Is EPS8 p.Pro221Leu (c.662C>T) pathogenic?

EPS8 p.Pro221Leu (c.662C>T) is classified Uncertain significance in EPS8 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-12-16). AlphaMissense: ambiguous (0.4617); Very rare (popmax 0.00167%, amr); Associated with Inborn genetic diseases.

What condition is associated with EPS8 p.Pro221Leu (c.662C>T)?

EPS8 p.Pro221Leu (c.662C>T) is associated with Inborn genetic diseases (ClinVar).

How common is EPS8 p.Pro221Leu (c.662C>T) in the general population?

EPS8 p.Pro221Leu (c.662C>T) is very rare (popmax 0.00167%, amr) (gnomAD).

What do computational predictors say about EPS8 p.Pro221Leu (c.662C>T)?

AlphaMissense predicts ambiguous (score 0.4617) — an in-silico prediction, not a clinical call.

EPS8 p.Pro221Leu

c.662C>T · rs771406432 · VCV2336308

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.4617 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00167%, amr)

Missense predictors

0/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.4617	ambiguous
REVEL	0.248	benign-leaning
SaProt	LLR -8.16	tolerated
⇒ REVEL and SaProt both call this tolerated; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 9.9	GERP 2.5, phastCons 1
Regional constraint	o/e 0.96	unconstrained · MANE · 62 kb · p 0.26 · regional, not allelic
Overall
CADD	23.2	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 0.00167% Admixed American · 1/59,964 alleles

Overall 6.84e-05% 1/1,461,610 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: EPS8
Protein: p.Pro221Leu
Coding: c.662C>T
MANE Select: NM_004447
dbSNP: rs771406432
Type: single nucleotide variant
Location: chr12:15665830 (GRCh38)
Gene constraint: LOEUF 0.443 · pLI 1.00 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 70.77 · 2 PDB
Residue 221: the 'disordered' region

Full EPS8 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

EPS8 p.Ala150Val Uncertain significance ★★ ⚠ same condition
EPS8 p.Ala416Asp Uncertain significance ★★ ⚠ same condition
EPS8 p.Arg195Trp Uncertain significance ★★ ⚠ same condition
EPS8 p.Arg403Trp Uncertain significance ★★ ⚠ same condition
EPS8 p.Arg432Gln Uncertain significance ★★ ⚠ same condition
EPS8 p.Arg434Cys Uncertain significance ★★ ⚠ same condition
EPS8 p.Arg597Cys Uncertain significance ★★ ⚠ same condition
EPS8 p.Arg597Ser 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/eps8-p-pro221leu (accessed [today's date]).

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