8-60852177-C-T

Position:

chr8-60852177-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP2BS2

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 -3 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), CHD7. . Gene score misZ 3.2193 (greater than the threshold 3.09). Trascript score misZ 3.9401 (greater than threshold 3.09). GenCC has associacion of gene with Kallmann syndrome, hypogonadotropic hypogonadism 5 with or without anosmia, CHARGE syndrome, hypogonadotropic hypogonadism, Omenn syndrome.

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CHD7	NM_017780.4 linkuse as main transcript	c.5824C>T	p.Arg1942Trp	missense_variant	29/38	ENST00000423902.7	NP_060250.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CHD7	ENST00000423902.7 linkuse as main transcript	c.5824C>T	p.Arg1942Trp	missense_variant	29/38	5	NM_017780.4	ENSP00000392028	P1	Q9P2D1-1
CHD7	ENST00000524602.5 linkuse as main transcript	c.1717-10052C>T		intron_variant		1		ENSP00000437061		Q9P2D1-4
CHD7	ENST00000527921.1 linkuse as main transcript	n.315C>T		non_coding_transcript_exon_variant	4/5	4
CHD7	ENST00000695853.1 linkuse as main transcript	c.5824C>T	p.Arg1942Trp	missense_variant, NMD_transcript_variant	29/37			ENSP00000512218

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

Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Feb 01, 2023	CHD7: PP3 -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Sep 14, 2017	- -

CHARGE syndrome

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Victorian Clinical Genetics Services, Murdoch Childrens Research Institute	May 25, 2020	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 -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 30, 2023	- -

Amenorrhea

Uncertain:1

Uncertain significance, no assertion criteria provided

literature only

Yale Center for Mendelian Genomics, Yale University

Mar 08, 2021

- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 26, 2018

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. -

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

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Apr 14, 2022

- -

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

MutationTaster

Benign

1.0

D;D;D

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