rs1555090294

Variant names:

• chr11-77189386-C-A
• rs1555090294
• NM_000260.4:c.3546C>A

Your query was ambiguous. Multiple possible variants found:

• chr11-77189386-C-A
• chr11-77189386-C-T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM3_Strong PP3 PP4 PM2_Supporting

This summary comes from the ClinGen Evidence Repository: The p.Asn1182Lys variant in MYO7A is a missense variant predicted to cause substitution of asparagine to lysine at amino acid 1182. This variant is absent from large population studies (PM2_Supporting, gnomAD v2.1.1). The computational predictor REVEL gives a score of 0.833 which is above the threshold necessary to apply PP3; however, this information is not predictive of pathogenicity on its own (PP3). This variant has been detected in at least four probands with AR Usher syndrome. Two patients were homozygous for the variant, while the other two were compound heterozygous with a pathogenic or likely pathogenic variant; however only one was confirmed trans (c.721C>T (p.Arg241Cys), 2.0 PM3_Strong points, PMID:27460420, 28041643, 31479088, Invitae Internal Data (SCV001211338.4)). At least one patient with a variant identified in this gene displayed sensorineural hearing loss and retinitis pigmentosa, features consistent with Usher syndrome (PP4). The variant has been reported to segregate with AR Usher syndrome in 1 affected family member from 1 family (PP1; PMID:31479088). In summary, this variant meets the criteria to be classified as likely pathogenic for autosomal recessive Usher syndrome based on ACMG/AMP criteria applied, as specified by the ClinGen Hearing Loss VCEP; PM2_Supporting, PP3, PM3_Strong, PP1, PP4. (The ClinGen Hearing Loss VCEP Specifications Version 2; 06/27/2023). LINK:https://erepo.genome.network/evrepo/ui/classification/CA381946913/MONDO:0019501/005

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: MYO7A NM_000260.4 missense
• Clinical Significance: Likely pathogenic reviewed by expert panel P:4 U:2
• Conservation: PhyloP100: 0.445
• 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

ENSG00000296534 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM2: For more information check the summary or visit ClinGen Evidence Repository.
• PM3: For more information check the summary or visit ClinGen Evidence Repository.
• PP3: For more information check the summary or visit ClinGen Evidence Repository.
• PP4: 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.3546C>A	p.Asn1182Lys	missense	Exon 28 of 49	NP_000251.3	Q13402-1
	MYO7A	NM_001127180.2		c.3546C>A	p.Asn1182Lys	missense	Exon 28 of 49	NP_001120652.1	Q13402-2
	MYO7A	NM_001369365.1		c.3513C>A	p.Asn1171Lys	missense	Exon 29 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.3546C>A	p.Asn1182Lys	missense	Exon 28 of 49	ENSP00000386331.3	Q13402-1
	MYO7A	ENST00000458637.6	TSL:1	c.3546C>A	p.Asn1182Lys	missense	Exon 28 of 49	ENSP00000392185.2	Q13402-2
	MYO7A	ENST00000409619.6	TSL:1	c.3513C>A	p.Asn1171Lys	missense	Exon 29 of 50	ENSP00000386635.2	Q13402-8

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461540 Hom.: 0 Cov.: 31 AF XY: 0.00000688 AC XY: 5 AN XY: 727028

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53244

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000809 AC: 9 AN: 1111864

Other (OTH) AF: 0.00 AC: 0 AN: 60372

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Likely pathogenic

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
3	-	-	Usher syndrome (3)
1	1	-	not provided (2)
-	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	1.0
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Uncertain	0.050
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.91	D
Eigen	Pathogenic	0.70
Eigen_PC	Uncertain	0.57
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Pathogenic	0.64	D
MetaRNN	Pathogenic	0.93	D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	4.1	H
PhyloP100		0.45
PrimateAI	Pathogenic	0.83	D
PROVEAN	Pathogenic	-5.8	D
REVEL	Pathogenic	0.83
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0030	D
Polyphen		1.0	D
Vest4		0.96
MutPred		0.76		Gain of methylation at N1182 (P = 0.0076)
MVP		0.96
MPC		0.50
ClinPred		1.0	D
GERP RS		3.6
Varity_R		0.94
gMVP		0.85
Mutation Taster		=0/100	disease causing (ClinVar)

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: rs1555090294; hg19: chr11-76900431;