rs199470473

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_012330.4(KAT6B):​c.3802G>A​(p.Gly1268Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000991 in 1,614,030 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

KAT6B
NM_012330.4 missense

Scores

4
12
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.01

Publications

2 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BS2
High AC in GnomAd4 at 8 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
KAT6BNM_012330.4 linkc.3802G>A p.Gly1268Arg missense_variant Exon 18 of 18 ENST00000287239.10 NP_036462.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
KAT6BENST00000287239.10 linkc.3802G>A p.Gly1268Arg missense_variant Exon 18 of 18 1 NM_012330.4 ENSP00000287239.4

Frequencies

GnomAD3 genomes
AF:
0.0000526
AC:
8
AN:
152150
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000145
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000655
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:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000795
AC:
2
AN:
251456
AF XY:
0.0000147
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000289
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000462
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000547
AC:
8
AN:
1461880
Hom.:
0
Cov.:
34
AF XY:
0.00000688
AC XY:
5
AN XY:
727240
show subpopulations
African (AFR)
AF:
0.0000597
AC:
2
AN:
33480
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.0000383
AC:
1
AN:
26136
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86258
European-Finnish (FIN)
AF:
0.0000187
AC:
1
AN:
53406
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00000180
AC:
2
AN:
1112012
Other (OTH)
AF:
0.0000166
AC:
1
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.481
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000526
AC:
8
AN:
152150
Hom.:
0
Cov.:
32
AF XY:
0.0000538
AC XY:
4
AN XY:
74340
show subpopulations
African (AFR)
AF:
0.000145
AC:
6
AN:
41438
American (AMR)
AF:
0.0000655
AC:
1
AN:
15268
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5196
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10608
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68028
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.550
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.0000328
Hom.:
0
Bravo
AF:
0.0000378
ExAC
AF:
0.00000824
AC:
1

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Uncertain:1
May 10, 2023
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Observed in patient with neurodevelopmental disorders in published literature; however, no further clinical information was provided (Wang et al., 2020); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Missense variant in a gene in which most reported pathogenic variants are truncating/loss of function; This variant is associated with the following publications: (PMID: 33004838) -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.81
BayesDel_addAF
Uncertain
0.092
D
BayesDel_noAF
Uncertain
0.060
CADD
Pathogenic
27
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.49
T;.;T;.;.;.;.;.;.;T;.;.
Eigen
Uncertain
0.56
Eigen_PC
Uncertain
0.58
FATHMM_MKL
Pathogenic
0.98
D
M_CAP
Uncertain
0.20
D
MetaRNN
Uncertain
0.63
D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM
Uncertain
0.24
D
MutationAssessor
Uncertain
2.4
M;.;M;.;.;.;.;.;.;M;.;.
PhyloP100
7.0
PrimateAI
Uncertain
0.77
T
PROVEAN
Pathogenic
-5.2
.;.;.;D;.;.;.;.;D;D;.;D
REVEL
Uncertain
0.55
Sift
Pathogenic
0.0
.;.;.;D;.;.;.;.;D;D;.;D
Sift4G
Benign
0.17
.;.;.;T;.;.;.;.;T;D;.;T
Polyphen
1.0
D;D;D;D;.;.;D;D;D;D;.;D
Vest4
0.68, 0.71, 0.63, 0.56
MutPred
0.32
Gain of solvent accessibility (P = 0.0456);.;Gain of solvent accessibility (P = 0.0456);.;.;.;.;.;.;Gain of solvent accessibility (P = 0.0456);Gain of solvent accessibility (P = 0.0456);.;
MVP
0.64
MPC
0.84
ClinPred
0.99
D
GERP RS
5.0
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.52
gMVP
0.40
Mutation Taster
=67/33
polymorphism

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

Other links and lift over

dbSNP: rs199470473; hg19: chr10-76788384; API