rs397516302

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000260.4(MYO7A):c.358C>A(p.Arg120Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000093 in 1,613,420 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R120H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

MYO7A
NM_000260.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:1

Conservation

PhyloP100: 5.03

Variant links:

Genes affected

MYO7A (HGNC:7606): (myosin VIIA) This gene is a member of the myosin gene family. Myosins are mechanochemical proteins characterized by the presence of a motor domain, an actin-binding domain, a neck domain that interacts with other proteins, and a tail domain that serves as an anchor. This gene encodes an unconventional myosin with a very short tail. Defects in this gene are associated with the mouse shaker-1 phenotype and the human Usher syndrome 1B which are characterized by deafness, reduced vestibular function, and (in human) retinal degeneration. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2008]

MYO7A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYO7A	NM_000260.4 linkuse as main transcript	c.358C>A	p.Arg120Ser	missense_variant	5/49	ENST00000409709.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYO7A	ENST00000409709.9 linkuse as main transcript	c.358C>A	p.Arg120Ser	missense_variant	5/49	1	NM_000260.4		Q13402-1
MYO7A	ENST00000458637.6 linkuse as main transcript	c.358C>A	p.Arg120Ser	missense_variant	5/49	1		P1	Q13402-2
MYO7A	ENST00000409619.6 linkuse as main transcript	c.325C>A	p.Arg109Ser	missense_variant	6/50	1			Q13402-8

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000577

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000363

AC:

AN:

247748

Hom.:

AF XY:

0.0000372

AC XY:

AN XY:

134402

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000502

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000821

AC:

AN:

1461054

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

726698

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000227

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152366

Hom.:

Cov.:

AF XY:

0.0000268

AC XY:

AN XY:

74510

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000579

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.00000826

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Feb 02, 2018	The p.Arg120Ser variant (rs397516302) has not been reported in the medical literature, gene specific variation databases, nor has it been previously identified by our laboratory. This variant is listed in the Genome Aggregation Database (gnomAD) a frequency of 0.06 percent in the East Asian population (identified on 11 out of 18,826 chromosomes), and has been reported to the ClinVar database (Variation ID: 43213). The arginine at position 120 is moderately conserved considering 13 species (Alamut v2.10) and computational analyses of the effects of the p.Arg120Ser variant on protein structure and function provide conflicting results (SIFT: damaging, MutationTaster: disease causing, PolyPhen-2: benign). Altogether, there is not enough evidence to classify the p.Arg120Ser variant with certainty. -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Jun 14, 2023	In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Likely benign, criteria provided, single submitter	clinical testing	Invitae	Jan 29, 2024	- -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Sep 12, 2011

The Arg120Ser variant in MYO7A has not been reported in the literature nor previ ously identified by our laboratory. Computational analyses (biochemical amino ac id properties, homology, PolyPhen2, SIFT, AlignGVGD) do not provide strong suppo rt for or against pathogenicity. In summary, the clinical significance of this v ariant cannot be determined with certainty at this time. It should be noted that this lab has only sequenced MYO7A in 23 Asian probands and no Asian healthy con trols. In addition, healthy control information is limited in either public data bases or scientific literature, such that the full spectrum of benign variation has not yet been defined for this population. Future analysis could reveal that the Arg120Ser variant is common in this population and therefore unlikely to be pathogenic. -

Usher syndrome type 1;C1838701:Autosomal recessive nonsyndromic hearing loss 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Counsyl

Feb 23, 2017

- -

Usher syndrome type 1B

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Jan 23, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.47

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Pathogenic

0.28

Cadd

Uncertain

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.73

D;T;.;.

Eigen

Benign

0.12

Eigen_PC

Uncertain

0.29

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Benign

0.85

D;T;D;D

M_CAP

Uncertain

0.15

MetaRNN

Uncertain

0.73

D;D;D;D

MetaSVM

Uncertain

0.0017

MutationAssessor

Benign

1.2

L;.;L;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-3.3

D;.;D;D

REVEL

Pathogenic

0.65

Sift

Uncertain

0.017

D;.;D;D

Sift4G

Benign

0.085

T;T;T;T

Polyphen

0.0010

B;.;.;.

Vest4

0.85

MutPred

0.54

Gain of ubiquitination at K125 (P = 0.033);Gain of ubiquitination at K125 (P = 0.033);Gain of ubiquitination at K125 (P = 0.033);.;

MVP

0.94

MPC

0.096

ClinPred

0.36

GERP RS

5.1

Varity_R

0.75

gMVP

0.72

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