rs111033219
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PM4_SupportingPP5
The NM_000260.4(MYO7A):c.1401_1403dup(p.Arg467_His468insGln) variant causes a inframe insertion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000025 in 1,602,066 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000014 ( 0 hom. )
Consequence
MYO7A
NM_000260.4 inframe_insertion
NM_000260.4 inframe_insertion
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: -0.859
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]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PM4
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Nonframeshift variant in NON repetitive region in NM_000260.4. Strenght limited to Supporting due to length of the change: 1aa.
PP5
?
Variant 11-77162176-G-GGCA is Pathogenic according to our data. Variant chr11-77162176-G-GGCA is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 43145.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=1, Uncertain_significance=2}.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MYO7A | NM_000260.4 | c.1401_1403dup | p.Arg467_His468insGln | inframe_insertion | 13/49 | ENST00000409709.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MYO7A | ENST00000409709.9 | c.1401_1403dup | p.Arg467_His468insGln | inframe_insertion | 13/49 | 1 | NM_000260.4 | ||
MYO7A | ENST00000409619.6 | c.1368_1370dup | p.Arg456_His457insGln | inframe_insertion | 14/50 | 1 | |||
MYO7A | ENST00000458637.6 | c.1401_1403dup | p.Arg467_His468insGln | inframe_insertion | 13/49 | 1 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000131 AC: 2AN: 152154Hom.: 0 Cov.: 33
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GnomAD4 exome AF: 0.00000138 AC: 2AN: 1449912Hom.: 0 Cov.: 31 AF XY: 0.00000139 AC XY: 1AN XY: 719580
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ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Pathogenic:1Uncertain:3
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
not provided Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Nov 14, 2023 | This variant, c.1401_1403dup, results in the insertion of 1 amino acid(s) of the MYO7A protein (p.Arg467_His468insGln), but otherwise preserves the integrity of the reading frame. This variant is not present in population databases (gnomAD no frequency). This variant has been observed in individual(s) with clinical features of MYO7A-related conditions (PMID: 8900236; Invitae). This variant is also known as 468+Gln. ClinVar contains an entry for this variant (Variation ID: 43145). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. - |
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Apr 05, 2018 | The p.Arg467_His468insGln variant in MYO7A has been reported in the heterozygous state in 2 individuals with Usher syndrome type 1 (Weston 1996). This variant w as absent from large population studies, though the ability of these studies to accurately detect indels may be limited. This variant is an insertion of 1 amino acid at position 467 and is not predicted to alter the protein reading-frame. I t is unclear if this insertion will impact the protein. In summary, the clinical significance of the p.Arg467_His468insGln variant is uncertain. ACMG/AMP Criter ia applied: PM2; PM4_Supporting. - |
Usher syndrome type 1;C1838701:Autosomal recessive nonsyndromic hearing loss 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Counsyl | Jun 19, 2017 | - - |
Usher syndrome type 1B Uncertain:1
Uncertain significance, no assertion criteria provided | clinical testing | Natera, Inc. | Jul 20, 2021 | - - |
Computational scores
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Find out detailed SpliceAI scores and Pangolin per-transcript scores at