rs786200960

chr8-41934835-G-A

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_006766.5(KAT6A):c.3385C>T(p.Arg1129Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: KAT6A NM_006766.5 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:15
• Conservation: PhyloP100: 1.22

Genes affected

KAT6A (HGNC:13013): (lysine acetyltransferase 6A) This gene encodes a member of the MOZ, YBFR2, SAS2, TIP60 family of histone acetyltransferases. The protein is composed of a nuclear localization domain, a double C2H2 zinc finger domain that binds to acetylated histone tails, a histone acetyl-transferase domain, a glutamate/aspartate-rich region, and a serine- and methionine-rich transactivation domain. It is part of a complex that acetylates lysine-9 residues in histone 3, and in addition, it acts as a co-activator for several transcription factors. Allelic variants of this gene are associated with an autosomal dominant form of cognitive disability. Chromosomal translocations of this gene are associated with acute myeloid leukemia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2017]

ACMG classification

Verdict is Pathogenic. Variant got 18 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 43 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 8-41934835-G-A is Pathogenic according to our data. Variant chr8-41934835-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 180229.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-41934835-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KAT6A	NM_006766.5	c.3385C>T	p.Arg1129Ter	stop_gained	17/17	ENST00000265713.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KAT6A	ENST00000265713.8	c.3385C>T	p.Arg1129Ter	stop_gained	17/17	1	NM_006766.5	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:15

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Autosomal dominant intellectual disability-craniofacial anomalies-cardiac defects syndrome Pathogenic:6

Pathogenic, criteria provided, single submitter	research	Duke University Health System Sequencing Clinic, Duke University Health System	Apr 20, 2023	- -
Pathogenic, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Mar 14, 2022	- -
Pathogenic, criteria provided, single submitter	research	DECIPHERD-UDD, Universidad del Desarrollo	Jul 01, 2023	- -
Pathogenic, criteria provided, single submitter	clinical testing	Daryl Scott Lab, Baylor College of Medicine	Nov 10, 2023	- -
Pathogenic, criteria provided, single submitter	clinical testing	Victorian Clinical Genetics Services, Murdoch Childrens Research Institute	Oct 19, 2020	Based on the classification scheme VCGS_Germline_v1.1.1, this variant is classified as Pathogenic. Following criteria are met: 0102 - Loss-of-function is a known mechanism of disease for this gene. (N) 0107 - This gene is known to be associated with autosomal dominant disease. (N) 0204 - Variant is predicted to result in a truncated protein with more than 1/3 of the protein affected (exon 17 of 17). (P) 0251 - Variant is heterozygous. (N) 0301 - Variant is absent from gnomAD. (P) 0401 - Variant is located in a gene associated with a severe early-onset dominant condition that is intolerant to loss-of-function variants. (P) 0601 - Variant affects at least one well-established (essential) functional domain or motif. The variant is located within the transactivation domain which is essential for normal protein function (PMID: 25728777). (P) 0701 - Comparable variants have very strong previous evidence for pathogenicity. Many other downstream truncating variants have previously been reported as pathogenic (ClinVar, PMID: 30245513). (P) 0801 - Strong previous evidence of pathogenicity in unrelated individuals. The variant has previously been reported as de novo in multiple patients (ClinVar, PMID: 25728775, PMID: 30245513). (P) 1203 - Variant shown to be de novo in proband (parental status confirmed). (P) Legend: (P) - Pathogenic, (N) - Neutral, (B) - Benign -
Pathogenic, no assertion criteria provided	literature only	OMIM	Mar 05, 2015	- -

not provided Pathogenic:6

Pathogenic, criteria provided, single submitter	clinical testing	Invitae	Sep 07, 2022	This variant is not present in population databases (gnomAD no frequency). For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 180229). This premature translational stop signal has been observed in individual(s) with KAT6A-related conditions (PMID: 25728775, 32041641). In at least one individual the variant was observed to be de novo. This sequence change creates a premature translational stop signal (p.Arg1129*) in the KAT6A gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 876 amino acid(s) of the KAT6A protein. -
Pathogenic, criteria provided, single submitter	clinical testing	Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden	Apr 06, 2022	PVS1, PM2_SUP, PS3 -
Pathogenic, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jan 01, 2019	- -
Pathogenic, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Pathogenic, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Laboratoire de Génétique Moléculaire, CHU Bordeaux	-	- -

KAT6A syndrome Pathogenic:2

Pathogenic, no assertion criteria provided	clinical testing	UCLA Clinical Genomics Center, UCLA	Jan 15, 2015	- -
Pathogenic, no assertion criteria provided	clinical testing	Centre de Biologie Pathologie Génétique, Centre Hospitalier Universitaire de Lille	Jan 01, 2019	- -

Inborn genetic diseases Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 28, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.43
Cadd	Pathogenic	34
Dann	Uncertain	1.0
Eigen	Uncertain	0.25
Eigen_PC	Benign	0.051
FATHMM_MKL	Benign	0.65	D
MutationTaster	Benign	1.0	D;D;D
Vest4		0.97
GERP RS		1.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs786200960; hg19: chr8-41792353; COSMIC: COSV55908606;