chr14-21385739-G-A

Variant names:

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6BP7BS1BS2

The NM_001170629.2(CHD8):c.7620C>T(p.Asp2540Asp) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00064 in 1,551,282 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00052 ( 0 hom., cov: 30)

Exomes 𝑓: 0.00065 ( 2 hom. )

Consequence

CHD8
NM_001170629.2 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: -0.651

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 links:

LOC107984643 (HGNC:):

LOC107984643 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.79).

BP6

Variant 14-21385739-G-A is Benign according to our data. Variant chr14-21385739-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 196999.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Benign=3, Likely_benign=1}.

BP7

Synonymous conserved (PhyloP=-0.651 with no splicing effect.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000521 (79/151732) while in subpopulation NFE AF= 0.000633 (43/67934). AF 95% confidence interval is 0.000482. There are 0 homozygotes in gnomad4. There are 39 alleles in male gnomad4 subpopulation. Median coverage is 30. This position pass quality control queck.

BS2

High AC in GnomAd4 at 79 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHD8	NM_001170629.2 link	c.7620C>T	p.Asp2540Asp	synonymous_variant	Exon 38 of 38	ENST00000646647.2	NP_001164100.1	Q9HCK8-1
CHD8	NM_020920.4 link	c.6783C>T	p.Asp2261Asp	synonymous_variant	Exon 38 of 38		NP_065971.2	Q9HCK8-2
LOC107984643	XR_001750627.2 link	n.441+1026G>A		intron_variant	Intron 1 of 1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHD8	ENST00000646647.2 link	c.7620C>T	p.Asp2540Asp	synonymous_variant	Exon 38 of 38		NM_001170629.2	ENSP00000495240.1		Q9HCK8-1

Frequencies

GnomAD3 genomes

AF:

0.000521

AC:

AN:

151618

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000970

Gnomad AMI

AF:

0.00439

Gnomad AMR

AF:

0.000461

Gnomad ASJ

AF:

0.00519

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000623

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000633

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000895

AC:

141

AN:

157494

Hom.:

AF XY:

0.000950

AC XY:

AN XY:

83158

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000729

Gnomad ASJ exome

AF:

0.00504

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000922

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000849

Gnomad OTH exome

AF:

0.00158

GnomAD4 exome

AF:

0.000653

AC:

914

AN:

1399550

Hom.:

Cov.:

AF XY:

0.000663

AC XY:

458

AN XY:

690284

show subpopulations

Gnomad4 AFR exome

AF:

0.0000633

Gnomad4 AMR exome

AF:

0.000756

Gnomad4 ASJ exome

AF:

0.00417

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000997

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000575

Gnomad4 OTH exome

AF:

0.00122

GnomAD4 genome

AF:

0.000521

AC:

AN:

151732

Hom.:

Cov.:

AF XY:

0.000526

AC XY:

AN XY:

74144

show subpopulations

Gnomad4 AFR

AF:

0.0000967

Gnomad4 AMR

AF:

0.000461

Gnomad4 ASJ

AF:

0.00519

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000623

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000633

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000792

Hom.:

Bravo

AF:

0.000582

Asia WGS

AF:

0.00115

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:3

May 28, 2015

Eurofins Ntd Llc (ga)

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

CHD8: BS1, BS2 -

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 24, 2020

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Inborn genetic diseases

Benign:1

Jun 22, 2017

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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.79

CADD

Benign

3.4

DANN

Benign

0.82

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

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