gene constraint: LOEUF 1.307 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 68.76
Residue 442: the 'disordered' region

Full ESPN 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

ESPN p.Pro442Leu Uncertain significance ★★ ⚠ same residue
ESPN p.Ala139Thr Uncertain significance ★★ ⚠ same condition
ESPN p.Ala23Thr Uncertain significance ★★ ⚠ same condition
ESPN p.Ala484Thr Uncertain significance ★★ ⚠ same condition
ESPN p.Ala729Glu Uncertain significance ★★ ⚠ same condition
ESPN p.Arg113His Uncertain significance ★★ ⚠ same condition
ESPN p.Arg335Cys Uncertain significance ★★ ⚠ same condition
ESPN p.Arg339Gln 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/espn-p-pro442ala (accessed [today's date]).

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