17-18135725-G-T

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got -1 ACMG points: 0P and 1B. BS1_Supporting

This summary comes from the ClinGen Evidence Repository: The p.Glu1499Asp variant in MYO15A has been identified in the heterozygous state in at least 4 individuals with hearing loss, 1 individual with intrauterine demise, and in 1 individual with hearing loss with a variant of uncertain significance suspected in trans (Partners LMM internal data SCV000711130.2, PMIDs: 27068579, 32304219). The filtering allele frequency (the lower threshold of the 95% CI of 59/35358) of the p.Glu1499Asp variant in the MYO15A gene is 0.13% for Latino/Admixed chromosomes by gnomAD v2.1, which is a higher frequency than would be expected for an autosomal recessive pathogenic variant based on the thresholds defined by the ClinGen Hearing Loss Expert Panel (BS1_Supporting). In summary, the clinical significance of this variant is uncertain. ACMG/AMP criteria applied, as specified by the Hearing Loss Expert Panel : BS1_Supporting. LINK:https://erepo.genome.network/evrepo/ui/classification/CA8423917/MONDO:0019497/005

Frequency

Genomes: 𝑓 0.00048 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0011 ( 3 hom. )

Consequence

MYO15A
NM_016239.4 missense

Scores

Clinical Significance

Uncertain significance reviewed by expert panel U:6B:2

Conservation

PhyloP100: 2.82

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got -1 ACMG points.

BS1

For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO15A	NM_016239.4 link	c.4497G>T	p.Glu1499Asp	missense_variant	Exon 13 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.4497G>T	p.Glu1499Asp	missense_variant	Exon 13 of 66		NM_016239.4	ENSP00000495481.1		Q9UKN7-1

Frequencies

GnomAD3 genomes

AF:

0.000480

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000265

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000786

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:

0.000705

Gnomad OTH

AF:

0.000955

GnomAD3 exomes

AF:

0.000798

AC:

199

AN:

249272

Hom.:

AF XY:

0.000717

AC XY:

AN XY:

135304

show subpopulations

Gnomad AFR exome

AF:

0.000259

Gnomad AMR exome

AF:

0.00168

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00113

Gnomad OTH exome

AF:

0.00149

GnomAD4 exome

AF:

0.00108

AC:

1577

AN:

1461830

Hom.:

Cov.:

AF XY:

0.00105

AC XY:

762

AN XY:

727212

show subpopulations

Gnomad4 AFR exome

AF:

0.000179

Gnomad4 AMR exome

AF:

0.00186

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00129

Gnomad4 OTH exome

AF:

0.000894

GnomAD4 genome

AF:

0.000479

AC:

AN:

152320

Hom.:

Cov.:

AF XY:

0.000403

AC XY:

AN XY:

74480

show subpopulations

Gnomad4 AFR

AF:

0.000265

Gnomad4 AMR

AF:

0.000785

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000706

Gnomad4 OTH

AF:

0.000945

Alfa

AF:

0.000962

Hom.:

Bravo

AF:

0.000623

TwinsUK

AF:

0.00216

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.000240

AC:

ESP6500EA

AF:

0.00142

AC:

ExAC

AF:

0.000810

AC:

EpiCase

AF:

0.00104

EpiControl

AF:

0.00107

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6Benign:2

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Dec 04, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Sep 16, 2021

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Reported in a patient with hearing loss in published literature; however, clinical information was limited (Sommen M et al., 2016); 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: 27068579, 32304219) -

Breakthrough Genomics, Breakthrough Genomics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Autosomal recessive nonsyndromic hearing loss 3

Uncertain:2

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Sep 03, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Uncertain:1

Mar 19, 2019

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Glu1499Asp variant in MYO15A has been identified in at least 5 individuals with hearing loss, only 1 of whom carried a second variant (classified as a VUS) in MYO15A (Sommen 2016, LMM data). This variant has also been identified in 0.17% (59/35358) of Latino and 0.11% (141/128518) of European chromosomes, including 2 homozygotes, by gnomAD (http://gnomad.broadinstitute.org). Computational prediction tools and conservation analysis suggest that the variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, the clinical significance of the p.Glu1499Asp variant is uncertain. ACMG/AMP Criteria applied: BS1_Supporting, PP3. -

Nonsyndromic genetic hearing loss

Uncertain:1

Jun 15, 2021

ClinGen Hearing Loss Variant Curation Expert Panel

Significance: Uncertain significance

Review Status: reviewed by expert panel

Collection Method: curation

The p.Glu1499Asp variant in MYO15A has been identified in the heterozygous state in at least 4 individuals with hearing loss, 1 individual with intrauterine demise, and in 1 individual with hearing loss with a variant of uncertain significance suspected in trans (Partners LMM internal data SCV000711130.2, PMIDs: 27068579, 32304219). The filtering allele frequency (the lower threshold of the 95% CI of 59/35358) of the p.Glu1499Asp variant in the MYO15A gene is 0.13% for Latino/Admixed chromosomes by gnomAD v2.1, which is a higher frequency than would be expected for an autosomal recessive pathogenic variant based on the thresholds defined by the ClinGen Hearing Loss Expert Panel (BS1_Supporting). In summary, the clinical significance of this variant is uncertain. ACMG/AMP criteria applied, as specified by the Hearing Loss Expert Panel : BS1_Supporting. -

MYO15A-related disorder

Benign:1

Jun 29, 2022

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.36

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.13

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.17

T;D;D

Eigen

Uncertain

0.47

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.83

T;.;T

M_CAP

Benign

0.077

MetaRNN

Benign

0.032

T;T;T

MetaSVM

Uncertain

0.57

MutationAssessor

Benign

1.3

.;L;L

PrimateAI

Uncertain

0.65

PROVEAN

Uncertain

-2.8

.;D;.

REVEL

Uncertain

0.45

Sift

Benign

0.24

.;T;.

Sift4G

Uncertain

0.059

T;T;.

Polyphen

1.0

.;D;D

Vest4

0.52

MutPred

0.43

Loss of disorder (P = 0.1633);Loss of disorder (P = 0.1633);Loss of disorder (P = 0.1633);

MVP

0.89

ClinPred

0.055

GERP RS

4.2

Varity_R

0.24

gMVP

0.34

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