NM_000260.4:c.6615G>C

Variant names:

• chr11-77214663-G-C
• rs200359303
• NM_000260.4:c.6615G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000260.4(MYO7A):​c.6615G>C​(p.Met2205Ile) variant causes a missense change. The variant allele was found at a frequency of 0.00000139 in 1,435,848 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar. The gene MYO7A is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: MYO7A NM_000260.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.51
• Publications: 0 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: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

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.6615G>C	p.Met2205Ile	missense	Exon 49 of 49	NP_000251.3	Q13402-1
	MYO7A	NM_001127180.2		c.6495G>C	p.Met2165Ile	missense	Exon 49 of 49	NP_001120652.1	Q13402-2
	MYO7A	NM_001369365.1		c.6468G>C	p.Met2156Ile	missense	Exon 50 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.6615G>C	p.Met2205Ile	missense	Exon 49 of 49	ENSP00000386331.3	Q13402-1
	MYO7A	ENST00000458637.6	TSL:1	c.6495G>C	p.Met2165Ile	missense	Exon 49 of 49	ENSP00000392185.2	Q13402-2
	MYO7A	ENST00000409619.6	TSL:1	c.6468G>C	p.Met2156Ile	missense	Exon 50 of 50	ENSP00000386635.2	Q13402-8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000139 AC: 2 AN: 1435848 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 711382

African (AFR) AF: 0.00 AC: 0 AN: 32940

American (AMR) AF: 0.00 AC: 0 AN: 40678

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25656

East Asian (EAS) AF: 0.00 AC: 0 AN: 38474

South Asian (SAS) AF: 0.00 AC: 0 AN: 81758

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51728

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5742

European-Non Finnish (NFE) AF: 0.00000182 AC: 2 AN: 1099320

Other (OTH) AF: 0.00 AC: 0 AN: 59552

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.63
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.10
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.48	T
Eigen	Uncertain	0.19
Eigen_PC	Uncertain	0.33
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.94	D
M_CAP	Uncertain	0.16	D
MetaRNN	Uncertain	0.49	T
MetaSVM	Uncertain	0.025	D
MutationAssessor	Uncertain	2.3	M
PhyloP100		6.5
PrimateAI	Uncertain	0.59	T
PROVEAN	Uncertain	-2.5	N
REVEL	Uncertain	0.54
Sift	Benign	0.10	T
Sift4G	Benign	0.17	T
Polyphen		0.026	B
Vest4		0.44
MutPred		0.29		Loss of disorder (P = 0.0375)
MVP		0.83
MPC		0.12
ClinPred		0.81	D
GERP RS		5.5
Varity_R		0.60
gMVP		0.54
Mutation Taster		=10/90	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs200359303; hg19: chr11-76925708;