chr8-60853198-C-T

Variant names:

• chr8-60853198-C-T
• rs376056567
• NM_017780.4:c.6473C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_017780.4(CHD7):​c.6473C>T​(p.Ser2158Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,613,770 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000033 (1 hom., cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: CHD7 NM_017780.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.14
• Publications: 1 publications found

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 Gene-Disease associations (from GenCC):

• CHARGE syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, PanelApp Australia, Broad Center for Mendelian Genomics, ClinGen, G2P
• hypogonadotropic hypogonadism 5 with or without anosmia

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• hypogonadotropic hypogonadism

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Kallmann syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Omenn syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.12239671).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017780.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CHD7	NM_017780.4	MANE Select	c.6473C>T	p.Ser2158Leu	missense	Exon 31 of 38	NP_060250.2
	CHD7	NM_001316690.1		c.1717-9031C>T		intron	N/A	NP_001303619.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CHD7	ENST00000423902.7	TSL:5 MANE Select	c.6473C>T	p.Ser2158Leu	missense	Exon 31 of 38	ENSP00000392028.1
	CHD7	ENST00000524602.5	TSL:1	c.1717-9031C>T		intron	N/A	ENSP00000437061.1
	CHD7	ENST00000933299.1		c.6509C>T	p.Ser2170Leu	missense	Exon 31 of 38	ENSP00000603358.1

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152148 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.000121

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000402 AC: 1 AN: 248706 AF XY: 0.00000741

Gnomad AFR exome AF: 0.0000649

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461622 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727092

African (AFR) AF: 0.0000299 AC: 1 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26124

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86232

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53388

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111846

Other (OTH) AF: 0.00 AC: 0 AN: 60372

GnomAD4 genome AF: 0.0000329 AC: 5 AN: 152148 Hom.: 1 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74324

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.000121 AC: 5 AN: 41420

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10600

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68032

Other (OTH) AF: 0.00 AC: 0 AN: 2092

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.0136242), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000567

ESP6500AA AF: 0.000266 AC: 1

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.00000828 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.079
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.38
CADD	Benign	18
DANN	Uncertain	0.97
DEOGEN2	Uncertain	0.42	T
Eigen	Benign	-0.51
Eigen_PC	Benign	-0.46
FATHMM_MKL	Uncertain	0.76	D
LIST_S2	Benign	0.82	T
M_CAP	Uncertain	0.096	D
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-0.80	T
MutationAssessor	Benign	0.34	N
PhyloP100		2.1
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-1.9	N
REVEL	Benign	0.15
Sift	Benign	0.054	T
Sift4G	Benign	0.11	T
Polyphen		0.020	B
Vest4		0.12
MVP		0.59
MPC		0.14
ClinPred		0.092	T
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.068
gMVP		0.23
Mutation Taster		=84/16	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs376056567; hg19: chr8-61765757; COSMIC: COSV71108794; COSMIC: COSV71108794;