dbSNP rs111033437: MYO7A:p.Arg853His (chr11-77179925-G-A) – ACMG Classification: Likely_pathogenic (7 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PP1_StrongPP3PM2_SupportingPS4_Supporting

This summary comes from the ClinGen Evidence Repository: The c.2558G>A variant in MYO7A is a missense variant predicted to cause substitution of arginine by histidine at amino acid 853. This variant is absent from gnomAD v2.1.1 (PM2_Supporting). The computational predictor REVEL gives a score of 0.741, which is above the threshold of 0.7, evidence that correlates with impact to MYO7A function (PP3). This variant has been reported in 3 probands/families with hearing loss (PS4_Supporting; PMIDs: 26969326, 32097363, ClinVar SCV: SCV000059742.6, LMM). The variant has been reported to segregate with nonsyndromic genetic hearing loss in 10 affected family members from 1 family (PP1_Strong; PMID:32097363). In summary, this variant meets the criteria to be classified as likely pathogenic for autosomal dominant nonsyndromic genetic hearing loss based on the ACMG/AMP criteria applied, as specified by the ClinGen Hearing Loss VCEP: PP1_S, PS4_P, PM2_P, PP3 (Hearing Loss VCEP specifications version 2; 10/31/2022). LINK:https://erepo.genome.network/evrepo/ui/classification/CA132255/MONDO:0019497/005

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 34)

Exomes 𝑓: 0.0000072 ( 0 hom. )

Consequence

MYO7A
NM_000260.4 missense

Scores

Clinical Significance

Likely pathogenic reviewed by expert panel P:9U:3

Conservation

PhyloP100: 9.96

Publications

6 publications found

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 Gene-Disease associations (from GenCC):

nonsyndromic genetic hearing loss
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
autosomal recessive nonsyndromic hearing loss 2
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
Usher syndrome type 1
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
Usher syndrome type 1B
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
autosomal dominant nonsyndromic hearing loss 11
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
autosomal dominant nonsyndromic hearing loss
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hearing loss, autosomal recessive
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Usher syndrome type 2
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

MYO7A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

PS4

For more information check the summary or visit ClinGen Evidence Repository.

PM2

For more information check the summary or visit ClinGen Evidence Repository.

PP1

For more information check the summary or visit ClinGen Evidence Repository.

PP3

For more information check the summary or visit ClinGen Evidence Repository.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000260.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MYO7A	NM_000260.4	MANE Select	c.2558G>A	p.Arg853His	missense	Exon 21 of 49	NP_000251.3	Q13402-1
MYO7A	NM_001127180.2		c.2558G>A	p.Arg853His	missense	Exon 21 of 49	NP_001120652.1	Q13402-2
MYO7A	NM_001369365.1		c.2525G>A	p.Arg842His	missense	Exon 22 of 50	NP_001356294.1	Q13402-8

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MYO7A	ENST00000409709.9	TSL:1 MANE Select	c.2558G>A	p.Arg853His	missense	Exon 21 of 49	ENSP00000386331.3	Q13402-1
MYO7A	ENST00000458637.6	TSL:1	c.2558G>A	p.Arg853His	missense	Exon 21 of 49	ENSP00000392185.2	Q13402-2
MYO7A	ENST00000409619.6	TSL:1	c.2525G>A	p.Arg842His	missense	Exon 22 of 50	ENSP00000386635.2	Q13402-8

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152234

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

135470

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.00000725

AC:

AN:

1379648

Hom.:

Cov.:

AF XY:

0.00000589

AC XY:

AN XY:

679390

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31404

American (AMR)

AF:

0.00

AC:

AN:

35520

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25088

East Asian (EAS)

AF:

0.0000282

AC:

AN:

35490

South Asian (SAS)

AF:

0.00

AC:

AN:

78956

European-Finnish (FIN)

AF:

0.00

AC:

AN:

37706

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4274

European-Non Finnish (NFE)

AF:

0.00000745

AC:

AN:

1073890

Other (OTH)

AF:

0.0000174

AC:

AN:

57320

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.520

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

AF:

0.00000657

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74368

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41468

American (AMR)

AF:

0.00

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

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:

0.0000305

Hom.:

Bravo

AF:

0.00000756

ClinVar

ClinVar submissions

Significance:Likely pathogenic

Revision:reviewed by expert panel

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

Autosomal dominant nonsyndromic hearing loss 11 (3)

Inborn genetic diseases (1)

MYO7A-related disorder (1)

Nonsyndromic genetic hearing loss (1)

not specified (1)

Usher syndrome type 1;C1832475:Autosomal dominant nonsyndromic hearing loss 11;C1838701:Autosomal recessive nonsyndromic hearing loss 2 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.36

BayesDel_addAF

Pathogenic

0.29

BayesDel_noAF

Pathogenic

0.18

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.75

Eigen

Pathogenic

0.95

Eigen_PC

Pathogenic

0.90

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Pathogenic

0.98

M_CAP

Pathogenic

0.46

MetaRNN

Pathogenic

0.84

MetaSVM

Pathogenic

0.98

MutationAssessor

Pathogenic

3.3

PhyloP100

PrimateAI

Uncertain

0.65

PROVEAN

Uncertain

-3.7

REVEL

Pathogenic

0.74

Sift

Uncertain

0.012

Sift4G

Uncertain

0.0060

Polyphen

1.0

Vest4

0.80

MutPred

0.52

Loss of methylation at R853 (P = 0.0909)

MVP

0.98

MPC

0.52

ClinPred

1.0

GERP RS

5.6

PromoterAI

0.0031

Neutral

(source)

Varity_R

0.41

gMVP

0.63

Mutation Taster

=3/97

disease causing (ClinVar)

(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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over