Is APOE p.Arg233= (c.699C>T) pathogenic?

APOE p.Arg233= (c.699C>T) is classified Likely benign in APOE (ClinVar, Single submitter, 1 submitter; last evaluated 2020-06-17). Very rare (popmax 0.00663%, nfe); Associated with Cardiovascular phenotype.

What condition is associated with APOE p.Arg233= (c.699C>T)?

APOE p.Arg233= (c.699C>T) is associated with Cardiovascular phenotype (ClinVar).

How common is APOE p.Arg233= (c.699C>T) in the general population?

APOE p.Arg233= (c.699C>T) is very rare (popmax 0.00663%, nfe) (gnomAD).

APOE p.Arg233=

c.699C>T · rs1354007902 · VCV1756513

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00663%, nfe)

Conditions

Cardiovascular phenotype

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -1.2	GERP 0.63, phastCons 0.001
Overall
CADD	9.398	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00663% European (non-Finnish) · 76/1,145,888 alleles

Filtering AF 0.00543% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00496%

Overall 0.00528% 81/1,533,730 alleles · very rare exomes 78/1,381,686 · genomes 3/152,044 · joint denominator

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.00663%	15,077
African / African-American	0.00549%	18,230
Remaining individualsnot grpmax-eligible	0.00167%	59,762

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: APOE
Protein: p.Arg233=
Coding: c.699C>T
MANE Select: NM_000041
dbSNP: rs1354007902
Type: single nucleotide variant
Location: chr19:44908995 (GRCh38)
Gene constraint: LOEUF 1.319 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 76.13 · 31 PDB
Residue 233: the '8 x 22 aa approximate tandem repeats' region; the 'lipid-binding and lipoprotein association' region; a binding site; a UniProt-annotated variant site (in hlpp3; apoe3 washington); an α-helix

Full APOE 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

APOE p.Arg43Cys Pathogenic/Likely pathogenic ★★ ⚠ same condition
APOE p.Arg246Pro Uncertain significance ★★ same condition
APOE p.Arg56His Uncertain significance ★★ ⚠ same condition
APOE p.Gln119Pro Uncertain significance ★★ same condition
APOE p.Gln181His Uncertain significance ★★ ⚠ same condition
APOE p.Ser112Tyr Uncertain significance ★★ ⚠ same condition
APOE p.Trp294Cys Uncertain significance ★★ ⚠ same condition
APOE p.Val213Gly 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/apoe-p-arg233 (accessed [today's date]).

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