NM_016239.4:c.8090T>C

Variant names:

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 10P and 1B. PM2PP5_Very_StrongBP4

The NM_016239.4(MYO15A):c.8090T>C(p.Val2697Ala) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000107 in 1,613,796 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

MYO15A
NM_016239.4 missense, splice_region

Scores

Splicing: ADA: 0.2244

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:8

Conservation

PhyloP100: 7.36

Variant links:

Genes affected

MYO15A (HGNC:7594): (myosin XVA) This gene encodes an unconventional myosin. This protein differs from other myosins in that it has a long N-terminal extension preceding the conserved motor domain. Studies in mice suggest that this protein is necessary for actin organization in the hair cells of the cochlea. Mutations in this gene have been associated with profound, congenital, neurosensory, nonsyndromal deafness. This gene is located within the Smith-Magenis syndrome region on chromosome 17. Read-through transcripts containing an upstream gene and this gene have been identified, but they are not thought to encode a fusion protein. Several alternatively spliced transcript variants have been described, but their full length sequences have not been determined. [provided by RefSeq, Jul 2008]

MYO15A links:

LOC105371567 (HGNC:):

LOC105371567 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 17-18154132-T-C is Pathogenic according to our data. Variant chr17-18154132-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 45764.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-18154132-T-C is described in Lovd as [Likely_pathogenic].

BP4

Computational evidence support a benign effect (MetaRNN=0.38983592). . Strength limited to SUPPORTING due to the PP5.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO15A	NM_016239.4 link	c.8090T>C	p.Val2697Ala	missense_variant, splice_region_variant	Exon 44 of 66	ENST00000647165.2	NP_057323.3	Q9UKN7-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYO15A	ENST00000647165.2 link	c.8090T>C	p.Val2697Ala	missense_variant, splice_region_variant	Exon 44 of 66		NM_016239.4	ENSP00000495481.1		Q9UKN7-1

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152108

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:

0.00104

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000257

AC:

AN:

249462

Hom.:

AF XY:

0.000273

AC XY:

AN XY:

135374

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:

0.00116

Gnomad NFE exome

AF:

0.000336

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.000105

AC:

154

AN:

1461688

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

727150

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:

0.00116

Gnomad4 NFE exome

AF:

0.0000755

Gnomad4 OTH exome

AF:

0.000132

GnomAD4 genome

AF:

0.000125

AC:

AN:

152108

Hom.:

Cov.:

AF XY:

0.000215

AC XY:

AN XY:

74302

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:

0.00104

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000111

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.000356

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000178

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:4

Sep 30, 2024

GeneDx

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 34093702, 30245029, 30622556, 27344577, 33398081, 33726816, 32860223, 23208854) -

Mar 08, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces valine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 2697 of the MYO15A protein (p.Val2697Ala). This variant is present in population databases (rs200451098, gnomAD 0.1%), including at least one homozygous and/or hemizygous individual. This missense change has been observed in individual(s) with deafness (PMID: 23208854, 30622556, 32860223, 33398081). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 45764). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. For these reasons, this variant has been classified as Pathogenic. -

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Autosomal recessive nonsyndromic hearing loss 3

Pathogenic:3

Oct 27, 2020

Laboratory of Prof. Karen Avraham, Tel Aviv University

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

Recessive, congenital SNHL -

Mar 26, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 18, 2023

Pittsburgh Clinical Genomics Laboratory, University of Pittsburgh Medical Center

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence variant is a single nucleotide substitution (T>C) at position 8090 of the coding sequence of the MYO15A gene that results in a valine to alanine amino acid change at residue 2697 of the myosin XVA protein. This is a previously reported variant (ClinVar 45764) that has been observed in many individuals affected by sensorineural hearing loss and segregates with disease across multiple pedigrees (PMID: 27344577, 30622556, 32387678, 33398081). This variant is present in 73 of 280832 alleles (0.0260%) in the gnomAD population dataset. Multiple bioinformatic tools predict that this Val to Ala amino acid change would be damaging, and the Val2697 residue at this position is highly conserved across the vertebrate species examined. Studies examining the functiol consequence of this variant have not been performed, to our knowledge. Based upon the evidence, we consider this variant to be likely pathogenic. ACMG Criteria: PM2, PM3, PP3, PS4 -

Rare genetic deafness

Pathogenic:1

Aug 17, 2021

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Val2697Ala variant in MYO15A has been reported in at least 7 individuals with hearing loss, 4 of which were found in the compound heterozygous state with another likely pathogenic or pathogenic variant and one in the homozygous state. It also segregated with disease in 2 affected individuals from 1 family (Schrauwen 2013 PMID: 23208854, Mikstiene 2017, Morgan 2018 PMID: 30622556, Safka Brozkova 2020 PMID: 32860223, Hirsch 2021). It has also been identified in 0.11% (29/25016) of Finnish and 0.03% (43/128624) of European chromosomes by gnomAD (http://gnomad.broadinstitute.org). This variant has also been reported in ClinVar (Variation ID 45764). Computational prediction tools and conservation analyses suggest that this variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, although additional studies are required to fully establish its clinical significance, this variant meets criteria to be classified as likely pathogenic for autosomal recessive hearing loss. ACMG/AMP Criteria applied: PM3_Strong, PP1_Supporting, PP3, BS1_Supporting. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.71

BayesDel_addAF

Uncertain

0.016

BayesDel_noAF

Uncertain

0.090

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.34

T;D;D

Eigen

Pathogenic

0.79

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.78

T;.;T

M_CAP

Pathogenic

0.47

MetaRNN

Benign

0.39

T;T;T

MetaSVM

Pathogenic

0.96

MutationAssessor

Uncertain

2.6

.;M;M

PrimateAI

Uncertain

0.64

PROVEAN

Uncertain

-3.5

.;D;.

REVEL

Pathogenic

0.86

Sift

Pathogenic

0.0

.;D;.

Sift4G

Pathogenic

0.0

D;D;.

Polyphen

1.0

.;D;D

Vest4

0.74

MVP

0.90

ClinPred

0.31

GERP RS

5.2

Varity_R

0.49

gMVP

0.56

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.22

dbscSNV1_RF

Benign

0.44

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