Is APOB p.Val1350= (c.4050G>C) pathogenic?

APOB p.Val1350= (c.4050G>C) is classified Likely benign in APOB (ClinVar, Multiple submitters, 2 submitters; last evaluated 2024-05-29). Ultra-rare (popmax 0.016%, afr); Associated with Cardiovascular phenotype.

What condition is associated with APOB p.Val1350= (c.4050G>C)?

APOB p.Val1350= (c.4050G>C) is associated with Cardiovascular phenotype, hypercholesterolemia, autosomal dominant, type B, familial hypobetalipoproteinemia 1 (ClinVar).

How common is APOB p.Val1350= (c.4050G>C) in the general population?

APOB p.Val1350= (c.4050G>C) is ultra-rare (popmax 0.016%, afr) (gnomAD).

APOB p.Val1350=

c.4050G>C · rs145869062 · VCV715298

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.016%, 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	all four deltas below 0.2 · C>A here scores Δ0.28 · evaluated, not missing
Constraint at this position
Conservation	phyloP -0.63	GERP -1.3, phastCons 0.015
Overall
CADD	7.787	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.016% African / African-American · 12/74,918 alleles

Filtering AF 0.00921% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00722%

Overall 0.000805% 13/1,614,084 alleles · ultra-rare exomes 3/1,461,890 · genomes 10/152,194 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.016%	6,243
Remaining individualsnot grpmax-eligible	0.0016%	62,486

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: APOB
Protein: p.Val1350=
Coding: c.4050G>C
MANE Select: NM_000384
dbSNP: rs145869062
Type: single nucleotide variant
Location: chr2:21013326 (GRCh38)
Gene constraint: LOEUF 0.537 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)

Full APOB 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

Also linked: hypercholesterolemia, autosomal dominant, type B familial hypobetalipoproteinemia 1

Similar variants

APOB p.Val1350Met Uncertain significance ★★ ⚠ same residue
APOB p.Val1350Ala Uncertain significance ★ ⚠ same residue
APOB c.1830-1G>A Pathogenic ★★ same condition
APOB c.2604+1G>A Likely pathogenic ★★ same condition
APOB c.537+1G>T Pathogenic/Likely pathogenic ★★ same condition
APOB p.Arg1333Ter Pathogenic ★★ same condition
APOB p.Arg2012Ter Pathogenic ★★ same condition
APOB p.Arg2085Ter Pathogenic/Likely pathogenic ★★ 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/apob-p-val1350 (accessed [today's date]).

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