Is CAVIN4 p.Ile259Val (c.775A>G) pathogenic?

CAVIN4 p.Ile259Val (c.775A>G) is classified Uncertain significance in CAVIN4 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-12-13). AlphaMissense: likely benign (0.1527); Very rare (popmax 0.00272%, afr).

How common is CAVIN4 p.Ile259Val (c.775A>G) in the general population?

CAVIN4 p.Ile259Val (c.775A>G) is very rare (popmax 0.00272%, afr) (gnomAD).

What do computational predictors say about CAVIN4 p.Ile259Val (c.775A>G)?

AlphaMissense predicts likely benign (score 0.1527) — an in-silico prediction, not a clinical call.

CAVIN4 p.Ile259Val

c.775A>G · rs765728679 · VCV3137919

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1527 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00272%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1527	likely benign
REVEL	0.225	benign-leaning
SaProt	LLR -6.59	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.3	GERP 2.2, phastCons 1
Regional constraint	o/e 1.04	unconstrained · MANE · 8,304 bp · p 0.38 · regional, not allelic
Overall
CADD	23.1	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00272% African / African-American · 2/73,520 alleles

Filtering AF 0.000963% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000795%

Overall 0.00132% 21/1,586,914 alleles · very rare exomes 20/1,434,754 · genomes 1/152,160 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00272%	36,760
Admixed American	0.00179%	55,942
European (non-Finnish)	0.00154%	64,871

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: CAVIN4
Protein: p.Ile259Val
Coding: c.775A>G
MANE Select: NM_001018116
dbSNP: rs765728679
Type: single nucleotide variant
Location: chr9:100586131 (GRCh38)
Gene constraint: LOEUF 0.875 · pLI 0.02 (gnomAD)
Structure: AlphaFold pLDDT 66.21
Residue 259: the 'disordered' region

Full CAVIN4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CAVIN4 p.Ile259Leu Uncertain significance ★ ⚠ same residue
CAVIN4 p.Arg17Cys Uncertain significance ★★ ⚠ same type
CAVIN4 p.Arg272Cys Uncertain significance ★★ ⚠ same type
CAVIN4 p.Asn128Lys Uncertain significance ★★ ⚠ same type
CAVIN4 p.Pro142Leu Uncertain significance ★★ ⚠ same type
CAVIN4 p.Ser20Thr Uncertain significance ★★ ⚠ same type
CAVIN4 c.408+28T>C Likely benign ★★ same type
CAVIN4 c.408+42T>C Benign ★★ same type

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/cavin4-p-ile259val (accessed [today's date]).

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