rs200858701

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4BS2

The NM_001170629.2(CHD8):​c.6206C>T​(p.Ser2069Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000335 in 1,613,580 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 (★★). Synonymous variant affecting the same amino acid position (i.e. S2069S) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000036 ( 0 hom. )

Consequence

CHD8
NM_001170629.2 missense

Scores

1
9
9

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 6.06

Publications

0 publications found
Variant links:
Genes affected
CHD8 (HGNC:20153): (chromodomain helicase DNA binding protein 8) This gene encodes a member of the chromodomain-helicase-DNA binding protein family, which is characterized by a SNF2-like domain and two chromatin organization modifier domains. The encoded protein also contains brahma and kismet domains, which are common to the subfamily of chromodomain-helicase-DNA binding proteins to which this protein belongs. This gene has been shown to function in several processes that include transcriptional regulation, epigenetic remodeling, promotion of cell proliferation, and regulation of RNA synthesis. Allelic variants of this gene are associated with autism spectrum disorder. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2016]
CHD8 Gene-Disease associations (from GenCC):
  • complex neurodevelopmental disorder
    Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
  • autism
    Inheritance: AD Classification: STRONG Submitted by: G2P
  • intellectual developmental disorder with autism and macrocephaly
    Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
  • intellectual disability
    Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics
  • congenital myasthenic syndrome
    Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BP4
Computational evidence support a benign effect (MetaRNN=0.26476228).
BS2
High AC in GnomAdExome4 at 52 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CHD8NM_001170629.2 linkc.6206C>T p.Ser2069Leu missense_variant Exon 32 of 38 ENST00000646647.2 NP_001164100.1 Q9HCK8-1
CHD8NM_020920.4 linkc.5369C>T p.Ser1790Leu missense_variant Exon 32 of 38 NP_065971.2 Q9HCK8-2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CHD8ENST00000646647.2 linkc.6206C>T p.Ser2069Leu missense_variant Exon 32 of 38 NM_001170629.2 ENSP00000495240.1 Q9HCK8-1

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152146
Hom.:
0
Cov.:
32
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:
0.000193
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:
0.0000282
AC:
7
AN:
248340
AF XY:
0.0000148
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000291
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000559
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000266
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000356
AC:
52
AN:
1461316
Hom.:
0
Cov.:
34
AF XY:
0.0000344
AC XY:
25
AN XY:
726888
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33478
American (AMR)
AF:
0.0000224
AC:
1
AN:
44652
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26120
East Asian (EAS)
AF:
0.000126
AC:
5
AN:
39690
South Asian (SAS)
AF:
0.000116
AC:
10
AN:
86140
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53366
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.0000306
AC:
34
AN:
1111730
Other (OTH)
AF:
0.0000331
AC:
2
AN:
60372
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.465
Heterozygous variant carriers
0
4
7
11
14
18
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:
0.0000131
AC:
2
AN:
152264
Hom.:
0
Cov.:
32
AF XY:
0.0000134
AC XY:
1
AN XY:
74442
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41566
American (AMR)
AF:
0.00
AC:
0
AN:
15290
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.000193
AC:
1
AN:
5170
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10614
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68016
Other (OTH)
AF:
0.00
AC:
0
AN:
2110
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.550
Heterozygous variant carriers
0
0
1
1
2
2
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:
0.0000401
Hom.:
0
Bravo
AF:
0.0000189
ExAC
AF:
0.0000496
AC:
6
Asia WGS
AF:
0.000866
AC:
3
AN:
3478

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Inborn genetic diseases Uncertain:1
Mar 12, 2015
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

not provided Uncertain:1
Aug 24, 2023
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant is present in population databases (rs200858701, gnomAD 0.01%). This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 2069 of the CHD8 protein (p.Ser2069Leu). This variant has not been reported in the literature in individuals affected with CHD8-related conditions. ClinVar contains an entry for this variant (Variation ID: 520632). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt CHD8 protein function. 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. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.30
BayesDel_addAF
Uncertain
0.11
D
BayesDel_noAF
Uncertain
0.10
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Benign
0.30
.;T;T;.;T;T
Eigen
Uncertain
0.52
Eigen_PC
Uncertain
0.57
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.94
.;D;.;D;.;.
M_CAP
Benign
0.072
D
MetaRNN
Benign
0.26
T;T;T;T;T;T
MetaSVM
Uncertain
0.24
D
MutationAssessor
Benign
1.7
.;L;L;.;L;L
PhyloP100
6.1
PrimateAI
Uncertain
0.71
T
PROVEAN
Benign
-2.3
N;N;.;.;N;.
REVEL
Uncertain
0.47
Sift
Benign
0.056
T;D;.;.;D;.
Sift4G
Benign
0.11
T;T;.;.;T;.
Polyphen
1.0
D;.;.;D;.;.
Vest4
0.42
MutPred
0.21
.;Loss of phosphorylation at S2069 (P = 4e-04);Loss of phosphorylation at S2069 (P = 4e-04);.;Loss of phosphorylation at S2069 (P = 4e-04);Loss of phosphorylation at S2069 (P = 4e-04);
MVP
0.72
MPC
0.44
ClinPred
0.48
T
GERP RS
5.3
PromoterAI
-0.013
Neutral
Varity_R
0.31
gMVP
0.33
Mutation Taster
=49/51
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
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: rs200858701; hg19: chr14-21861748; API