rs747656448

Variant names:

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PM2PP3PP5_Very_Strong

The NM_000260.4(MYO7A):c.6487G>A(p.Gly2163Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000118 in 1,613,938 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 Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

MYO7A
NM_000260.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:9

Conservation

PhyloP100: 7.73

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 11 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.837

PP5

Variant 11-77213908-G-A is Pathogenic according to our data. Variant chr11-77213908-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 402267.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO7A	NM_000260.4 link	c.6487G>A	p.Gly2163Ser	missense_variant	Exon 48 of 49	ENST00000409709.9	NP_000251.3	Q13402-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYO7A	ENST00000409709.9 link	c.6487G>A	p.Gly2163Ser	missense_variant	Exon 48 of 49	1	NM_000260.4	ENSP00000386331.3	Q13402-1
MYO7A	ENST00000458637.6 link	c.6367G>A	p.Gly2123Ser	missense_variant	Exon 48 of 49	1		ENSP00000392185.2	Q13402-2
MYO7A	ENST00000409619.6 link	c.6340G>A	p.Gly2114Ser	missense_variant	Exon 49 of 50	1		ENSP00000386635.2	Q13402-8
MYO7A	ENST00000458169.2 link	c.3913G>A	p.Gly1305Ser	missense_variant	Exon 28 of 29	1		ENSP00000417017.2	H7C4D8
MYO7A	ENST00000670577.1 link	n.*1059G>A		non_coding_transcript_exon_variant	Exon 31 of 32			ENSP00000499323.1	A0A590UJ94
MYO7A	ENST00000670577.1 link	n.*1059G>A		3_prime_UTR_variant	Exon 31 of 32			ENSP00000499323.1	A0A590UJ94

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152242

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:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000241

AC:

AN:

249272

Hom.:

AF XY:

0.0000222

AC XY:

AN XY:

135226

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:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000442

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1461696

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

727128

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:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000126

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152242

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74374

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:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Autosomal recessive nonsyndromic hearing loss 2

Pathogenic:4

Oct 12, 2017

Counsyl

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

May 22, 2022

3billion, Medical Genetics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The variant is observed at an extremely low frequency in the gnomAD v2.1.1 dataset (total allele frequency: 0.002%). In silico tool predictions suggest damaging effect of the variant on gene or gene product (REVEL: 0.67; 3Cnet: 0.77). Same nucleotide change resulting in same amino acid change has been previously reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000402267). Therefore, this variant is classified as likely pathogenic according to the recommendation of ACMG/AMP guideline. -

Jun 04, 2016

Hereditary Research Laboratory, Bethlehem University

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: research

severe-profound -

Aug 01, 2020

King Laboratory, University of Washington

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

MYO7A c.6487G>A, p.G2163S alters a highly conserved residue of MYO7A. The variant is homozygous in 12 Palestinian children from 6 different families with severe to profound pre-lingual hearing loss (Abu Rayyan 2020). The variant is absent from 1300 Palestinian controls and present in 7/280682 alleles on gnomAD, all heterozygotes. -

not provided

Pathogenic:2

Oct 29, 2024

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Published functional studies demonstrate the p.(G2163S) variant disrupts MYO7A binding to adaptor protein harmonin, which impacts mechanotransduction of cadherin linkages between stererocilia and microvilli (PMID: 28660889); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; This variant is associated with the following publications: (PMID: 27460420, 19375528, 12786748, 24105371, 23770805, 26561413, 19888295, 21117948, 28451532, 23226338, 26226137, 30531642, 32747562, 31964843, 38711914, 38465142, 33528536, 10094549, 28660889) -

Jul 29, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 2163 of the MYO7A protein (p.Gly2163Ser). This variant is present in population databases (rs747656448, gnomAD 0.005%). This missense change has been observed in individual(s) with autosomal recessive MYO7A-related conditions (PMID: 10094549, 19375528, 19888295, 23770805, 26226137, 28451532). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 402267). 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 not expected to disrupt MYO7A protein function with a negative predictive value of 95%. For these reasons, this variant has been classified as Pathogenic. -

Usher syndrome

Pathogenic:1

May 02, 2023

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: MYO7A c.6487G>A (p.Gly2163Ser) results in a non-conservative amino acid change located in the FERM domain (IPR000299) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 2.4e-05 in 249272 control chromosomes. c.6487G>A has been reported in the literature in multiple individuals affected with autosomal recessive non-syndromic hearing loss with evidence of familial segregation including in numerous homozygotes (examples: Shazad_2013, AbuRayyan_2020). These data indicate that the variant is very likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 32747562, 23770805). Six clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as pathogenic (n=3) or likely pathogenic (n=3). Based on the evidence outlined above, the variant was classified as pathogenic. -

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

Pathogenic:1

Jan 02, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Retinal dystrophy

Pathogenic:1

Jan 01, 2020

Institute of Human Genetics, Univ. Regensburg, Univ. Regensburg

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.84

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Pathogenic

0.17

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.74

D;.;.;T

Eigen

Pathogenic

0.80

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

0.99

D;D;D;D

M_CAP

Uncertain

0.21

MetaRNN

Pathogenic

0.84

D;D;D;D

MetaSVM

Uncertain

0.41

MutationAssessor

Pathogenic

3.5

M;.;.;.

PrimateAI

Pathogenic

0.89

PROVEAN

Pathogenic

-5.8

D;D;D;D

REVEL

Pathogenic

0.67

Sift

Uncertain

0.0020

D;D;D;D

Sift4G

Benign

0.077

T;T;T;D

Polyphen

1.0

D;.;.;.

Vest4

0.88

MutPred

0.41

Gain of disorder (P = 0.0478);.;.;.;

MVP

0.92

MPC

0.47

ClinPred

0.96

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.90

gMVP

0.69

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