rs782503314
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1PM2PP3_Moderate
The NM_000260.4(MYO7A):c.1945C>T(p.Arg649Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000215 in 1,440,962 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R649Q) has been classified as Uncertain significance.
Frequency
Consequence
NM_000260.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MYO7A | NM_000260.4 | c.1945C>T | p.Arg649Trp | missense_variant | 17/49 | ENST00000409709.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MYO7A | ENST00000409709.9 | c.1945C>T | p.Arg649Trp | missense_variant | 17/49 | 1 | NM_000260.4 | ||
MYO7A | ENST00000458637.6 | c.1945C>T | p.Arg649Trp | missense_variant | 17/49 | 1 | P1 | ||
MYO7A | ENST00000409619.6 | c.1912C>T | p.Arg638Trp | missense_variant | 18/50 | 1 | |||
MYO7A | ENST00000409893.6 | c.10C>T | p.Arg4Trp | missense_variant | 1/11 | 5 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 exomes AF: 0.0000139 AC: 3AN: 215890Hom.: 0 AF XY: 0.0000171 AC XY: 2AN XY: 117094
GnomAD4 exome AF: 0.0000215 AC: 31AN: 1440962Hom.: 0 Cov.: 34 AF XY: 0.0000182 AC XY: 13AN XY: 714802
GnomAD4 genome ? Cov.: 33
ClinVar
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Jan 15, 2016 | The p.Arg649Trp variant in MYO7A has been reported in one paper without clinical information (Cremers 2007) and has been identified in 1/24258 European chromoso mes and 1/2556 East Asian chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org). Although this variant has been seen in the gen eral population, its frequency is not high enough to rule out a pathogenic role. Computational prediction tools and conservation analyses suggest that the p.Arg 649Trp variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, the clinical significance of the p.Arg649Trp variant is uncertain. - |
Autosomal dominant nonsyndromic hearing loss 11 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Apr 27, 2017 | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. - |
Autosomal recessive nonsyndromic hearing loss 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Apr 27, 2017 | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. - |
Usher syndrome type 1;C1838701:Autosomal recessive nonsyndromic hearing loss 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Counsyl | Apr 25, 2017 | - - |
Usher syndrome type 1B Uncertain:1
Uncertain significance, no assertion criteria provided | clinical testing | Natera, Inc. | Jul 22, 2020 | - - |
Usher syndrome type 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Apr 27, 2017 | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jan 03, 2024 | This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 649 of the MYO7A protein (p.Arg649Trp). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This missense change has been observed in individual(s) with autosomal recessive deafness (PMID: 34416374). ClinVar contains an entry for this variant (Variation ID: 229000). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt MYO7A protein function with a positive predictive value of 95%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at