NM_000260.4:c.3701C>G

Variant names:

• chr11-77190090-C-G
• rs775908821
• NM_000260.4:c.3701C>G

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM1

The NM_000260.4(MYO7A):​c.3701C>G​(p.Thr1234Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000014 in 1,427,280 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. T1234T) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: MYO7A NM_000260.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: 5.81
• Publications: 3 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, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Ambry Genetics, G2P
• Usher syndrome type 1

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, PanelApp Australia
• Usher syndrome type 1B

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• autosomal dominant nonsyndromic hearing loss 11

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• 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

ENSG00000296534 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in NM_000260.4

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.3701C>G	p.Thr1234Ser	missense	Exon 29 of 49	NP_000251.3
	MYO7A	NM_001127180.2		c.3701C>G	p.Thr1234Ser	missense	Exon 29 of 49	NP_001120652.1
	MYO7A	NM_001369365.1		c.3668C>G	p.Thr1223Ser	missense	Exon 30 of 50	NP_001356294.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYO7A	ENST00000409709.9	TSL:1 MANE Select	c.3701C>G	p.Thr1234Ser	missense	Exon 29 of 49	ENSP00000386331.3
	MYO7A	ENST00000458637.6	TSL:1	c.3701C>G	p.Thr1234Ser	missense	Exon 29 of 49	ENSP00000392185.2
	MYO7A	ENST00000409619.6	TSL:1	c.3668C>G	p.Thr1223Ser	missense	Exon 30 of 50	ENSP00000386635.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.0000359 AC: 7 AN: 194892 AF XY: 0.0000380

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000496

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000140 AC: 20 AN: 1427280 Hom.: 0 Cov.: 32 AF XY: 0.0000170 AC XY: 12 AN XY: 706598

African (AFR) AF: 0.00 AC: 0 AN: 32792

American (AMR) AF: 0.00 AC: 0 AN: 39440

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25528

East Asian (EAS) AF: 0.000528 AC: 20 AN: 37898

South Asian (SAS) AF: 0.00 AC: 0 AN: 81230

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50236

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5640

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1095408

Other (OTH) AF: 0.00 AC: 0 AN: 59108

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000378

ExAC AF: 0.00000839 AC: 1

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)
-	1	-	Usher syndrome type 1;C1838701:Autosomal recessive nonsyndromic hearing loss 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.93
BayesDel_addAF	Benign	-0.057	T
BayesDel_noAF	Uncertain	0.010
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.75	D
Eigen	Uncertain	0.46
Eigen_PC	Uncertain	0.48
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.34	D
MetaRNN	Uncertain	0.71	D
MetaSVM	Uncertain	0.034	D
MutationAssessor	Uncertain	2.1	M
PhyloP100		5.8
PrimateAI	Uncertain	0.78	T
PROVEAN	Uncertain	-3.7	D
REVEL	Pathogenic	0.69
Sift	Uncertain	0.0050	D
Sift4G	Uncertain	0.035	D
Polyphen		0.38	B
Vest4		0.85
MutPred		0.71		Gain of disorder (P = 0.0785)
MVP		0.92
MPC		0.092
ClinPred		0.37	T
GERP RS		5.4
Varity_R		0.73
gMVP		0.71
Mutation Taster		=10/90	disease causing

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

Other links and lift over

dbSNP: rs775908821; hg19: chr11-76901135;