rs755340969

Positions:

chr8-60741914-A-G

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP4BS2

The NM_017780.4(CHD7):c.482A>G(p.Gln161Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000273 in 1,612,448 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000028 ( 0 hom. )

Consequence

CHD7
NM_017780.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.22

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 -4 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.

BP4

Computational evidence support a benign effect (MetaRNN=0.31660935).

BS2

High AC in GnomAdExome4 at 41 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CHD7	NM_017780.4 linkuse as main transcript	c.482A>G	p.Gln161Arg	missense_variant	2/38	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.482A>G	p.Gln161Arg	missense_variant	2/38	5	NM_017780.4	ENSP00000392028	P1	Q9P2D1-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152116

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000369

AC:

AN:

243964

Hom.:

AF XY:

0.0000377

AC XY:

AN XY:

132798

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000879

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000455

Gnomad OTH exome

AF:

0.000169

GnomAD4 exome

AF:

0.0000281

AC:

AN:

1460332

Hom.:

Cov.:

AF XY:

0.0000275

AC XY:

AN XY:

726376

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000899

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000306

Gnomad4 OTH exome

AF:

0.0000498

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152116

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74288

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ExAC

AF:

0.0000248

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

CHARGE syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 06, 2018

This sequence change replaces glutamine with arginine at codon 161 of the CHD7 protein (p.Gln161Arg). The glutamine residue is highly conserved and there is a small physicochemical difference between glutamine and arginine. This variant is present in population databases (rs755340969, ExAC 0.009%). This variant has not been reported in the literature in individuals with CHD7-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Benign

-0.020

BayesDel_noAF

Uncertain

-0.070

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.19

T;.;.

Eigen

Uncertain

0.29

Eigen_PC

Uncertain

0.39

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.80

T;T;T

M_CAP

Uncertain

0.27

MetaRNN

Benign

0.32

T;T;T

MetaSVM

Uncertain

-0.25

MutationAssessor

Benign

2.0

M;M;M

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-0.58

N;N;N

REVEL

Benign

0.20

Sift

Uncertain

0.010

D;D;D

Sift4G

Benign

0.16

T;D;T

Polyphen

0.78

P;.;.

Vest4

0.44

MutPred

0.12

Gain of MoRF binding (P = 0.0166);Gain of MoRF binding (P = 0.0166);Gain of MoRF binding (P = 0.0166);

MVP

0.83

MPC

0.13

ClinPred

0.17

GERP RS

5.2

Varity_R

0.17

gMVP

0.41

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