chr11-77172794-AG-A

Position:

• chr11-77172794-AG-A

Variant summary

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

The NM_000260.4(MYO7A):​c.1845del​(p.Lys615AsnfsTer7) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 33)
• Consequence: MYO7A NM_000260.4 frameshift
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 1.99

Genes affected

MYO7A (HGNC:7606): (myosin VIIA) This gene is a member of the myosin gene family. Myosins are mechanochemical proteins characterized by the presence of a motor domain, an actin-binding domain, a neck domain that interacts with other proteins, and a tail domain that serves as an anchor. This gene encodes an unconventional myosin with a very short tail. Defects in this gene are associated with the mouse shaker-1 phenotype and the human Usher syndrome 1B which are characterized by deafness, reduced vestibular function, and (in human) retinal degeneration. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2008]

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 11-77172794-AG-A is Pathogenic according to our data. Variant chr11-77172794-AG-A is described in ClinVar as [Pathogenic]. Clinvar id is 218192.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr11-77172794-AG-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYO7A	NM_000260.4	c.1845del	p.Lys615AsnfsTer7	frameshift_variant	16/49	ENST00000409709.9	NP_000251.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYO7A	ENST00000409709.9	c.1845del	p.Lys615AsnfsTer7	frameshift_variant	16/49	1	NM_000260.4	ENSP00000386331
MYO7A	ENST00000458637.6	c.1845del	p.Lys615AsnfsTer7	frameshift_variant	16/49	1		ENSP00000392185	P1
MYO7A	ENST00000409619.6	c.1812del	p.Lys604AsnfsTer7	frameshift_variant	17/50	1		ENSP00000386635
MYO7A	ENST00000669443.1	c.209del	p.Lys70AsnfsTer7	frameshift_variant	3/3			ENSP00000499530

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Usher syndrome type 1 Pathogenic:1

Pathogenic, no assertion criteria provided

research

Centre de Biotechnologie de Sfax, Université de Sfax

Apr 01, 2015

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Computational scores

Source: dbNSFP v4.3

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs886037762; hg19: chr11-76883840;