11-77142783-C-A

Position:

chr11-77142783-C-A

Variant summary

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

The NM_000260.4(MYO7A):c.93C>A(p.Cys31*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000286 in 1,610,724 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 (★★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

MYO7A
NM_000260.4 stop_gained

Scores

Clinical Significance

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

Conservation

PhyloP100: -0.730

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:

MYO7A (HGNC:):

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 does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 257 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 11-77142783-C-A is Pathogenic according to our data. Variant chr11-77142783-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 11859.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-77142783-C-A is described in Lovd as [Pathogenic]. Variant chr11-77142783-C-A is described in Lovd as [Pathogenic]. Variant chr11-77142783-C-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYO7A	NM_000260.4 linkuse as main transcript	c.93C>A	p.Cys31*	stop_gained	3/49	ENST00000409709.9	NP_000251.3	Q13402-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
MYO7A	ENST00000409709.9 linkuse as main transcript	c.93C>A	p.Cys31*	stop_gained	3/49	1	NM_000260.4	ENSP00000386331.3	Q13402-1
MYO7A	ENST00000458637.6 linkuse as main transcript	c.93C>A	p.Cys31*	stop_gained	3/49	1		ENSP00000392185.2	Q13402-2
MYO7A	ENST00000409619.6 linkuse as main transcript	c.60C>A	p.Cys20*	stop_gained	4/50	1		ENSP00000386635.2	Q13402-8
MYO7A	ENST00000660626.1 linkuse as main transcript	c.183C>A	p.Cys61*	stop_gained	2/2			ENSP00000499401.1	A0A590UJG0

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152140

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000372

AC:

AN:

242144

Hom.:

AF XY:

0.0000456

AC XY:

AN XY:

131458

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:

0.0000819

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000302

AC:

AN:

1458584

Hom.:

Cov.:

AF XY:

0.0000359

AC XY:

AN XY:

725088

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.0000188

Gnomad4 NFE exome

AF:

0.0000351

Gnomad4 OTH exome

AF:

0.0000664

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152140

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74312

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.0000413

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Usher syndrome type 1B

Pathogenic:2

Pathogenic, no assertion criteria provided	literature only	OMIM	Jan 01, 1999	- -
Pathogenic, no assertion criteria provided	clinical testing	Natera, Inc.	Sep 16, 2020	- -

not provided

Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 04, 2024	This sequence change creates a premature translational stop signal (p.Cys31*) 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 (rs35689081, gnomAD 0.008%). This premature translational stop signal has been observed in individuals with Usher syndrome (PMID: 8900236, 10094549, 19074810, 27957503). It is commonly reported in individuals of Danish ancestry (PMID: 27957503). ClinVar contains an entry for this variant (Variation ID: 11859). For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Sep 19, 2023	Observed in the heterozygous state in an individual with Usher syndrome in published literature (Weston et al., 1996; Janecke et al., 1999; Jacobson et al., 2009); 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: 27957503, 25525159, 10094549, 20544672, 12112664, 28731162, 24199935, 8900236, 19074810, 25333064, 23770805, 30303587, 31266775, 34948090, 30718709) -

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

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Counsyl

Mar 22, 2017

- -

Hearing loss, autosomal recessive

Pathogenic:1

Likely pathogenic, no assertion criteria provided

research

University of Washington Center for Mendelian Genomics, University of Washington

- -

Rare genetic deafness

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Aug 03, 2017

The p.Cys31X variant in MYO7A has been reported in at least 9 individuals with U sher syndrome type I, many of whom were either homozygous for this variant or co mpound heterozygous with a second pathogenic variant (Weston 1996, Janecke 1999, Jacobson 2008, Tranebj?rg 2011). It has been identified in 10/123920 European c hromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstit ute.org/; dbSNP rs35689081); this frequency in the general population is consist ent with a carrier frequency for autosomal recessive Usher syndrome. This nonsen se variant leads to a premature stop codon at position 31, 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 based upon its predicted impact and biallelic presence in previously reported affected ind ividuals. -

Retinitis pigmentosa

Pathogenic:1

Pathogenic, no assertion criteria provided

research

Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet

Apr 01, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.28

BayesDel_noAF

Pathogenic

0.36

CADD

Pathogenic

DANN

Uncertain

0.98

Eigen

Benign

-0.24

Eigen_PC

Benign

-0.63

FATHMM_MKL

Benign

0.26

Vest4

0.85

GERP RS

-9.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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

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