Genetic Variant KAT2A:p.Arg790Gln (chr17-42113794-C-T) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_021078.3(KAT2A):c.2369G>A(p.Arg790Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000174 in 1,607,458 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

KAT2A
NM_021078.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.02

Variant links:

Genes affected

KAT2A (HGNC:4201): (lysine acetyltransferase 2A) KAT2A, or GCN5, is a histone acetyltransferase (HAT) that functions primarily as a transcriptional activator. It also functions as a repressor of NF-kappa-B (see MIM 164011) by promoting ubiquitination of the NF-kappa-B subunit RELA (MIM 164014) in a HAT-independent manner (Mao et al., 2009 [PubMed 19339690]).[supplied by OMIM, Sep 2009]

KAT2A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.2670123).

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KAT2A	NM_021078.3 link	c.2369G>A	p.Arg790Gln	missense_variant	Exon 18 of 18	ENST00000225916.10	NP_066564.2	Q92830-1
KAT2A	NM_001376227.1 link	c.2372G>A	p.Arg791Gln	missense_variant	Exon 18 of 18		NP_001363156.1
KAT2A	XM_006721818.5 link	c.1289G>A	p.Arg430Gln	missense_variant	Exon 13 of 13		XP_006721881.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
KAT2A	ENST00000225916.10 link	c.2369G>A	p.Arg790Gln	missense_variant	Exon 18 of 18	1	NM_021078.3	ENSP00000225916.5	Q92830-1
KAT2A	ENST00000465682.5 link	n.*1483G>A		non_coding_transcript_exon_variant	Exon 18 of 18	5		ENSP00000468390.1	K7ERS6
KAT2A	ENST00000586972.1 link	n.448G>A		non_coding_transcript_exon_variant	Exon 2 of 2	2
KAT2A	ENST00000465682.5 link	n.*1483G>A		3_prime_UTR_variant	Exon 18 of 18	5		ENSP00000468390.1	K7ERS6

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000410

AC:

AN:

244158

Hom.:

AF XY:

0.00000754

AC XY:

AN XY:

132618

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000333

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000158

AC:

AN:

1455244

Hom.:

Cov.:

AF XY:

0.0000207

AC XY:

AN XY:

724130

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.0000233

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000162

Gnomad4 OTH exome

AF:

0.0000333

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000216

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 10, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2369G>A (p.R790Q) alteration is located in exon 18 (coding exon 18) of the KAT2A gene. This alteration results from a G to A substitution at nucleotide position 2369, causing the arginine (R) at amino acid position 790 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.44

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.29

Eigen

Uncertain

0.24

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.82

LIST_S2

Uncertain

0.97

M_CAP

Benign

0.015

MetaRNN

Benign

0.27

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.9

PrimateAI

Uncertain

0.72

PROVEAN

Benign

-2.1

REVEL

Benign

0.16

Sift

Uncertain

0.013

Sift4G

Benign

0.17

Polyphen

0.81

Vest4

0.20

MutPred

0.70

Loss of helix (P = 0.0123);

MVP

0.50

MPC

1.3

ClinPred

0.77

GERP RS

3.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.41

gMVP

0.20

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over