Is KAT8 p.Lys181Asn (c.543G>C) pathogenic?

KAT8 p.Lys181Asn (c.543G>C) is classified Pathogenic in KAT8 (ClinVar, No assertion criteria, 1 submitter; last evaluated 2020-08-12). AlphaMissense: likely pathogenic (0.9818); Very rare (popmax 8.47e-05%, nfe); Associated with Li-Ghorbani-Weisz-Hubshman syndrome.

What condition is associated with KAT8 p.Lys181Asn (c.543G>C)?

KAT8 p.Lys181Asn (c.543G>C) is associated with Li-Ghorbani-Weisz-Hubshman syndrome (ClinVar).

How common is KAT8 p.Lys181Asn (c.543G>C) in the general population?

KAT8 p.Lys181Asn (c.543G>C) is very rare (popmax 8.47e-05%, nfe) (gnomAD).

What do computational predictors say about KAT8 p.Lys181Asn (c.543G>C)?

AlphaMissense predicts likely pathogenic (score 0.9818) — an in-silico prediction, not a clinical call.

KAT8 p.Lys181Asn

c.543G>C · rs2057538160 · VCV976463

Pathogenic No assertion criteria

Classification

Pathogenic

ClinVar

Review

No assertion criteria ☆☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9818 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 8.47e-05%, nfe)

Missense predictors

2/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

Li-Ghorbani-Weisz-Hubshman syndrome

Computational evidence

Protein change
AlphaMissense	0.9818	likely pathogenic ✓ concordant with ClinVar
REVEL	0.455	indeterminate
SaProt	LLR -12.00	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 7.6	GERP 1.4, phastCons 1
Regional constraint	o/e 0.63	unconstrained · MANE · 3,292 bp · p 4.6e-08 · regional, not allelic
Overall
CADD	25.1	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

Grpmax group 8.47e-05% European (non-Finnish) · 1/1,180,024 alleles

Overall 6.84e-05% 1/1,461,864 alleles · very rare

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: KAT8
Protein: p.Lys181Asn
Coding: c.543G>C
MANE Select: NM_032188
dbSNP: rs2057538160
Type: single nucleotide variant
Location: chr16:31127215 (GRCh38)
Gene constraint: LOEUF 0.852 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 83.01 · 44 PDB
Residue 181: 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); a UniProt-annotated variant site (in ligows; uncertain significance; no effect on protein expression; no effect on msl complex assembly; decreased histone acetyltransferase activity); the 'sufficient for interaction with kansl1' region; a β-strand

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.Lys181Glu 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-lys181asn (accessed [today's date]).

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