Genetic Variant MYO3A:p.Glu1199Asp (chr10-26173861-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_017433.5(MYO3A):c.3597G>C(p.Glu1199Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,688 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. E1199E) has been classified as Benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

MYO3A
NM_017433.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.243

Publications

0 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):

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

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.057424128).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017433.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYO3A	NM_017433.5	MANE Select	c.3597G>C	p.Glu1199Asp	missense	Exon 30 of 35	NP_059129.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MYO3A	ENST00000642920.2	MANE Select	c.3597G>C	p.Glu1199Asp	missense	Exon 30 of 35	ENSP00000495965.1	Q8NEV4-1
MYO3A	ENST00000543632.5	TSL:1	c.1777-37982G>C		intron	N/A	ENSP00000445909.1	F5H0U9
MYO3A	ENST00000916509.1		c.3597G>C	p.Glu1199Asp	missense	Exon 30 of 33	ENSP00000586568.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461688

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727130

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53264

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111972

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.47

CADD

Benign

3.7

(source)

DANN

Benign

0.77

DEOGEN2

Benign

0.053

Eigen

Benign

-0.97

Eigen_PC

Benign

-0.99

FATHMM_MKL

Benign

0.14

LIST_S2

Benign

0.46

M_CAP

Benign

0.031

MetaRNN

Benign

0.057

MetaSVM

Benign

-0.84

MutationAssessor

Benign

1.8

PhyloP100

0.24

PrimateAI

Benign

0.26

PROVEAN

Benign

-0.25

REVEL

Benign

0.072

Sift

Benign

0.45

Sift4G

Benign

0.59

Polyphen

0.0010

Vest4

0.086

MutPred

0.20

Loss of methylation at K1201 (P = 0.0781)

MVP

0.73

MPC

0.057

ClinPred

0.030

GERP RS

0.033

Varity_R

0.035

gMVP

0.14

Mutation Taster

=96/4

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over