rs4301480

chr8-60796500-G-A

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_017780.4(CHD7):c.2238+1373G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.838 in 152,192 control chromosomes in the GnomAD database, including 53,909 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.84 (53909 hom., cov: 32)
• Consequence: CHD7 NM_017780.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.631

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 -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.924 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CHD7	NM_017780.4	c.2238+1373G>A		intron_variant		ENST00000423902.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CHD7	ENST00000423902.7	c.2238+1373G>A		intron_variant		5	NM_017780.4	P1

Frequencies

GnomAD3 genomes AF: 0.838 AC: 127500 AN: 152074 Hom.: 53863 Cov.: 32

Gnomad AFR AF: 0.932

Gnomad AMI AF: 0.730

Gnomad AMR AF: 0.830

Gnomad ASJ AF: 0.764

Gnomad EAS AF: 0.943

Gnomad SAS AF: 0.918

Gnomad FIN AF: 0.833

Gnomad MID AF: 0.769

Gnomad NFE AF: 0.776

Gnomad OTH AF: 0.814

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.838 AC: 127603 AN: 152192 Hom.: 53909 Cov.: 32 AF XY: 0.845 AC XY: 62868 AN XY: 74398

Gnomad4 AFR AF: 0.932

Gnomad4 AMR AF: 0.830

Gnomad4 ASJ AF: 0.764

Gnomad4 EAS AF: 0.943

Gnomad4 SAS AF: 0.918

Gnomad4 FIN AF: 0.833

Gnomad4 NFE AF: 0.776

Gnomad4 OTH AF: 0.816

Alfa AF: 0.810 Hom.: 6252

Bravo AF: 0.836

Asia WGS AF: 0.930 AC: 3223 AN: 3466

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
Cadd	Benign	3.0
Dann	Benign	0.098

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: rs4301480; hg19: chr8-61709059;