11-22274650-A-G
Variant summary
Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM1PP3_Moderate
The NM_213599.3(ANO5):c.2317A>G(p.Met773Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000304 in 1,613,318 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_213599.3 missense
Scores
Clinical Significance
Conservation
Publications
- autosomal recessive limb-girdle muscular dystrophyInheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
- gnathodiaphyseal dysplasiaInheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P
- autosomal recessive limb-girdle muscular dystrophy type 2LInheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P
- Miyoshi muscular dystrophy 3Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
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ACMG classification
Our verdict: Uncertain_significance. The variant received 4 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ANO5 | NM_213599.3 | c.2317A>G | p.Met773Val | missense_variant | Exon 20 of 22 | ENST00000324559.9 | NP_998764.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| ANO5 | ENST00000324559.9 | c.2317A>G | p.Met773Val | missense_variant | Exon 20 of 22 | 1 | NM_213599.3 | ENSP00000315371.9 |
Frequencies
GnomAD3 genomes AF: 0.00000658 AC: 1AN: 151912Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000159 AC: 4AN: 251252 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.0000328 AC: 48AN: 1461406Hom.: 0 Cov.: 33 AF XY: 0.0000330 AC XY: 24AN XY: 727006 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000658 AC: 1AN: 151912Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74190 show subpopulations
ClinVar
Submissions by phenotype
Limb-girdle muscular dystrophy, recessive Uncertain:1
not provided Uncertain:1
ANO5-Related Muscle Diseases Uncertain:1
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.
Gnathodiaphyseal dysplasia;C1969785:Autosomal recessive limb-girdle muscular dystrophy type 2L Uncertain:1
This sequence change replaces methionine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 773 of the ANO5 protein (p.Met773Val). This variant is present in population databases (rs751028884, gnomAD 0.004%). This missense change has been observed in individual(s) with clinical features of autosomal recessive ANO5-related conditions (PMID: 32367299; internal data). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 304109). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt ANO5 protein function with a negative 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.
Miyoshi myopathy Uncertain:1
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at