Is ABCC4 p.Ile818Val (c.2452A>G) pathogenic?

ABCC4 p.Ile818Val (c.2452A>G) is classified Uncertain significance in ABCC4 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-05). AlphaMissense: likely benign (0.0585); Ultra-rare (popmax 0.0406%, eas).

How common is ABCC4 p.Ile818Val (c.2452A>G) in the general population?

ABCC4 p.Ile818Val (c.2452A>G) is ultra-rare (popmax 0.0406%, eas) (gnomAD).

What do computational predictors say about ABCC4 p.Ile818Val (c.2452A>G)?

AlphaMissense predicts likely benign (score 0.0585) — an in-silico prediction, not a clinical call.

ABCC4 p.Ile818Val

c.2452A>G · VCV4125738

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0585 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0406%, eas)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0585	likely benign
REVEL	0.261	benign-leaning
SaProt	LLR -6.04	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 -0.024	GERP -5.1, phastCons 0.001
Regional constraint	o/e 0.89	unconstrained · MANE · 185 kb · p 0.00034 · regional, not allelic
Overall
CADD	18.3	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 0.0406% East Asian · 18/44,352 alleles

Filtering AF 0.0262% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0216%

Overall 0.00145% 21/1,446,316 alleles · ultra-rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.0406%	2,464
Remaining individualsnot grpmax-eligible	0.00162%	61,774
European (non-Finnish)	0.00017%	587,910

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: ABCC4
Protein: p.Ile818Val
Coding: c.2452A>G
MANE Select: NM_005845
Type: single nucleotide variant
Location: chr13:95161192 (GRCh38)
Gene constraint: LOEUF 0.647 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 83.42 · 25 PDB
Residue 818: an α-helix; the abc transmembrane type-1 2 domain

Full ABCC4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ABCC4 p.Ala1282Thr Uncertain significance ★★ ⚠ same type
ABCC4 p.Ala1324Thr Uncertain significance ★★ ⚠ same type
ABCC4 p.Leu238Phe Uncertain significance ★★ ⚠ same type
ABCC4 p.Tyr788Cys Uncertain significance ★★ ⚠ same type
ABCC4 c.1825-7A>G Benign ★★ same type
ABCC4 c.185+7C>T Benign ★★ same type
ABCC4 c.307-10C>T Benign/Likely benign ★★ same type
ABCC4 p.Ala700= 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/abcc4-p-ile818val (accessed [today's date]).

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