rs138955440

Positions:

chr10-26170493-A-G

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_017433.5(MYO3A):c.3352A>G(p.Thr1118Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000348 in 1,613,174 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 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 0.00035 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00035 ( 4 hom. )

Consequence

MYO3A
NM_017433.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: 1.78

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.004783869).

BP6

Variant 10-26170493-A-G is Benign according to our data. Variant chr10-26170493-A-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 178467.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Benign=1, Uncertain_significance=1}.

BS2

High Homozygotes in GnomAdExome4 at 4 SD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYO3A	NM_017433.5 linkuse as main transcript	c.3352A>G	p.Thr1118Ala	missense_variant	29/35	ENST00000642920.2	NP_059129.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYO3A	ENST00000642920.2 linkuse as main transcript	c.3352A>G	p.Thr1118Ala	missense_variant	29/35		NM_017433.5	ENSP00000495965	P1	Q8NEV4-1
MYO3A	ENST00000543632.5 linkuse as main transcript	c.1777-41350A>G		intron_variant		1		ENSP00000445909
MYO3A	ENST00000647478.1 linkuse as main transcript	c.*1347A>G		3_prime_UTR_variant, NMD_transcript_variant	27/30			ENSP00000493932

Frequencies

GnomAD3 genomes

AF:

0.000355

AC:

AN:

152226

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000523

Gnomad ASJ

AF:

0.0107

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.000955

GnomAD3 exomes

AF:

0.000738

AC:

185

AN:

250732

Hom.:

AF XY:

0.000620

AC XY:

AN XY:

135534

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.000580

Gnomad ASJ exome

AF:

0.0145

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000115

Gnomad OTH exome

AF:

0.000818

GnomAD4 exome

AF:

0.000348

AC:

508

AN:

1460948

Hom.:

Cov.:

AF XY:

0.000359

AC XY:

261

AN XY:

726796

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.000492

Gnomad4 ASJ exome

AF:

0.0138

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000657

Gnomad4 OTH exome

AF:

0.000829

GnomAD4 genome

AF:

0.000355

AC:

AN:

152226

Hom.:

Cov.:

AF XY:

0.000323

AC XY:

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.0107

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.000955

Alfa

AF:

0.000668

Hom.:

Bravo

AF:

0.000442

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000659

AC:

EpiCase

AF:

0.000382

EpiControl

AF:

0.000356

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Nov 16, 2023	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 28, 2022	See Variant Classification Assertion Criteria. -

Autosomal recessive nonsyndromic hearing loss 30

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 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. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Jun 05, 2013

Thr1118Ala in exon 29 of MYO3A: This variant is not expected to have clinical si gnificance due to a lack of conservation across species, including mammals. Furt hermore, this variant has been identified in 0.06% (5/8600) of European American chromosomes by the NHLBI Exome Sequencing Project (http://evs.gs.washington.edu /EVS/; dbSNP rs138955440). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.58

CADD

Benign

4.6

DANN

Benign

0.10

DEOGEN2

Benign

0.037

T;T

Eigen

Benign

-0.96

Eigen_PC

Benign

-0.87

FATHMM_MKL

Benign

0.25

LIST_S2

Benign

0.46

.;T

M_CAP

Benign

0.0085

MetaRNN

Benign

0.0048

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.4

L;L

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.39

PROVEAN

Benign

0.56

.;N

REVEL

Benign

0.061

Sift

Benign

1.0

.;T

Sift4G

Benign

0.94

.;T

Polyphen

0.0

B;B

Vest4

0.052

MVP

0.65

MPC

0.060

ClinPred

0.027

GERP RS

2.0

Varity_R

0.027

gMVP

0.078

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