rs368081386

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP6BS2

The NM_012330.4(KAT6B):c.2248C>A(p.Leu750Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000052 in 1,538,868 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. L750L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000036 ( 0 hom. )

Consequence

KAT6B
NM_012330.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 4.06

Publications

0 publications found

Variant links:

Genes affected

KAT6B (HGNC:17582): (lysine acetyltransferase 6B) The protein encoded by this gene is a histone acetyltransferase and component of the MOZ/MORF protein complex. In addition to its acetyltransferase activity, the encoded protein has transcriptional activation activity in its N-terminal end and transcriptional repression activity in its C-terminal end. This protein is necessary for RUNX2-dependent transcriptional activation and could be involved in brain development. Mutations have been found in patients with genitopatellar syndrome. A translocation of this gene and the CREBBP gene results in acute myeloid leukemias. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2012]

KAT6B Gene-Disease associations (from GenCC):

blepharophimosis - intellectual disability syndrome, SBBYS type
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet
genitopatellar syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P
KAT6B-related multiple congenital anomalies syndrome
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
RASopathy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

KAT6B links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP6

Variant 10-74981803-C-A is Benign according to our data. Variant chr10-74981803-C-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 235589.

BS2

High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KAT6B	NM_012330.4 link	c.2248C>A	p.Leu750Met	missense_variant	Exon 11 of 18	ENST00000287239.10	NP_036462.2	Q8WYB5-1B2RWN8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KAT6B	ENST00000287239.10 link	c.2248C>A	p.Leu750Met	missense_variant	Exon 11 of 18	1	NM_012330.4	ENSP00000287239.4		Q8WYB5-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152146

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000399

AC:

AN:

250734

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000882

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000361

AC:

AN:

1386722

Hom.:

Cov.:

AF XY:

0.00000144

AC XY:

AN XY:

693784

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31850

American (AMR)

AF:

0.00

AC:

AN:

44614

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25724

East Asian (EAS)

AF:

0.00

AC:

AN:

39252

South Asian (SAS)

AF:

0.00

AC:

AN:

84614

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53378

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5012

European-Non Finnish (NFE)

AF:

0.00000479

AC:

AN:

1044464

Other (OTH)

AF:

0.00

AC:

AN:

57814

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.535

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152146

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74314

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41432

American (AMR)

AF:

0.00

AC:

AN:

15264

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5208

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10594

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000151

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Genitopatellar syndrome

Uncertain:1

Aug 31, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces leucine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 750 of the KAT6B protein (p.Leu750Met). This variant is present in population databases (rs368081386, gnomAD 0.002%). This variant has not been reported in the literature in individuals affected with KAT6B-related conditions. ClinVar contains an entry for this variant (Variation ID: 235589). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt KAT6B protein function with a positive predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not provided

Benign:1

Apr 18, 2016

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.49

BayesDel_addAF

Uncertain

0.091

BayesDel_noAF

Benign

-0.090

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.28

T;.;.;T;.;.;.;.;.;.;.;.;T;.;.;.;.;.;.

Eigen

Uncertain

0.44

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Uncertain

0.95

M_CAP

Benign

0.028

MetaRNN

Uncertain

0.54

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Uncertain

-0.053

MutationAssessor

Uncertain

2.6

M;.;.;M;.;.;.;.;.;.;.;.;M;.;.;.;.;.;.

PhyloP100

4.1

PrimateAI

Pathogenic

0.82

PROVEAN

Benign

-1.8

.;.;.;.;N;.;.;.;.;.;.;N;N;.;.;.;.;N;.

REVEL

Uncertain

0.60

Sift

Benign

0.043

.;.;.;.;D;.;.;.;.;.;.;D;D;.;.;.;.;D;.

Sift4G

Uncertain

0.042

.;.;.;.;D;.;.;.;.;.;.;D;D;.;.;.;.;D;.

Polyphen

1.0

D;.;P;D;P;.;.;.;P;D;.;P;D;.;.;.;.;D;.

Vest4

0.45, 0.46, 0.56, 0.61

MVP

0.90

MPC

1.8

ClinPred

0.64

GERP RS

4.8

Varity_R

0.24

gMVP

0.54

Mutation Taster

=56/44

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over