11-77179873-C-T

Position:

chr11-77179873-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_000260.4(MYO7A):c.2506C>T(p.Arg836Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000343 in 1,540,992 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 34)

Exomes 𝑓: 0.00034 ( 1 hom. )

Consequence

MYO7A
NM_000260.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 3.27

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 Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.030988306).

BP6

Variant 11-77179873-C-T is Benign according to our data. Variant chr11-77179873-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 229003.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=5}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYO7A	NM_000260.4 linkuse as main transcript	c.2506C>T	p.Arg836Cys	missense_variant	21/49	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.2506C>T	p.Arg836Cys	missense_variant	21/49	1	NM_000260.4	ENSP00000386331.3	Q13402-1
MYO7A	ENST00000458637.6 linkuse as main transcript	c.2506C>T	p.Arg836Cys	missense_variant	21/49	1		ENSP00000392185.2	Q13402-2
MYO7A	ENST00000409619.6 linkuse as main transcript	c.2473C>T	p.Arg825Cys	missense_variant	22/50	1		ENSP00000386635.2	Q13402-8
MYO7A	ENST00000458169.2 linkuse as main transcript	c.49C>T	p.Arg17Cys	missense_variant	1/29	1		ENSP00000417017.2	H7C4D8
MYO7A	ENST00000670577.1 linkuse as main transcript	n.346C>T		non_coding_transcript_exon_variant	4/32			ENSP00000499323.1	A0A590UJ94

Frequencies

GnomAD3 genomes

AF:

0.000388

AC:

AN:

152254

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000265

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00605

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000382

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000607

AC:

AN:

138384

Hom.:

AF XY:

0.000586

AC XY:

AN XY:

75026

show subpopulations

Gnomad AFR exome

AF:

0.000147

Gnomad AMR exome

AF:

0.000327

Gnomad ASJ exome

AF:

0.00449

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000177

Gnomad FIN exome

AF:

0.000113

Gnomad NFE exome

AF:

0.000513

Gnomad OTH exome

AF:

0.00145

GnomAD4 exome

AF:

0.000338

AC:

469

AN:

1388620

Hom.:

Cov.:

AF XY:

0.000369

AC XY:

253

AN XY:

685284

show subpopulations

Gnomad4 AFR exome

AF:

0.000158

Gnomad4 AMR exome

AF:

0.000168

Gnomad4 ASJ exome

AF:

0.00509

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000101

Gnomad4 FIN exome

AF:

0.000100

Gnomad4 NFE exome

AF:

0.000255

Gnomad4 OTH exome

AF:

0.000657

GnomAD4 genome

AF:

0.000387

AC:

AN:

152372

Hom.:

Cov.:

AF XY:

0.000362

AC XY:

AN XY:

74514

show subpopulations

Gnomad4 AFR

AF:

0.000264

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00605

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000382

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.00112

Hom.:

Bravo

AF:

0.000446

ESP6500AA

AF:

0.000273

AC:

ESP6500EA

AF:

0.000546

AC:

ExAC

AF:

0.000306

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:9Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:5Benign:1

Uncertain significance, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Uncertain significance, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	May 06, 2024	In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 34391192) -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 30, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jun 01, 2022	MYO7A: PP3 -
Uncertain significance, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Apr 03, 2016

The p.Arg836Cys variant in MYO7A has not been previously reported in individuals with hearing loss, but has been identified in 0.3% (14/4106) of European chromo somes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs375510570). Although this variant has been seen in the general populati on, its frequency is not high enough to rule out a pathogenic role. Computationa l prediction tools and conservation analyses suggest the variant may impact the protein, though this data is not sufficient to determine pathogenicity. In summa ry, the clinical significance of the p.Arg836Cys variant is uncertain. -

Autosomal recessive nonsyndromic hearing loss 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 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. -

Usher syndrome type 1B

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Apr 16, 2020

- -

Usher syndrome type 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

Autosomal dominant nonsyndromic hearing loss 11

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.039

BayesDel_noAF

Uncertain

0.070

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.77

D;T;.;.;.;T

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.61

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

D;D;D;D;D;D

M_CAP

Pathogenic

0.32

MetaRNN

Benign

0.031

T;T;T;T;T;T

MetaSVM

Uncertain

0.77

MutationAssessor

Pathogenic

3.2

M;.;M;.;.;.

PrimateAI

Pathogenic

0.84

PROVEAN

Pathogenic

-5.7

D;.;D;D;.;D

REVEL

Uncertain

0.60

Sift

Pathogenic

0.0

D;.;D;D;.;D

Sift4G

Pathogenic

0.0010

D;D;D;D;.;D

Polyphen

1.0

D;.;.;.;.;.

Vest4

0.77

MVP

0.94

MPC

0.50

ClinPred

0.095

GERP RS

4.4

Varity_R

0.81

gMVP

0.64

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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