11-77199771-G-A

Position:

• chr11-77199771-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_000260.4(MYO7A):​c.4805G>A​(p.Arg1602Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00111 in 1,611,594 control chromosomes in the GnomAD database, including 39 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0017 (5 hom., cov: 32)
  • Exomes 𝑓: 0.0010 (34 hom.)
• Consequence: MYO7A NM_000260.4 missense
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:14 O:1
• Conservation: PhyloP100: 7.34

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 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.007830411).
• BP6: Variant 11-77199771-G-A is Benign according to our data. Variant chr11-77199771-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 43260.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-77199771-G-A is described in Lovd as [Benign]. Variant chr11-77199771-G-A is described in Lovd as [Likely_benign].
• BS1: Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.0017 (259/152300) while in subpopulation EAS AF= 0.0446 (231/5176). AF 95% confidence interval is 0.0399. There are 5 homozygotes in gnomad4. There are 138 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 5 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYO7A	NM_000260.4	c.4805G>A	p.Arg1602Gln	missense_variant	35/49	ENST00000409709.9	NP_000251.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYO7A	ENST00000409709.9	c.4805G>A	p.Arg1602Gln	missense_variant	35/49	1	NM_000260.4	ENSP00000386331.3
MYO7A	ENST00000458637.6	c.4691G>A	p.Arg1564Gln	missense_variant	35/49	1		ENSP00000392185.2
MYO7A	ENST00000409619.6	c.4658G>A	p.Arg1553Gln	missense_variant	36/50	1		ENSP00000386635.2
MYO7A	ENST00000458169.2	c.2234G>A	p.Arg745Gln	missense_variant	15/29	1		ENSP00000417017.2
MYO7A	ENST00000670577.1	n.2645G>A		non_coding_transcript_exon_variant	18/32			ENSP00000499323.1

Frequencies

GnomAD3 genomes AF: 0.00170 AC: 258 AN: 152182 Hom.: 5 Cov.: 32

Gnomad AFR AF: 0.0000724

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000458

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.0445

Gnomad SAS AF: 0.000828

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000588

Gnomad OTH AF: 0.00430

GnomAD3 exomes AF: 0.00371 AC: 917 AN: 247340 Hom.: 27 AF XY: 0.00349 AC XY: 469 AN XY: 134204

Gnomad AFR exome AF: 0.0000650

Gnomad AMR exome AF: 0.000116

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0487

Gnomad SAS exome AF: 0.000692

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000447

Gnomad OTH exome AF: 0.00200

GnomAD4 exome AF: 0.00105 AC: 1528 AN: 1459294 Hom.: 34 Cov.: 33 AF XY: 0.00104 AC XY: 751 AN XY: 725530

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000179

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0316

Gnomad4 SAS exome AF: 0.000721

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000540

Gnomad4 OTH exome AF: 0.00242

GnomAD4 genome AF: 0.00170 AC: 259 AN: 152300 Hom.: 5 Cov.: 32 AF XY: 0.00185 AC XY: 138 AN XY: 74466

Gnomad4 AFR AF: 0.0000722

Gnomad4 AMR AF: 0.000457

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.0446

Gnomad4 SAS AF: 0.000829

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000588

Gnomad4 OTH AF: 0.00473

Alfa AF: 0.00140 Hom.: 3

Bravo AF: 0.00163

ESP6500AA AF: 0.000255 AC: 1

ESP6500EA AF: 0.000121 AC: 1

ExAC AF: 0.00324 AC: 391

Asia WGS AF: 0.0140 AC: 50 AN: 3478

EpiCase AF: 0.000109

EpiControl AF: 0.000119

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:14 Other:1

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:6

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 14, 2018	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	May 01, 2023	MYO7A: BS1, BS2 -
Likely benign, no assertion criteria provided	literature only	Department of Ophthalmology and Visual Sciences Kyoto University	-	- -
Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

not specified Benign:3

Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Dec 08, 2016	- -
Likely benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Dec 07, 2012	p.Arg1602Gln in exon 35 of MYO7A: This variant is not expect to have clinical si gnificance because it has been identified in 4.4% (377/8484) of East Asian chrom osomes including 7 homozygotes by the Exome Aggregation Consortium (ExAC, http:/ /exac.broadinstitute.org; dbSNP rs139889944). This variant was reported in 2 ind ividuals with Usher syndrome (Liu 1998, Weston 1998). It was reported in trans with p.Leu651Pro in MYO7A of uncertain significance in two affected siblings (Li u 1998) and to be homozygous in another individual (Weston 1998), which is consi stent with its allele frequency in the general population and insufficient to su pport pathogenicity. -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -

Usher syndrome type 1 Benign:1 Other:1

not provided, no classification provided	literature only	GeneReviews	-	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Mar 06, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Autosomal recessive nonsyndromic hearing loss 2 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Mar 06, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Autosomal dominant nonsyndromic hearing loss 11 Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Mar 06, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Usher syndrome type 1B Benign:1

Benign, no assertion criteria provided

clinical testing

Natera, Inc.

Apr 17, 2020

- -

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

Likely benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Nov 09, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.44
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Uncertain	-0.020
CADD	Pathogenic	28
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.69	D;.;.;T
Eigen	Pathogenic	0.72
Eigen_PC	Pathogenic	0.72
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.99	D;D;D;D
MetaRNN	Benign	0.0078	T;T;T;T
MetaSVM	Benign	-0.33	T
MutationAssessor	Uncertain	2.9	M;.;.;.
PrimateAI	Uncertain	0.70	T
PROVEAN	Uncertain	-2.5	D;D;D;D
REVEL	Uncertain	0.48
Sift	Uncertain	0.0070	D;D;T;D
Sift4G	Benign	0.16	T;T;T;D
Polyphen		0.98	D;.;.;.
Vest4		0.73
MVP		0.91
MPC		0.50
ClinPred		0.12	T
GERP RS		5.0
Varity_R		0.50
gMVP		0.55

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

Other links and lift over

dbSNP: rs139889944; hg19: chr11-76910816;