rs41312172

chr8-60853007-A-Gchr8-60853007-A-T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_017780.4(CHD7):c.6282A>G(p.Gly2094=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00668 in 1,613,962 control chromosomes in the GnomAD database, including 36 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. G2094G) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.0047 (5 hom., cov: 32)
  • Exomes 𝑓: 0.0069 (31 hom.)
• Consequence: CHD7 NM_017780.4 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:14
• Conservation: PhyloP100: -0.808

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]

ACMG classification

Verdict is Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 8-60853007-A-G is Benign according to our data. Variant chr8-60853007-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 95803.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-60853007-A-G is described in Lovd as [Likely_benign]. Variant chr8-60853007-A-G is described in Lovd as [Benign].
• BP7: Synonymous conserved (PhyloP=-0.808 with no splicing effect.
• BS1: Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.00466 (710/152250) while in subpopulation AMR AF= 0.00916 (140/15290). AF 95% confidence interval is 0.00792. There are 5 homozygotes in gnomad4. There are 342 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd at 710 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CHD7	NM_017780.4	c.6282A>G	p.Gly2094=	synonymous_variant	31/38	ENST00000423902.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CHD7	ENST00000423902.7	c.6282A>G	p.Gly2094=	synonymous_variant	31/38	5	NM_017780.4	P1
CHD7	ENST00000524602.5	c.1717-9222A>G		intron_variant		1
CHD7	ENST00000695853.1	c.6282A>G	p.Gly2094=	synonymous_variant, NMD_transcript_variant	31/37

Frequencies

GnomAD3 genomes AF: 0.00467 AC: 710 AN: 152132 Hom.: 5 Cov.: 32

Gnomad AFR AF: 0.00118

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00917

Gnomad ASJ AF: 0.000577

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00187

Gnomad FIN AF: 0.00122

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00719

Gnomad OTH AF: 0.00382

GnomAD3 exomes AF: 0.00436 AC: 1087 AN: 249154 Hom.: 4 AF XY: 0.00456 AC XY: 617 AN XY: 135170

Gnomad AFR exome AF: 0.00129

Gnomad AMR exome AF: 0.00336

Gnomad ASJ exome AF: 0.000298

Gnomad EAS exome AF: 0.0000556

Gnomad SAS exome AF: 0.00212

Gnomad FIN exome AF: 0.00149

Gnomad NFE exome AF: 0.00732

Gnomad OTH exome AF: 0.00397

GnomAD4 exome AF: 0.00689 AC: 10066 AN: 1461712 Hom.: 31 Cov.: 32 AF XY: 0.00676 AC XY: 4917 AN XY: 727138

Gnomad4 AFR exome AF: 0.000896

Gnomad4 AMR exome AF: 0.00311

Gnomad4 ASJ exome AF: 0.000574

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00211

Gnomad4 FIN exome AF: 0.00148

Gnomad4 NFE exome AF: 0.00827

Gnomad4 OTH exome AF: 0.00704

GnomAD4 genome AF: 0.00466 AC: 710 AN: 152250 Hom.: 5 Cov.: 32 AF XY: 0.00459 AC XY: 342 AN XY: 74446

Gnomad4 AFR AF: 0.00118

Gnomad4 AMR AF: 0.00916

Gnomad4 ASJ AF: 0.000577

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00187

Gnomad4 FIN AF: 0.00122

Gnomad4 NFE AF: 0.00719

Gnomad4 OTH AF: 0.00378

Alfa AF: 0.00511 Hom.: 3

Bravo AF: 0.00478

Asia WGS AF: 0.000577 AC: 2 AN: 3478

EpiCase AF: 0.00791

EpiControl AF: 0.00699

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:14

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:7

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	May 03, 2017	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Feb 08, 2013	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Aug 23, 2017	p.Gly2094Gly in exon 31 of CHD7: This variant is not expected to have clinical s ignificance because it does not alter an amino acid residue, is not located with in the splice consensus sequence, and has been identified in 0.65% (432/66718) o f European chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.br oadinstitute.org; dbSNP rs41312172). -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Feb 11, 2015	- -

not provided Benign:3

Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 2015	- -
Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Mar 01, 2024	CHD7: BP4, BP7, BS1, BS2 -

CHARGE syndrome Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 29, 2024

- -

Inborn genetic diseases Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 09, 2015

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

CHARGE syndrome;C3552553:Hypogonadotropic hypogonadism 5 with or without anosmia Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Jul 26, 2021

- -

Hypogonadotropic hypogonadism 5 with or without anosmia Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
Cadd	Benign	1.3
Dann	Benign	0.52
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2

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

Other links and lift over

dbSNP: rs41312172; hg19: chr8-61765566;