NM_017780.4:c.4795C>G

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM1BP4_ModerateBP6

The NM_017780.4(CHD7):c.4795C>G(p.Gln1599Glu) variant causes a missense change. The variant allele was found at a frequency of 0.0000137 in 1,461,644 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q1599R) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

CHD7
NM_017780.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 6.06

Publications

10 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: Likely_benign. The variant received -1 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 4 benign, 7 uncertain in NM_017780.4

BP4

Computational evidence support a benign effect (MetaRNN=0.19498801).

BP6

Variant 8-60841997-C-G is Benign according to our data. Variant chr8-60841997-C-G is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 1313796. Variant chr8-60841997-C-G is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 1313796. Variant chr8-60841997-C-G is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 1313796. Variant chr8-60841997-C-G is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 1313796. Variant chr8-60841997-C-G is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 1313796. Variant chr8-60841997-C-G is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 1313796. Variant chr8-60841997-C-G is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 1313796.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHD7	NM_017780.4 link	c.4795C>G	p.Gln1599Glu	missense_variant	Exon 21 of 38	ENST00000423902.7	NP_060250.2	Q9P2D1-1Q6ZWF9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CHD7	ENST00000423902.7 link	c.4795C>G	p.Gln1599Glu	missense_variant	Exon 21 of 38	5	NM_017780.4	ENSP00000392028.1	Q9P2D1-1
CHD7	ENST00000524602.5 link	c.1717-20232C>G		intron_variant	Intron 2 of 4	1		ENSP00000437061.1	Q9P2D1-4
CHD7	ENST00000695853.1 link	n.4795C>G		non_coding_transcript_exon_variant	Exon 21 of 37			ENSP00000512218.1	A0A8Q3WKT9

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000121

AC:

AN:

248200

AF XY:

0.0000149

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000267

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000137

AC:

AN:

1461644

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

727096

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86238

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53388

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000180

AC:

AN:

1111844

Other (OTH)

AF:

0.00

AC:

AN:

60374

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000135

Hom.:

Bravo

AF:

0.0000189

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.00000827

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Dec 31, 2020

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Not observed at a significant frequency in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

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

Uncertain:1

Apr 16, 2022

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

CHARGE syndrome

Benign:1

Aug 01, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Uncertain

0.053

BayesDel_noAF

Benign

-0.15

CADD

Benign

(source)

DANN

Benign

0.83

DEOGEN2

Benign

0.095

Eigen

Benign

0.13

Eigen_PC

Uncertain

0.32

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.92

M_CAP

Benign

0.044

MetaRNN

Benign

0.19

MetaSVM

Benign

-0.40

MutationAssessor

Benign

-0.41

PhyloP100

6.1

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-0.59

REVEL

Uncertain

0.34

Sift

Benign

0.71

Sift4G

Benign

0.69

Polyphen

0.073

Vest4

0.34

MutPred

0.28

Gain of helix (P = 0.0078);

MVP

0.84

MPC

0.99

ClinPred

0.21

GERP RS

5.6

Varity_R

0.15

gMVP

0.50

Mutation Taster

=25/75

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over