8-60852177-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BS1_SupportingBS2

The NM_017780.4(CHD7):c.5824C>T(p.Arg1942Trp) variant causes a missense change. The variant allele was found at a frequency of 0.0000539 in 1,613,750 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 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000056 ( 0 hom. )

Consequence

CHD7
NM_017780.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:1

Conservation

PhyloP100: 4.96

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BS1

Variant frequency is greater than expected in population nfe. gnomad4_exome allele frequency = 0.0000561 (82/1461568) while in subpopulation NFE AF= 0.0000657 (73/1111860). AF 95% confidence interval is 0.0000534. There are 0 homozygotes in gnomad4_exome. There are 40 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHD7	NM_017780.4 link	c.5824C>T	p.Arg1942Trp	missense_variant	Exon 29 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.5824C>T	p.Arg1942Trp	missense_variant	Exon 29 of 38	5	NM_017780.4	ENSP00000392028.1	Q9P2D1-1
CHD7	ENST00000524602.5 link	c.1717-10052C>T		intron_variant	Intron 2 of 4	1		ENSP00000437061.1	Q9P2D1-4
CHD7	ENST00000527921.1 link	n.315C>T		non_coding_transcript_exon_variant	Exon 4 of 5	4
CHD7	ENST00000695853.1 link	n.5824C>T		non_coding_transcript_exon_variant	Exon 29 of 37			ENSP00000512218.1	A0A8Q3WKT9

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000323

AC:

AN:

248056

Hom.:

AF XY:

0.0000371

AC XY:

AN XY:

134936

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000199

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000446

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.0000561

AC:

AN:

1461568

Hom.:

Cov.:

AF XY:

0.0000550

AC XY:

AN XY:

727076

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.000153

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000657

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74342

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000882

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000331

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Feb 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

CHD7: PP3 -

Sep 14, 2017

Eurofins Ntd Llc (ga)

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

CHARGE syndrome

Uncertain:1Benign:1

Jan 06, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

May 25, 2020

Victorian Clinical Genetics Services, Murdoch Childrens Research Institute

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Based on the classification scheme VCGS_Germline_v1.1.1, this variant is classified as a 3C-VUS. Following criteria are met: 0102 - Loss-of-function is a known mechanism of disease for this gene. (N) 0107 - This gene is known to be associated with autosomal dominant disease. (N) 0200 - Variant is predicted to result in a missense amino acid change from arginine to tryptophan, exon 29. (N) 0251 - Variant is heterozygous. (N) 0302 - Variant is present in gnomAD <0.001 for a dominant condition. Overall frequency: 0.003%, 8 Het, 0 Hom (subpopulation Ashkenazi Jewish: 0.02%, 2 Het). (P) 0309 - An alternative amino acid change at the same position has been observed in gnomAD: p.(Arg1942Gln) (0.0008%, 1 het). Note: other changes also seen in the surrounding arginine residues, a string of five arginine residues . (N) 0502 - Missense variant with conflicting in silico predictions and/or uninformative conservation. Only 1/4 in silico analyses damaging, glycine observed in sheep no changes in mammals and major amino acid change. (N) 0603 - Missense variant in a region that is highly intolerant to missense variation (high constraint region) (P) 0705 - No comparable variants have previous evidence for pathogenicity. (N) 0804 - Variant is absent in the population / or present in the population at <0.001 and has previously been described as variant of uncertain significance in multiple independent cases with consistent phenotype. ClinVar: 3x submitted as a VUS (1x Neurodevelopmental disorder, 1x CHARGE, 1x Not provided). (N) 0905 - No segregation evidence has been identified for this variant. (N) 1007 - No published functional evidence has been identified for this variant. (N) 1208 - Inheritance information for this variant is not currently available. (N) Legend: (P) - Pathogenic, (N) - Neutral, (B) - Benign -

Inborn genetic diseases

Uncertain:1

Aug 26, 2018

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.R1942W variant (also known as c.5824C>T), located in coding exon 28 of the CHD7 gene, results from a C to T substitution at nucleotide position 5824. The arginine at codon 1942 is replaced by tryptophan, an amino acid with dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on available evidence to date, the clinical significance of this variant remains unclear. -

Amenorrhea

Uncertain:1

Mar 08, 2021

Yale Center for Mendelian Genomics, Yale University

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: literature only

- -

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

Uncertain:1

Apr 01, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.70

BayesDel_addAF

Uncertain

0.070

BayesDel_noAF

Uncertain

-0.010

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.16

Eigen

Pathogenic

0.71

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.95

M_CAP

Uncertain

0.23

MetaRNN

Uncertain

0.50

MetaSVM

Uncertain

0.17

MutationAssessor

Benign

0.81

PrimateAI

Pathogenic

0.87

PROVEAN

Benign

-0.31

REVEL

Uncertain

0.41

Sift

Benign

0.11

Sift4G

Benign

0.21

Polyphen

1.0

Vest4

0.58

MutPred

0.27

Loss of glycosylation at P1944 (P = 0.0928);

MVP

0.76

MPC

1.7

ClinPred

0.35

GERP RS

5.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.15

gMVP

0.62

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