chr10-26174196-C-G

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_017433.5(MYO3A):c.3932C>G(p.Thr1311Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000297 in 1,614,190 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0012 ( 2 hom., cov: 33)

Exomes 𝑓: 0.00020 ( 1 hom. )

Consequence

MYO3A
NM_017433.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 2.21

Publications

1 publications found

Variant links:

Genes affected

MYO3A (HGNC:7601): (myosin IIIA) The protein encoded by this gene belongs to the myosin superfamily. Myosins are actin-dependent motor proteins and are categorized into conventional myosins (class II) and unconventional myosins (classes I and III through XV) based on their variable C-terminal cargo-binding domains. Class III myosins, such as this one, have a kinase domain N-terminal to the conserved N-terminal motor domains and are expressed in photoreceptors. The protein encoded by this gene plays an important role in hearing in humans. Three different recessive, loss of function mutations in the encoded protein have been shown to cause nonsyndromic progressive hearing loss. Expression of this gene is highly restricted, with the strongest expression in retina and cochlea. [provided by RefSeq, Jul 2008]

MYO3A Gene-Disease associations (from GenCC):

autosomal recessive nonsyndromic hearing loss 30
Inheritance: AR, SD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Ambry Genetics
nonsyndromic genetic hearing loss
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
hearing loss, autosomal dominant 90
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
hearing loss, autosomal recessive
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

MYO3A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.00700292).

BP6

Variant 10-26174196-C-G is Benign according to our data. Variant chr10-26174196-C-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 290824.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00125 (190/152302) while in subpopulation AFR AF = 0.00424 (176/41556). AF 95% confidence interval is 0.00372. There are 2 homozygotes in GnomAd4. There are 89 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR,SD,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO3A	NM_017433.5 link	c.3932C>G	p.Thr1311Ser	missense_variant	Exon 30 of 35	ENST00000642920.2	NP_059129.3	Q8NEV4-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYO3A	ENST00000642920.2 link	c.3932C>G	p.Thr1311Ser	missense_variant	Exon 30 of 35		NM_017433.5	ENSP00000495965.1	Q8NEV4-1
MYO3A	ENST00000543632.5 link	c.1777-37647C>G		intron_variant	Intron 16 of 16	1		ENSP00000445909.1	F5H0U9
MYO3A	ENST00000647478.1 link	n.*1393+3657C>G		intron_variant	Intron 27 of 29			ENSP00000493932.1	A0A2R8Y4D5

Frequencies

GnomAD3 genomes

AF:

0.00124

AC:

189

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00422

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000655

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:

0.0000294

Gnomad OTH

AF:

0.000955

GnomAD2 exomes

AF:

0.000326

AC:

AN:

251364

AF XY:

0.000280

show subpopulations

Gnomad AFR exome

AF:

0.00388

Gnomad AMR exome

AF:

0.000202

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000616

Gnomad OTH exome

AF:

0.000652

GnomAD4 exome

AF:

0.000198

AC:

290

AN:

1461888

Hom.:

Cov.:

AF XY:

0.000176

AC XY:

128

AN XY:

727246

show subpopulations

African (AFR)

AF:

0.00478

AC:

160

AN:

33480

American (AMR)

AF:

0.000246

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00191

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000621

AC:

AN:

1112006

Other (OTH)

AF:

0.000613

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.466

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00125

AC:

190

AN:

152302

Hom.:

Cov.:

AF XY:

0.00120

AC XY:

AN XY:

74468

show subpopulations

African (AFR)

AF:

0.00424

AC:

176

AN:

41556

American (AMR)

AF:

0.000654

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68034

Other (OTH)

AF:

0.000945

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000227

Hom.:

Bravo

AF:

0.00152

ESP6500AA

AF:

0.00386

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000412

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.000178

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Oct 05, 2021

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Nov 18, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:2

Jun 21, 2016

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Thr1311Ser in Exon 30 of MYO3A: This variant is not expected to have clinical significance because it has been identified in 0.4% (42/10370) of African chromo somes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs146693681). -

Sep 12, 2016

Eurofins Ntd Llc (ga)

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Autosomal recessive nonsyndromic hearing loss 30

Uncertain:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. -

MYO3A-related disorder

Benign:1

May 24, 2024

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

Benign

0.12

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.40

CADD

Benign

(source)

DANN

Benign

0.83

DEOGEN2

Benign

0.054

T;T

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.093

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.61

.;T

M_CAP

Benign

0.021

MetaRNN

Benign

0.0070

T;T

MetaSVM

Benign

-0.92

MutationAssessor

Benign

1.1

L;L

PhyloP100

2.2

PrimateAI

Benign

0.29

PROVEAN

Benign

-0.15

.;N

REVEL

Benign

0.17

Sift

Benign

0.39

.;T

Sift4G

Benign

0.41

.;T

Polyphen

0.013

B;B

Vest4

0.13

MutPred

0.17

Loss of glycosylation at T1311 (P = 0.055);Loss of glycosylation at T1311 (P = 0.055);

MVP

0.77

MPC

0.067

ClinPred

0.0084

GERP RS

4.1

Varity_R

0.052

gMVP

0.039

Mutation Taster

=97/3

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over