chr11-77155902-C-T

Position:

chr11-77155902-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_000260.4(MYO7A):c.286-5C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00275 in 1,584,686 control chromosomes in the GnomAD database, including 91 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.013 ( 48 hom., cov: 33)

Exomes 𝑓: 0.0017 ( 43 hom. )

Consequence

MYO7A
NM_000260.4 splice_region, intron

Scores

Splicing: ADA: 0.00002144

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -0.266

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 Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.81).

BP6

Variant 11-77155902-C-T is Benign according to our data. Variant chr11-77155902-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 43192.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0131 (1988/152322) while in subpopulation AFR AF= 0.0441 (1832/41552). AF 95% confidence interval is 0.0424. There are 48 homozygotes in gnomad4. There are 921 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 48 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYO7A	NM_000260.4 link	c.286-5C>T		splice_region_variant, intron_variant		ENST00000409709.9	NP_000251.3	Q13402-1

Ensembl

Gene	Transcript	HGVSc	Effect	TSL	MANE	Protein	UniProt
MYO7A	ENST00000409709.9 link	c.286-5C>T	splice_region_variant, intron_variant	1	NM_000260.4	ENSP00000386331.3	Q13402-1
MYO7A	ENST00000458637.6 link	c.286-5C>T	splice_region_variant, intron_variant	1		ENSP00000392185.2	Q13402-2
MYO7A	ENST00000409619.6 link	c.253-5C>T	splice_region_variant, intron_variant	1		ENSP00000386635.2	Q13402-8

Frequencies

GnomAD3 genomes

AF:

0.0130

AC:

1982

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0441

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00379

Gnomad ASJ

AF:

0.0176

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000250

Gnomad OTH

AF:

0.00910

GnomAD3 exomes

AF:

0.00384

AC:

855

AN:

222588

Hom.:

AF XY:

0.00276

AC XY:

332

AN XY:

120082

show subpopulations

Gnomad AFR exome

AF:

0.0455

Gnomad AMR exome

AF:

0.00160

Gnomad ASJ exome

AF:

0.0165

Gnomad EAS exome

AF:

0.000364

Gnomad SAS exome

AF:

0.0000381

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000280

Gnomad OTH exome

AF:

0.00126

GnomAD4 exome

AF:

0.00166

AC:

2372

AN:

1432364

Hom.:

Cov.:

AF XY:

0.00141

AC XY:

1001

AN XY:

708092

show subpopulations

Gnomad4 AFR exome

AF:

0.0468

Gnomad4 AMR exome

AF:

0.00187

Gnomad4 ASJ exome

AF:

0.0147

Gnomad4 EAS exome

AF:

0.000207

Gnomad4 SAS exome

AF:

0.0000853

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000108

Gnomad4 OTH exome

AF:

0.00417

GnomAD4 genome

AF:

0.0131

AC:

1988

AN:

152322

Hom.:

Cov.:

AF XY:

0.0124

AC XY:

921

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.0441

Gnomad4 AMR

AF:

0.00379

Gnomad4 ASJ

AF:

0.0176

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000250

Gnomad4 OTH

AF:

0.00900

Alfa

AF:

0.00622

Hom.:

Bravo

AF:

0.0145

Asia WGS

AF:

0.00346

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Feb 20, 2012	286-5C>T in intron 5 of MYO7A: This variant is not expected to have clinical sig nificance because it has been identified in 4.4% (163/3706) of African American chromosomes from a broad population by the NHLBI Exome Sequencing Project (http: //evs.gs.washington.edu/EVS/; dbSNP rs111033471). -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 29, 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. -

not provided

Benign:2

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -

Autosomal recessive nonsyndromic hearing loss 2

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 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

Jan 12, 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.

Sep 16, 2020

- -

Usher syndrome type 1

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.81

CADD

Benign

1.1

DANN

Benign

0.54

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000021

dbscSNV1_RF

Benign

0.0020

SpliceAI score (max)

0.020

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