rs371029653

Positions:

chr11-77179856-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The ENST00000409709.9(MYO7A):c.2489G>A(p.Arg830His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000863 in 1,541,754 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R830C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000089 ( 0 hom. )

Consequence

MYO7A
ENST00000409709.9 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2U:9B:3

Conservation

PhyloP100: 9.99

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 Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.885

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYO7A	NM_000260.4 linkuse as main transcript	c.2489G>A	p.Arg830His	missense_variant	21/49	ENST00000409709.9	NP_000251.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYO7A	ENST00000409709.9 linkuse as main transcript	c.2489G>A	p.Arg830His	missense_variant	21/49	1	NM_000260.4	ENSP00000386331		Q13402-1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152244

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:

0.000132

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000934

AC:

AN:

139138

Hom.:

AF XY:

0.0000929

AC XY:

AN XY:

75340

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000408

Gnomad ASJ exome

AF:

0.000121

Gnomad EAS exome

AF:

0.0000942

Gnomad SAS exome

AF:

0.0000885

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000132

Gnomad OTH exome

AF:

0.000241

GnomAD4 exome

AF:

0.0000892

AC:

124

AN:

1389510

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

685722

show subpopulations

Gnomad4 AFR exome

AF:

0.0000950

Gnomad4 AMR exome

AF:

0.0000280

Gnomad4 ASJ exome

AF:

0.000159

Gnomad4 EAS exome

AF:

0.0000840

Gnomad4 SAS exome

AF:

0.0000505

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000806

Gnomad4 OTH exome

AF:

0.000225

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152244

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74378

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:

0.000132

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000141

Hom.:

Bravo

AF:

0.000106

ESP6500AA

AF:

0.000272

AC:

ESP6500EA

AF:

0.000133

AC:

ExAC

AF:

0.0000446

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:2Uncertain:9Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Autosomal recessive nonsyndromic hearing loss 2

Pathogenic:1Uncertain:2

Pathogenic, criteria provided, single submitter	research	Laboratory of Prof. Karen Avraham, Tel Aviv University	Jun 03, 2024	Likely pathogenic by Deafness Variation Database and Pathogenic based on PMID: 26763877 -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 14, 2021	- -

not provided

Pathogenic:1Uncertain:2

Likely pathogenic, flagged submission	research	Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center	-	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Dec 07, 2020	In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; This variant is associated with the following publications: (PMID: 32884365, 27766948) -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Sep 01, 2022	This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 830 of the MYO7A protein (p.Arg830His). This variant is present in population databases (rs371029653, gnomAD 0.02%). This missense change has been observed in individual(s) with autosomal recessive hearing loss (PMID: 27766948). ClinVar contains an entry for this variant (Variation ID: 191024). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt MYO7A protein function. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Usher syndrome type 1

Uncertain:2Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 14, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center	Mar 29, 2024	- -

Autosomal dominant nonsyndromic hearing loss 11

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 14, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

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

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Counsyl

Apr 06, 2018

- -

Usher syndrome type 1B

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Jan 16, 2020

- -

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

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 31, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Pathogenic

0.28

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.46

T;T;.;.;.;D

Eigen

Pathogenic

0.95

Eigen_PC

Pathogenic

0.88

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

D;D;D;D;D;D

M_CAP

Pathogenic

0.81

MetaRNN

Pathogenic

0.89

D;D;D;D;D;D

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

3.6

H;.;H;.;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.73

PROVEAN

Pathogenic

-4.8

D;.;D;D;.;D

REVEL

Pathogenic

0.76

Sift

Pathogenic

0.0

D;.;D;D;.;D

Sift4G

Pathogenic

0.0010

D;D;D;D;.;D

Polyphen

1.0

D;.;.;.;.;.

Vest4

0.90

MVP

0.98

MPC

0.52

ClinPred

0.95

GERP RS

5.4

Varity_R

0.92

gMVP

0.74

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