Genetic Variant MYO7A:p.Gly1191Val (chr11-77189412-G-T) – ACMG Classification: Likely_pathogenic (8 pts)

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1PM2PP3_Strong

The NM_000260.4(MYO7A):c.3572G>T(p.Gly1191Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,598 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

MYO7A
NM_000260.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 9.59

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:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

PM1

In a domain MyTH4 1 (size 236) in uniprot entity MYO7A_HUMAN there are 26 pathogenic changes around while only 4 benign (87%) in NM_000260.4

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.954

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO7A	NM_000260.4 link	c.3572G>T	p.Gly1191Val	missense_variant	Exon 28 of 49	ENST00000409709.9	NP_000251.3	Q13402-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYO7A	ENST00000409709.9 link	c.3572G>T	p.Gly1191Val	missense_variant	Exon 28 of 49	1	NM_000260.4	ENSP00000386331.3	Q13402-1
MYO7A	ENST00000458637.6 link	c.3572G>T	p.Gly1191Val	missense_variant	Exon 28 of 49	1		ENSP00000392185.2	Q13402-2
MYO7A	ENST00000409619.6 link	c.3539G>T	p.Gly1180Val	missense_variant	Exon 29 of 50	1		ENSP00000386635.2	Q13402-8
MYO7A	ENST00000458169.2 link	c.1115G>T	p.Gly372Val	missense_variant	Exon 8 of 29	1		ENSP00000417017.2	H7C4D8
MYO7A	ENST00000670577.1 link	n.1412G>T		non_coding_transcript_exon_variant	Exon 11 of 32			ENSP00000499323.1	A0A590UJ94

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461598

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727072

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.53

BayesDel_noAF

Pathogenic

0.53

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.82

D;.;.;D

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.95

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

D;D;D;D

M_CAP

Pathogenic

0.56

MetaRNN

Pathogenic

0.95

D;D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

3.2

M;M;.;.

PrimateAI

Pathogenic

0.84

PROVEAN

Pathogenic

-8.7

D;D;D;D

REVEL

Pathogenic

0.95

Sift

Pathogenic

0.0

D;D;D;D

Sift4G

Uncertain

0.0020

D;D;D;D

Polyphen

1.0

D;.;.;.

Vest4

0.98

MutPred

0.73

Loss of disorder (P = 0.0642);Loss of disorder (P = 0.0642);.;.;

MVP

0.98

MPC

0.52

ClinPred

1.0

GERP RS

5.4

Varity_R

0.98

gMVP

0.87

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

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over