chr14-21394474-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP6BS1BS2

The NM_001170629.2(CHD8):c.5402G>A(p.Arg1801His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000548 in 1,597,362 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00037 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00057 ( 0 hom. )

Consequence

CHD8
NM_001170629.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:5

Conservation

PhyloP100: 7.91

Publications

3 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

CHD8 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP6

Variant 14-21394474-C-T is Benign according to our data. Variant chr14-21394474-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 289377.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.000368 (56/152240) while in subpopulation AMR AF = 0.000654 (10/15290). AF 95% confidence interval is 0.000431. There are 0 homozygotes in GnomAd4. There are 27 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High AC in GnomAd4 at 56 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHD8	NM_001170629.2 link	c.5402G>A	p.Arg1801His	missense_variant	Exon 31 of 38	ENST00000646647.2	NP_001164100.1	Q9HCK8-1
CHD8	NM_020920.4 link	c.4565G>A	p.Arg1522His	missense_variant	Exon 31 of 38		NP_065971.2	Q9HCK8-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHD8	ENST00000646647.2 link	c.5402G>A	p.Arg1801His	missense_variant	Exon 31 of 38		NM_001170629.2	ENSP00000495240.1		Q9HCK8-1

Frequencies

GnomAD3 genomes

AF:

0.000368

AC:

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000655

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:

0.000573

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000312

AC:

AN:

217978

AF XY:

0.000263

show subpopulations

Gnomad AFR exome

AF:

0.0000755

Gnomad AMR exome

AF:

0.000601

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000488

Gnomad OTH exome

AF:

0.000360

GnomAD4 exome

AF:

0.000567

AC:

820

AN:

1445122

Hom.:

Cov.:

AF XY:

0.000588

AC XY:

422

AN XY:

717528

show subpopulations

African (AFR)

AF:

0.0000602

AC:

AN:

33218

American (AMR)

AF:

0.000753

AC:

AN:

41166

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25770

East Asian (EAS)

AF:

0.00

AC:

AN:

39136

South Asian (SAS)

AF:

0.0000237

AC:

AN:

84284

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52590

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5750

European-Non Finnish (NFE)

AF:

0.000674

AC:

744

AN:

1103290

Other (OTH)

AF:

0.000668

AC:

AN:

59918

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

117

156

195

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

112

140

<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:

0.000368

AC:

AN:

152240

Hom.:

Cov.:

AF XY:

0.000363

AC XY:

AN XY:

74460

show subpopulations

African (AFR)

AF:

0.000169

AC:

AN:

41524

American (AMR)

AF:

0.000654

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000573

AC:

AN:

68014

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.000453

Hom.:

Bravo

AF:

0.000423

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000120

AC:

ExAC

AF:

0.000216

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:3

Aug 16, 2019

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jul 26, 2016

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

CHD8: PP2, PP3, BS2 -

Oct 23, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Intellectual developmental disorder with autism and macrocephaly

Uncertain:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Inborn genetic diseases

Benign:1

May 17, 2021

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

CHD8-related disorder

Benign:1

Jun 28, 2022

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.94

BayesDel_addAF

Uncertain

0.14

BayesDel_noAF

Pathogenic

0.32

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.86

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

Eigen

Pathogenic

0.94

Eigen_PC

Pathogenic

0.89

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

1.0

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

M_CAP

Pathogenic

0.41

MetaRNN

Uncertain

0.71

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

MetaSVM

Pathogenic

1.1

MutationAssessor

Uncertain

2.8

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

PhyloP100

7.9

PrimateAI

Pathogenic

0.87

PROVEAN

Pathogenic

-4.7

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

REVEL

Pathogenic

0.91

Sift

Pathogenic

0.0

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

Sift4G

Pathogenic

0.0010

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

Polyphen

1.0

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

Vest4

0.71

MVP

0.94

MPC

1.1

ClinPred

0.85

GERP RS

5.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.84

gMVP

0.75

Mutation Taster

=29/71

disease causing

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over