Is EPB41 p.Tyr331Ter (c.993C>A) pathogenic?

EPB41 p.Tyr331Ter (c.993C>A) is classified Pathogenic/Likely pathogenic in EPB41 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-01-14). Very rare (popmax 0.00446%, eas); Associated with elliptocytosis 1.

What condition is associated with EPB41 p.Tyr331Ter (c.993C>A)?

EPB41 p.Tyr331Ter (c.993C>A) is associated with elliptocytosis 1 (ClinVar).

How common is EPB41 p.Tyr331Ter (c.993C>A) in the general population?

EPB41 p.Tyr331Ter (c.993C>A) is very rare (popmax 0.00446%, eas) (gnomAD).

How is Hereditary elliptocytosis inherited?

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

EPB41 p.Tyr331Ter

c.993C>A · VCV3729024

Pathogenic/Likely pathogenic Multiple submitters

Classification

Pathogenic/Likely pathogenic

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

Consequence

nonsense (stop-gain)

predicted LoF

gnomAD v4.1

Rare

very rare (popmax 0.00446%, eas)

Conditions

elliptocytosis 1

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	nonsense (stop-gain)	predicted loss-of-function
NMD	predicted	premature termination codon in exon 7 of 21
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -8.8	GERP -5.5
Overall
CADD	28.5	PHRED · no single calibrated threshold — expert panels disagree

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00446% East Asian · 2/44,890 alleles

Filtering AF 0.000739% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000276%

Overall 0.000137% 2/1,461,884 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: EPB41
Protein: p.Tyr331Ter
Coding: c.993C>A
MANE Select: NM_001376013
Type: single nucleotide variant
Location: chr1:29018311 (GRCh38)
Gene constraint: LOEUF 0.738 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 63.72 · 3 PDB
Residue 331: the ferm domain; an α-helix

Full EPB41 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

elliptocytosis 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Hereditary elliptocytosis (Orphanet):

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

Similar variants

EPB41 p.Arg471Ter Pathogenic/Likely pathogenic ★★ same condition
EPB41 p.Arg554Ter Pathogenic/Likely pathogenic ★★ same condition
EPB41 p.Arg715Ter Pathogenic ★★ same condition
EPB41 p.Gln274Ter Pathogenic ★★ same condition
EPB41 p.Ala259Val Uncertain significance ★★ ⚠ same condition
EPB41 p.Ala502Val Uncertain significance ★★ ⚠ same condition
EPB41 p.Ala535Val Uncertain significance ★★ ⚠ same condition
EPB41 p.Ala683Pro 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/epb41-p-tyr331ter (accessed [today's date]).

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