NM_000260.4:c.324C>T

Variant names:

• chr11-77155945-C-T
• rs116892396
• NM_000260.4:c.324C>T

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BA1

This summary comes from the ClinGen Evidence Repository: The filtering allele frequency of the p.Tyr108= variant in the MYO7A gene is 1.45% (300/18658) of East Asian chromosomes by the Genome Aggregation Database (http://gnomad.broadinstitute.org; calculated by using inverse allele frequency at https://www.cardiodb.org/allelefrequencyapp/), which is a high enough frequency to be classified as benign based on thresholds defined by the ClinGen Hearing Loss Expert Panel for autosomal dominant hearing loss variants (BA1). LINK:https://erepo.genome.network/evrepo/ui/classification/CA132282/MONDO:0019497/005

• Frequency:
  • Genomes: 𝑓 0.00039 (1 hom., cov: 33)
  • Exomes 𝑓: 0.00023 (3 hom.)
• Consequence: MYO7A NM_000260.4 synonymous
• Clinical Significance: Benign reviewed by expert panel U:1 B:8
• Conservation: PhyloP100: 1.37
• Publications: 4 publications found

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

ACMG classification

Specifications for MYO7A are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Benign. The variant received -8 ACMG points.

• BA1: 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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYO7A	NM_000260.4	MANE Select	c.324C>T	p.Tyr108Tyr	synonymous	Exon 5 of 49	NP_000251.3	Q13402-1
	MYO7A	NM_001127180.2		c.324C>T	p.Tyr108Tyr	synonymous	Exon 5 of 49	NP_001120652.1	Q13402-2
	MYO7A	NM_001369365.1		c.291C>T	p.Tyr97Tyr	synonymous	Exon 6 of 50	NP_001356294.1	Q13402-8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYO7A	ENST00000409709.9	TSL:1 MANE Select	c.324C>T	p.Tyr108Tyr	synonymous	Exon 5 of 49	ENSP00000386331.3	Q13402-1
	MYO7A	ENST00000458637.6	TSL:1	c.324C>T	p.Tyr108Tyr	synonymous	Exon 5 of 49	ENSP00000392185.2	Q13402-2
	MYO7A	ENST00000409619.6	TSL:1	c.291C>T	p.Tyr97Tyr	synonymous	Exon 6 of 50	ENSP00000386635.2	Q13402-8

Frequencies

GnomAD3 genomes AF: 0.000401 AC: 61 AN: 152248 Hom.: 1 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.0113

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00120 AC: 293 AN: 244834 AF XY: 0.00123

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0163

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000335

GnomAD4 exome AF: 0.000227 AC: 331 AN: 1459070 Hom.: 3 Cov.: 31 AF XY: 0.000218 AC XY: 158 AN XY: 725448

African (AFR) AF: 0.00 AC: 0 AN: 33424

American (AMR) AF: 0.00 AC: 0 AN: 44414

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26064

East Asian (EAS) AF: 0.00778 AC: 308 AN: 39606

South Asian (SAS) AF: 0.0000117 AC: 1 AN: 85598

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53276

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1110628

Other (OTH) AF: 0.000365 AC: 22 AN: 60294

GnomAD4 genome AF: 0.000394 AC: 60 AN: 152366 Hom.: 1 Cov.: 33 AF XY: 0.000456 AC XY: 34 AN XY: 74516

African (AFR) AF: 0.00 AC: 0 AN: 41590

American (AMR) AF: 0.0000653 AC: 1 AN: 15304

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.0112 AC: 58 AN: 5192

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68034

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.0000591 Hom.: 0

Bravo AF: 0.000593

Asia WGS AF: 0.000866 AC: 3 AN: 3478

ClinVar

ClinVar submissions

Significance: Benign

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
-	-	3	not provided (3)
-	-	1	Autosomal dominant nonsyndromic hearing loss 11 (1)
-	1	-	Autosomal recessive nonsyndromic hearing loss 2 (1)
-	-	1	Nonsyndromic genetic hearing loss (1)
-	-	1	not specified (1)
-	-	1	Usher syndrome type 1 (1)
-	-	1	Usher syndrome type 1B (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.34
CADD	Benign	8.4
DANN	Benign	0.63
PhyloP100		1.4
Mutation Taster		=87/13	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs116892396; hg19: chr11-76866991;