NM_017780.4:c.3299G>A

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 3P and 9B. PM1PP3BP6BS1BS2

The NM_017780.4(CHD7):c.3299G>A(p.Arg1100His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000049 in 1,613,690 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000049 ( 0 hom. )

Consequence

CHD7
NM_017780.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 9.60

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 -6 ACMG points.

PM1

In a domain Helicase ATP-binding (size 174) in uniprot entity CHD7_HUMAN there are 15 pathogenic changes around while only 1 benign (94%) in NM_017780.4

PP3

MetaRNN computational evidence supports a deleterious effect, 0.753

BP6

Variant 8-60823937-G-A is Benign according to our data. Variant chr8-60823937-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 363459.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.0000526 (8/152108) while in subpopulation AMR AF= 0.000131 (2/15258). AF 95% confidence interval is 0.0000376. There are 0 homozygotes in gnomad4. There are 4 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHD7	NM_017780.4 link	c.3299G>A	p.Arg1100His	missense_variant	Exon 13 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.3299G>A	p.Arg1100His	missense_variant	Exon 13 of 38	5	NM_017780.4	ENSP00000392028.1	Q9P2D1-1
CHD7	ENST00000524602.5 link	c.1717-38292G>A		intron_variant	Intron 2 of 4	1		ENSP00000437061.1	Q9P2D1-4
CHD7	ENST00000525508.1 link	c.3299G>A	p.Arg1100His	missense_variant	Exon 12 of 12	5		ENSP00000436027.1	Q9P2D1-2
CHD7	ENST00000695853.1 link	n.3299G>A		non_coding_transcript_exon_variant	Exon 13 of 37			ENSP00000512218.1	A0A8Q3WKT9

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152108

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000562

AC:

AN:

249126

Hom.:

AF XY:

0.0000518

AC XY:

AN XY:

135146

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

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:

0.0000620

Gnomad OTH exome

AF:

0.000331

GnomAD4 exome

AF:

0.0000486

AC:

AN:

1461582

Hom.:

Cov.:

AF XY:

0.0000385

AC XY:

AN XY:

727082

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000224

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:

0.0000522

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152108

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74302

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000100

Hom.:

Bravo

AF:

0.0000642

ExAC

AF:

0.0000661

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

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

Uncertain:1

May 10, 2022

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Hypogonadotropic hypogonadism 5 with or without anosmia

Uncertain:1

Jan 13, 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

Nov 21, 2024

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

Uncertain

0.44

BayesDel_addAF

Pathogenic

0.21

BayesDel_noAF

Pathogenic

0.33

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.80

D;.

Eigen

Pathogenic

0.70

Eigen_PC

Pathogenic

0.78

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.97

D;D

M_CAP

Pathogenic

0.35

MetaRNN

Pathogenic

0.75

D;D

MetaSVM

Uncertain

0.73

MutationAssessor

Benign

0.96

L;L

PrimateAI

Pathogenic

0.81

PROVEAN

Uncertain

-4.2

D;D

REVEL

Pathogenic

0.85

Sift

Uncertain

0.014

D;D

Sift4G

Uncertain

0.0030

D;D

Polyphen

0.98

D;D

Vest4

0.64

MutPred

0.73

Gain of catalytic residue at C1101 (P = 0.0795);Gain of catalytic residue at C1101 (P = 0.0795);

MVP

0.95

MPC

1.9

ClinPred

0.66

GERP RS

5.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.58

gMVP

0.84

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