Is KAT8 p.Pro322Ala (c.964C>G) pathogenic?

KAT8 p.Pro322Ala (c.964C>G) is classified Uncertain significance in KAT8 (ClinVar, No assertion criteria, 1 submitter; last evaluated 2024-10-07). AlphaMissense: likely pathogenic (0.7419); Absent from gnomAD v4.1; Associated with Li-Ghorbani-Weisz-Hubshman syndrome.

What condition is associated with KAT8 p.Pro322Ala (c.964C>G)?

KAT8 p.Pro322Ala (c.964C>G) is associated with Li-Ghorbani-Weisz-Hubshman syndrome (ClinVar).

How common is KAT8 p.Pro322Ala (c.964C>G) in the general population?

KAT8 p.Pro322Ala (c.964C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about KAT8 p.Pro322Ala (c.964C>G)?

AlphaMissense predicts likely pathogenic (score 0.7419) — an in-silico prediction, not a clinical call.

KAT8 p.Pro322Ala

c.964C>G · VCV3899232

Uncertain significance No assertion criteria

Classification

Uncertain significance

ClinVar

Review

No assertion criteria ☆☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.7419 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

Li-Ghorbani-Weisz-Hubshman syndrome

Computational evidence

Protein change
AlphaMissense	0.7419	likely pathogenic
REVEL	0.593	indeterminate
SaProt	LLR -11.51	damaging
⇒ AlphaMissense and SaProt both call this damaging; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.7	GERP 2.6, phastCons 1
Regional constraint	o/e 0.63	unconstrained · MANE · 3,292 bp · p 4.6e-08 · regional, not allelic
Overall
CADD	24.5	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — 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

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: KAT8
Protein: p.Pro322Ala
Coding: c.964C>G
MANE Select: NM_032188
Type: single nucleotide variant
Location: chr16:31130318 (GRCh38)
Gene constraint: LOEUF 0.852 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 83.01 · 44 PDB
Residue 322: the myst-type hat domain; a UniProt-annotated variant site (found in a severe neurodevelopmental disorder similar to li-ghorbani-weisz-hubshman syndrome with apparently autosomal recessive inheritance; uncertain significance; loss of protein expression); the 'sufficient for interaction with kansl1' region; an α-helix

Full KAT8 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Li-Ghorbani-Weisz-Hubshman syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

KAT8 p.Pro322Leu Uncertain significance ★ ⚠ same residue
KAT8 p.Tyr90Cys Likely pathogenic ★★ same condition
KAT8 p.Gly19Arg Uncertain significance ★★ ⚠ same condition
KAT8 p.Ile57Val Uncertain significance ★★ ⚠ same condition
KAT8 p.His92Arg Pathogenic ★ same condition
KAT8 p.Lys175Thr Likely pathogenic ★ same condition
KAT8 c.1312+24C>G Conflicting classifications of pathogenicity ★ same condition
KAT8 p.Ala47Glu 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/kat8-p-pro322ala (accessed [today's date]).

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