Is EPHB4 p.Ser448= (c.1344C>T) pathogenic?

EPHB4 p.Ser448= (c.1344C>T) is classified Likely benign in EPHB4 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2024-11-11). Very rare (popmax 0.00267%, afr); Associated with Cardiovascular phenotype.

What condition is associated with EPHB4 p.Ser448= (c.1344C>T)?

EPHB4 p.Ser448= (c.1344C>T) is associated with Cardiovascular phenotype (ClinVar).

How common is EPHB4 p.Ser448= (c.1344C>T) in the general population?

EPHB4 p.Ser448= (c.1344C>T) is very rare (popmax 0.00267%, afr) (gnomAD).

EPHB4 p.Ser448=

c.1344C>T · rs778776343 · VCV1770423

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00267%, afr)

Conditions

Cardiovascular phenotype

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP 7.6	GERP -1.2, phastCons 1
Overall
CADD	13.01	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00267% African / African-American · 2/74,946 alleles

Filtering AF 0.00103% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00083%

Overall 0.00136% 22/1,613,244 alleles · very rare exomes 17/1,461,024 · genomes 5/152,220 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00267%	37,473
European (non-Finnish)	0.00161%	62,106
Remaining individualsnot grpmax-eligible	0.0016%	62,480

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: EPHB4
Protein: p.Ser448=
Coding: c.1344C>T
MANE Select: NM_004444
dbSNP: rs778776343
Type: single nucleotide variant
Location: chr7:100818598 (GRCh38)
Gene constraint: LOEUF 0.645 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 82.46 · 23 PDB
Residue 448: a UniProt-annotated variant site (in cmavm2); the fibronectin type-iii 2 domain

Full EPHB4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Cardiovascular phenotype — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

EPHB4 p.Ser448Arg Uncertain significance ★ ⚠ same residue
EPHB4 c.1870+5G>C Uncertain significance ★★ same condition
EPHB4 p.Ala262Val Uncertain significance ★★ ⚠ same condition
EPHB4 p.Ala345Gly Uncertain significance ★★ ⚠ same condition
EPHB4 p.Ala931Thr Uncertain significance ★★ ⚠ same condition
EPHB4 p.Arg148Trp Uncertain significance ★★ ⚠ same condition
EPHB4 p.Arg310Gln Uncertain significance ★★ ⚠ same condition
EPHB4 p.Arg483Gln 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/ephb4-p-ser448 (accessed [today's date]).

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