NM_017780.4:c.8672A>G

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS1

The NM_017780.4(CHD7):c.8672A>G(p.Asn2891Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00029 in 1,613,530 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N2891T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00034 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00028 ( 1 hom. )

Consequence

CHD7
NM_017780.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:9

Conservation

PhyloP100: 5.03

Publications

3 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 -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.068583906).

BP6

Variant 8-60865611-A-G is Benign according to our data. Variant chr8-60865611-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 197042.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.000342 (52/152032) while in subpopulation AMR AF = 0.000719 (11/15298). AF 95% confidence interval is 0.000405. There are 0 homozygotes in GnomAd4. There are 24 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHD7	NM_017780.4 link	c.8672A>G	p.Asn2891Ser	missense_variant	Exon 38 of 38	ENST00000423902.7	NP_060250.2	Q9P2D1-1Q6ZWF9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHD7	ENST00000423902.7 link	c.8672A>G	p.Asn2891Ser	missense_variant	Exon 38 of 38	5	NM_017780.4	ENSP00000392028.1		Q9P2D1-1

Frequencies

GnomAD3 genomes

AF:

0.000342

AC:

AN:

151914

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000726

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000720

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:

0.000545

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000233

AC:

AN:

249090

AF XY:

0.000222

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000493

Gnomad ASJ exome

AF:

0.0000997

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000336

Gnomad OTH exome

AF:

0.000331

GnomAD4 exome

AF:

0.000285

AC:

416

AN:

1461498

Hom.:

Cov.:

AF XY:

0.000281

AC XY:

204

AN XY:

726988

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33478

American (AMR)

AF:

0.000581

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26118

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53392

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000327

AC:

364

AN:

1111698

Other (OTH)

AF:

0.000348

AC:

AN:

60368

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.476

Heterozygous variant carriers

110

138

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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:

0.000342

AC:

AN:

152032

Hom.:

Cov.:

AF XY:

0.000323

AC XY:

AN XY:

74324

show subpopulations

African (AFR)

AF:

0.0000724

AC:

AN:

41450

American (AMR)

AF:

0.000719

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4810

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10580

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000545

AC:

AN:

67934

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

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:

0.000320

Hom.:

Bravo

AF:

0.000359

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000356

AC:

ExAC

AF:

0.000215

AC:

EpiCase

AF:

0.000763

EpiControl

AF:

0.000711

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:9

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Benign:3

Feb 16, 2025

Laboratory of Genetics, Children's Clinical University Hospital Latvia

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 04, 2019

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.Asn2891Ser variant in CHD7 is classified as likely benign because it has b een identified in 0.05% (18/35364) of Latino chromosomes by gnomAD (http://gnoma d.broadinstitute.org). ACMG/AMP criteria applied: BS1. -

Feb 27, 2018

Eurofins Ntd Llc (ga)

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:2

Jul 22, 2019

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 33206719) -

Dec 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

CHD7: BS2 -

Hypogonadotropic hypogonadism 5 with or without anosmia

Uncertain:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

CHARGE syndrome

Benign:1

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Inborn genetic diseases

Benign:1

Sep 28, 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. -

CHD7-related disorder

Benign:1

Feb 11, 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). -

CHARGE syndrome;C3552553:Hypogonadotropic hypogonadism 5 with or without anosmia

Benign:1

Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant has not been reported in the literature but is present in the Genome Aggregation Database (Highest reported MAF 0.07% [11/15278]; https://gnomad.broadinstitute.org/variant/8-60865611-A-G?dataset=gnomad_r3). This variant is present in ClinVar, with several labs classifying this variant as Likely Benign or Benign (Variation ID: 197042). Evolutionary conservation suggests that this variant may impact the protein; computational prediction tools suggest that this variant may not impact the protein. In summary, data on this variant suggests that this variant does not cause disease but requires further evidence. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.056

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.24

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.51

D;.

Eigen

Benign

-0.084

Eigen_PC

Benign

0.10

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.91

D;D

M_CAP

Benign

0.066

MetaRNN

Benign

0.069

T;T

MetaSVM

Benign

-0.46

MutationAssessor

Benign

1.3

L;.

PhyloP100

5.0

PrimateAI

Uncertain

0.66

PROVEAN

Uncertain

-3.3

D;D

REVEL

Benign

0.070

Sift

Benign

0.068

T;T

Sift4G

Uncertain

0.047

D;T

Polyphen

0.024

B;.

Vest4

0.26

MVP

0.77

MPC

0.13

ClinPred

0.086

GERP RS

4.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.14

gMVP

0.61

Mutation Taster

=53/47

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

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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