rs782023308

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 6P and 3B. PM1PM2PM5BP4_ModerateBP6

The NM_000260.4(MYO7A):c.1543A>C(p.Lys515Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000992 in 1,551,642 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). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K515N) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 1 hom. )

Consequence

MYO7A
NM_000260.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:2

Conservation

PhyloP100: 6.20

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 3 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 8 uncertain in NM_000260.4

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr11-77162321-G-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1675469.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=2, Likely_pathogenic=1}.

BP4

Computational evidence support a benign effect (MetaRNN=0.07878074).

BP6

Variant 11-77162319-A-C is Benign according to our data. Variant chr11-77162319-A-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 179865.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=4, Likely_benign=2}. Variant chr11-77162319-A-C is described in Lovd as [Likely_benign].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYO7A	NM_000260.4 linkuse as main transcript	c.1543A>C	p.Lys515Gln	missense_variant	13/49	ENST00000409709.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYO7A	ENST00000409709.9 linkuse as main transcript	c.1543A>C	p.Lys515Gln	missense_variant	13/49	1	NM_000260.4		Q13402-1
MYO7A	ENST00000458637.6 linkuse as main transcript	c.1543A>C	p.Lys515Gln	missense_variant	13/49	1		P1	Q13402-2
MYO7A	ENST00000409619.6 linkuse as main transcript	c.1510A>C	p.Lys504Gln	missense_variant	14/50	1			Q13402-8

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152194

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:

0.00125

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000301

AC:

AN:

156152

Hom.:

AF XY:

0.000460

AC XY:

AN XY:

82602

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:

0.00206

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000106

AC:

148

AN:

1399330

Hom.:

Cov.:

AF XY:

0.000168

AC XY:

116

AN XY:

690170

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:

0.00175

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.000103

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152312

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74474

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:

0.00125

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.000283

AC:

Asia WGS

AF:

0.00115

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Jul 08, 2014

The Lys515Gln variant in MYO7A has been reported in one Usher syndrome study whe re it was detected in 1/878 (0.1%) control chromosomes and was classified as a " probably neutral" variant (Le Quesne Stabej 2012). This variant was absent from other large population studies. Computational prediction tools and conservation analyses do not provide strong support for or against an impact to the protein. In summary, the clinical significance of the Lys515Gln 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 1;C1838701:Autosomal recessive nonsyndromic hearing loss 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Counsyl

Jan 11, 2017

- -

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. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 16, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.59

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.23

Cadd

Uncertain

Dann

Uncertain

0.99

DEOGEN2

Uncertain

0.70

D;T;.;.

Eigen

Uncertain

0.34

Eigen_PC

Uncertain

0.36

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.89

D;D;D;D

M_CAP

Benign

0.061

MetaRNN

Benign

0.079

T;T;T;T

MetaSVM

Uncertain

-0.28

MutationAssessor

Benign

0.68

N;.;N;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-2.8

D;.;D;D

REVEL

Uncertain

0.42

Sift

Uncertain

0.022

D;.;D;D

Sift4G

Benign

0.20

T;T;T;T

Polyphen

0.96

D;.;.;.

Vest4

0.67

MutPred

0.55

Loss of methylation at K515 (P = 0.0114);Loss of methylation at K515 (P = 0.0114);Loss of methylation at K515 (P = 0.0114);.;

MVP

0.83

MPC

0.39

ClinPred

0.24

GERP RS

4.2

Varity_R

0.50

gMVP

0.58

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