Genetic Variant MYO15A:p.Arg1208Ser (chr17-18124495-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_016239.4(MYO15A):c.3622C>A(p.Arg1208Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,980 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1208C) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

MYO15A
NM_016239.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.916

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

autosomal recessive nonsyndromic hearing loss 3
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), PanelApp Australia
nonsyndromic genetic hearing loss
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
hearing loss, autosomal recessive
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

MYO15A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO15A	NM_016239.4 link	c.3622C>A	p.Arg1208Ser	missense_variant	Exon 3 of 66	ENST00000647165.2	NP_057323.3	Q9UKN7-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYO15A	ENST00000647165.2 link	c.3622C>A	p.Arg1208Ser	missense_variant	Exon 3 of 66		NM_016239.4	ENSP00000495481.1	Q9UKN7-1
MYO15A	ENST00000651088.1 link	c.163C>A	p.Arg55Ser	missense_variant	Exon 2 of 2			ENSP00000498988.1	A0A494C1B3
MYO15A	ENST00000583079.1 link	n.5328C>A		non_coding_transcript_exon_variant	Exon 1 of 1	6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1459980

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726198

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44708

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86236

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111960

Other (OTH)

AF:

0.00

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

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 v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.44

BayesDel_addAF

Pathogenic

0.24

BayesDel_noAF

Uncertain

0.11

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.030

T;T;T

Eigen

Uncertain

0.42

Eigen_PC

Uncertain

0.41

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.76

T;.;T

M_CAP

Uncertain

0.17

MetaRNN

Uncertain

0.44

T;T;T

MetaSVM

Uncertain

0.71

MutationAssessor

Uncertain

2.1

.;M;M

PhyloP100

0.92

PrimateAI

Benign

0.32

PROVEAN

Benign

-2.3

.;N;.

REVEL

Uncertain

0.62

Sift

Uncertain

0.014

.;D;.

Sift4G

Uncertain

0.0050

D;D;.

Polyphen

0.99

.;D;D

Vest4

0.54

MutPred

0.44

Loss of solvent accessibility (P = 0.0238);Loss of solvent accessibility (P = 0.0238);Loss of solvent accessibility (P = 0.0238);

MVP

0.90

ClinPred

0.92

GERP RS

5.3

Varity_R

0.43

gMVP

0.66

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over