chr11-77203230-C-T

Position:

• chr11-77203230-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_000260.4(MYO7A):​c.5326+13C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00439 in 1,550,146 control chromosomes in the GnomAD database, including 235 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.023 (126 hom., cov: 33)
  • Exomes 𝑓: 0.0024 (109 hom.)
• Consequence: MYO7A NM_000260.4 intron
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8
• Conservation: PhyloP100: 1.52

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]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 11-77203230-C-T is Benign according to our data. Variant chr11-77203230-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 43279.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-77203230-C-T is described in Lovd as [Benign].
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0754 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYO7A	NM_000260.4	c.5326+13C>T		intron_variant		ENST00000409709.9	NP_000251.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYO7A	ENST00000409709.9	c.5326+13C>T		intron_variant		1	NM_000260.4	ENSP00000386331

Frequencies

GnomAD3 genomes AF: 0.0226 AC: 3444 AN: 152224 Hom.: 125 Cov.: 33

Gnomad AFR AF: 0.0777

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0113

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000220

Gnomad OTH AF: 0.0153

GnomAD3 exomes AF: 0.00503 AC: 780 AN: 154920 Hom.: 22 AF XY: 0.00403 AC XY: 335 AN XY: 83080

Gnomad AFR exome AF: 0.0784

Gnomad AMR exome AF: 0.00471

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000349

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000317

Gnomad OTH exome AF: 0.00390

GnomAD4 exome AF: 0.00240 AC: 3356 AN: 1397804 Hom.: 109 Cov.: 31 AF XY: 0.00210 AC XY: 1448 AN XY: 689380

Gnomad4 AFR exome AF: 0.0815

Gnomad4 AMR exome AF: 0.00520

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000227

Gnomad4 FIN exome AF: 0.0000621

Gnomad4 NFE exome AF: 0.000188

Gnomad4 OTH exome AF: 0.00562

GnomAD4 genome AF: 0.0227 AC: 3451 AN: 152342 Hom.: 126 Cov.: 33 AF XY: 0.0219 AC XY: 1632 AN XY: 74500

Gnomad4 AFR AF: 0.0777

Gnomad4 AMR AF: 0.0112

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000221

Gnomad4 OTH AF: 0.0151

Alfa AF: 0.0114 Hom.: 7

Bravo AF: 0.0253

Asia WGS AF: 0.00751 AC: 26 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 23, 2016	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -

not specified Benign:2

Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Apr 27, 2012	5326+13C>T in intron 38 of MYO7A: This variant is not expected to have clinical significance because it has been identified in 6.8% (219/3202) of African Americ an chromosomes from a broad population by the NHLBI Exome sequencing project (ht tp://evs.gs.washington.edu/EVS/; dbSNP rs114157944). -

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 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	-0.86
CADD	Benign	0.15
DANN	Benign	0.39

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: rs114157944; hg19: chr11-76914275;