Is ESPN p.His317Arg (c.950A>G) pathogenic?

ESPN p.His317Arg (c.950A>G) is classified Uncertain significance in ESPN (ClinVar, Multiple submitters, 4 submitters; last evaluated 2025-09-01). AlphaMissense: likely pathogenic (0.6574); Very rare (popmax 0.00755%, nfe); Associated with Inborn genetic diseases.

What condition is associated with ESPN p.His317Arg (c.950A>G)?

ESPN p.His317Arg (c.950A>G) is associated with Inborn genetic diseases (ClinVar).

How common is ESPN p.His317Arg (c.950A>G) in the general population?

ESPN p.His317Arg (c.950A>G) is very rare (popmax 0.00755%, nfe) (gnomAD).

What do computational predictors say about ESPN p.His317Arg (c.950A>G)?

AlphaMissense predicts likely pathogenic (score 0.6574) — an in-silico prediction, not a clinical call.

ESPN p.His317Arg

c.950A>G · rs746845549 · VCV1313446

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 4 submitters

AlphaMissense

likely pathogenic

0.6574 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00755%, nfe)

Missense predictors

2/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.6574	likely pathogenic
REVEL	0.326	indeterminate
SaProt	LLR -10.75	damaging
⇒ AlphaMissense and SaProt both call this damaging; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 11	GERP 1.7, phastCons 1
Regional constraint	o/e 0.88	unconstrained · MANE · 21 kb · p 0.002 · regional, not allelic
Overall
CADD	25.0	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — 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 0.00755% European (non-Finnish) · 89/1,179,484 alleles

Filtering AF 0.00623% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00579%

Overall 0.00633% 102/1,610,456 alleles · very rare

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.0145%	6,914
European (non-Finnish)grpmax	0.00755%	13,253
Finnishnot grpmax-eligible	0.00321%	31,163
Admixed American	0.00167%	59,858
African / African-American	0.00134%	74,890

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: ESPN
Protein: p.His317Arg
Coding: c.950A>G
MANE Select: NM_031475
dbSNP: rs746845549
Type: single nucleotide variant
Location: chr1:6441025 (GRCh38)
Gene constraint: LOEUF 1.307 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 68.76

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.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
ESPN p.Arg478Cys 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-his317arg (accessed [today's date]).

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