chr8-60830403-G-GAAGAAACTATT

Position:

• chr8-60830403-G-GAAGAAACTATT

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_017780.4(CHD7):​c.3606_3616dup​(p.Ile1206LysfsTer9) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CHD7 NM_017780.4 frameshift
• Clinical Significance: Pathogenic/Likely pathogenic no assertion criteria provided P:2
• Conservation: PhyloP100: 9.10

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 Pathogenic. Variant got 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 8-60830403-G-GAAGAAACTATT is Pathogenic according to our data. Variant chr8-60830403-G-GAAGAAACTATT is described in ClinVar as [Likely_pathogenic]. Clinvar id is 488367.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CHD7	NM_017780.4	c.3606_3616dup	p.Ile1206LysfsTer9	frameshift_variant	15/38	ENST00000423902.7	NP_060250.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CHD7	ENST00000423902.7	c.3606_3616dup	p.Ile1206LysfsTer9	frameshift_variant	15/38	5	NM_017780.4	ENSP00000392028	P1
CHD7	ENST00000524602.5	c.1717-31824_1717-31814dup		intron_variant		1		ENSP00000437061
CHD7	ENST00000695853.1	c.3606_3616dup	p.Ile1206LysfsTer9	frameshift_variant, NMD_transcript_variant	15/37			ENSP00000512218

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:2

Revision: no assertion criteria provided

Submissions by phenotype

CHARGE syndrome Pathogenic:2

Pathogenic, no assertion criteria provided	research	Sbielas Lab-Department of Human Genetics University of Michigan, University of Michigan Medical School	Oct 27, 2017	- -
Likely pathogenic, no assertion criteria provided	research	University of Washington Center for Mendelian Genomics, University of Washington	-	- -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs1554599462; hg19: chr8-61742962;