rs121965085

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_000260.4(MYO7A):c.1996C>T(p.Arg666Ter) variant causes a stop gained change. The variant allele was found at a frequency of 0.0000124 in 1,612,732 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

MYO7A
NM_000260.4 stop_gained

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:8

Conservation

PhyloP100: 3.79

Variant links:

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]

MYO7A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 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 11-77174816-C-T is Pathogenic according to our data. Variant chr11-77174816-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 11860.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-77174816-C-T is described in Lovd as [Pathogenic]. Variant chr11-77174816-C-T is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYO7A	NM_000260.4 linkuse as main transcript	c.1996C>T	p.Arg666Ter	stop_gained	17/49	ENST00000409709.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYO7A	ENST00000409709.9 linkuse as main transcript	c.1996C>T	p.Arg666Ter	stop_gained	17/49	1	NM_000260.4		Q13402-1
MYO7A	ENST00000458637.6 linkuse as main transcript	c.1996C>T	p.Arg666Ter	stop_gained	17/49	1		P1	Q13402-2
MYO7A	ENST00000409619.6 linkuse as main transcript	c.1963C>T	p.Arg655Ter	stop_gained	18/50	1			Q13402-8
MYO7A	ENST00000409893.6 linkuse as main transcript	c.61C>T	p.Arg21Ter	stop_gained	1/11	5

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000163

AC:

AN:

246092

Hom.:

AF XY:

0.0000224

AC XY:

AN XY:

134046

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000360

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1460512

Hom.:

Cov.:

AF XY:

0.00000826

AC XY:

AN XY:

726434

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000126

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74352

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.0000349

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000166

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000595

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:3

Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Jan 26, 2023	Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; This variant is associated with the following publications: (PMID: 25525159, 31589614, 36240775, 21569298, 33576163, 32531858, 10094549, 27246798, 27957503, 35955564, 35440622, 12786748, 15660226, 15043528, 28075205) -
Pathogenic, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Nov 01, 2017	- -
Pathogenic, criteria provided, single submitter	clinical testing	Invitae	Dec 10, 2023	This sequence change creates a premature translational stop signal (p.Arg666*) in the MYO7A gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in MYO7A are known to be pathogenic (PMID: 8900236, 25404053). This variant is present in population databases (rs121965085, gnomAD 0.004%). This premature translational stop signal has been observed in individuals with autosomal recessive Usher syndrome (PMID: 10094549, 15660226, 21569298). ClinVar contains an entry for this variant (Variation ID: 11860). For these reasons, this variant has been classified as Pathogenic. -

Usher syndrome type 1B

Pathogenic:2

Pathogenic, no assertion criteria provided	clinical testing	Natera, Inc.	Jul 21, 2020	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	Mar 01, 2005	- -

Usher syndrome type 1;C1838701:Autosomal recessive nonsyndromic hearing loss 2

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Counsyl

Sep 01, 2017

- -

Usher syndrome type 1;C1832475:Autosomal dominant nonsyndromic hearing loss 11;C1838701:Autosomal recessive nonsyndromic hearing loss 2

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 08, 2021

- -

Rare genetic deafness

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Jan 15, 2014

The p.Arg666X variant in MYO7A has been reported in 4 individuals with Usher syn drome type I, 3 of whom carried a second MYO7A variant (Janecke 1999, Pennings 2 004, Ouyang 2005, Bonnet 2011). This variant has been identified in 4/110570 Eu ropean chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.bro adinstitute.org; dbSNP rs121965085), which is low enough to be consistent with a recessive carrier frequency. This nonsense variant leads to a premature termina tion codon at position 666, which is predicted to lead to a truncated or absent protein. In summary, this variant meets criteria to be classified as pathogenic for autosomal recessive Usher syndrome. ACMG/AMP criteria applied: PVS1, PM2. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.44

BayesDel_noAF

Pathogenic

0.50

Cadd

Pathogenic

Dann

Uncertain

1.0

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.50

FATHMM_MKL

Uncertain

0.82

MutationTaster

Benign

1.0

A;A;A;A

Vest4

0.93

GERP RS

3.1

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over