Is AP3D1 p.Ser298Arg (c.894C>G) pathogenic?

AP3D1 p.Ser298Arg (c.894C>G) is classified Uncertain significance in AP3D1 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-05-05). AlphaMissense: likely pathogenic (0.9692); Absent from gnomAD v4.1; Associated with Inborn genetic diseases.

What condition is associated with AP3D1 p.Ser298Arg (c.894C>G)?

AP3D1 p.Ser298Arg (c.894C>G) is associated with Inborn genetic diseases (ClinVar).

How common is AP3D1 p.Ser298Arg (c.894C>G) in the general population?

AP3D1 p.Ser298Arg (c.894C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about AP3D1 p.Ser298Arg (c.894C>G)?

AlphaMissense predicts likely pathogenic (score 0.9692) — an in-silico prediction, not a clinical call.

AP3D1 p.Ser298Arg

c.894C>G · VCV3380557

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely pathogenic

0.9692 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.9692	likely pathogenic
REVEL	0.262	benign-leaning
SaProt	LLR -12.74	damaging
⇒ AlphaMissense and SaProt call this damaging; REVEL does not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.81	GERP -2.9
Regional constraint	o/e 0.71	unconstrained · MANE · 28 kb · p 3.4e-09 · regional, not allelic
Overall
CADD	18.6	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: AP3D1
Protein: p.Ser298Arg
Coding: c.894C>G
MANE Select: NM_001261826
Type: single nucleotide variant
Location: chr19:2123842 (GRCh38)
Gene constraint: LOEUF 0.443 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 76.45 · 6 PDB

Full AP3D1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

AP3D1 c.856+3G>A Uncertain significance ★★ same condition
AP3D1 p.Ala1076Val Uncertain significance ★★ ⚠ same condition
AP3D1 p.Ala247Val Uncertain significance ★★ ⚠ same condition
AP3D1 p.Ala285Ser Uncertain significance ★★ ⚠ same condition
AP3D1 p.Ala299Thr Uncertain significance ★★ ⚠ same condition
AP3D1 p.Ala438Thr Uncertain significance ★★ ⚠ same condition
AP3D1 p.Ala450Thr Uncertain significance ★★ ⚠ same condition
AP3D1 p.Ala461Val 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/ap3d1-p-ser298arg (accessed [today's date]).

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