NM_017780.4:c.1018A>G

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_017780.4(CHD7):c.1018A>G(p.Met340Val) variant causes a missense change. The variant allele was found at a frequency of 0.00619 in 1,614,006 control chromosomes in the GnomAD database, including 37 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0050 ( 4 hom., cov: 32)

Exomes 𝑓: 0.0063 ( 33 hom. )

Consequence

CHD7
NM_017780.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:19

Conservation

PhyloP100: 4.82

Publications

20 publications found

Variant links:

Genes affected

CHD7 (HGNC:20626): (chromodomain helicase DNA binding protein 7) This gene encodes a protein that contains several helicase family domains. Mutations in this gene have been found in some patients with the CHARGE syndrome. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

CHD7 Gene-Disease associations (from GenCC):

CHARGE syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, PanelApp Australia, Broad Center for Mendelian Genomics, ClinGen, G2P
hypogonadotropic hypogonadism 5 with or without anosmia
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
hypogonadotropic hypogonadism
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Kallmann syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Omenn syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CHD7 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.00827083).

BP6

Variant 8-60742450-A-G is Benign according to our data. Variant chr8-60742450-A-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 95773.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00496 (755/152334) while in subpopulation AMR AF = 0.00915 (140/15300). AF 95% confidence interval is 0.00792. There are 4 homozygotes in GnomAd4. There are 393 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 4 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHD7	NM_017780.4 link	c.1018A>G	p.Met340Val	missense_variant	Exon 2 of 38	ENST00000423902.7	NP_060250.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHD7	ENST00000423902.7 link	c.1018A>G	p.Met340Val	missense_variant	Exon 2 of 38	5	NM_017780.4	ENSP00000392028.1

Frequencies

GnomAD3 genomes

AF:

0.00496

AC:

755

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00109

Gnomad AMI

AF:

0.0230

Gnomad AMR

AF:

0.00916

Gnomad ASJ

AF:

0.00720

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00124

Gnomad FIN

AF:

0.00217

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00707

Gnomad OTH

AF:

0.00623

GnomAD2 exomes

AF:

0.00462

AC:

1151

AN:

249288

AF XY:

0.00467

show subpopulations

Gnomad AFR exome

AF:

0.00168

Gnomad AMR exome

AF:

0.00359

Gnomad ASJ exome

AF:

0.00944

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00167

Gnomad NFE exome

AF:

0.00712

Gnomad OTH exome

AF:

0.00578

GnomAD4 exome

AF:

0.00632

AC:

9236

AN:

1461672

Hom.:

Cov.:

AF XY:

0.00623

AC XY:

4533

AN XY:

727126

show subpopulations

African (AFR)

AF:

0.00114

AC:

AN:

33480

American (AMR)

AF:

0.00373

AC:

167

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00907

AC:

237

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.000951

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00225

AC:

120

AN:

53402

Middle Eastern (MID)

AF:

0.00555

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00740

AC:

8232

AN:

1111834

Other (OTH)

AF:

0.00542

AC:

327

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

587

1174

1761

2348

2935

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

302

604

906

1208

1510

<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:

0.00496

AC:

755

AN:

152334

Hom.:

Cov.:

AF XY:

0.00528

AC XY:

393

AN XY:

74494

show subpopulations

African (AFR)

AF:

0.00108

AC:

AN:

41582

American (AMR)

AF:

0.00915

AC:

140

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00720

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00124

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00217

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00707

AC:

481

AN:

68030

Other (OTH)

AF:

0.00616

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

122

162

203

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.00616

Hom.:

Bravo

AF:

0.00528

TwinsUK

AF:

0.00998

AC:

ALSPAC

AF:

0.00804

AC:

ESP6500AA

AF:

0.00177

AC:

ESP6500EA

AF:

0.00745

AC:

ExAC

AF:

0.00418

AC:

506

Asia WGS

AF:

0.00173

AC:

AN:

3478

EpiCase

AF:

0.00851

EpiControl

AF:

0.00771

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:19

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:10

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Aug 23, 2017

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Met340Val in exon 2 of CHD7: This variant is not expected to have clinical sig nificance because it has been identified in 0.63% (422/66716) of European chromo somes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs41305525). -

Jun 25, 2019

Genetic Services Laboratory, University of Chicago

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Dec 14, 2016

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Dec 27, 2012

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Sep 07, 2017

Institute for Genomic Medicine (IGM) Clinical Laboratory, Nationwide Children's Hospital

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

BS1, BS2, BP6; This alteration has an allele frequency that is greater than expected for the associated disease, was seen in a healthy adult where full penetrance of the disorder is expected at an early age, and was reported as a benign/likely benign alteration by a reputable source (ClinVar or other correspondence from a clinical testing laboratory). -

Jul 01, 2015

Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia

Significance:Benign

Review Status:flagged submission

Collection Method:clinical testing

- -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

not provided

Benign:5

Mar 03, 2015

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Oct 03, 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

- -

May 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

CHD7: BP4, BS2 -

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

CHARGE syndrome

Benign:2

Feb 04, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Sep 05, 2016

Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Inborn genetic diseases

Benign:1

Nov 23, 2018

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. -

Hypogonadotropic hypogonadism 5 with or without anosmia

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.055

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Uncertain

0.010

CADD

Benign

(source)

DANN

Benign

0.94

DEOGEN2

Benign

0.12

T;.;.

Eigen

Benign

-0.18

Eigen_PC

Benign

0.017

FATHMM_MKL

Uncertain

0.78

LIST_S2

Benign

0.85

T;T;D

M_CAP

Benign

0.034

MetaRNN

Benign

0.0083

T;T;T

MetaSVM

Benign

-0.66

MutationAssessor

Benign

0.81

L;L;L

PhyloP100

4.8

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-0.42

N;N;N

REVEL

Uncertain

0.32

Sift

Benign

0.080

T;T;T

Sift4G

Benign

0.55

T;T;T

Polyphen

0.0

B;.;.

Vest4

0.60

MVP

0.98

MPC

0.10

ClinPred

0.010

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.22

gMVP

0.44

Mutation Taster

=96/4

polymorphism

(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