chr19-38512468-G-A
Variant summary
Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate
The NM_000540.3(RYR1):c.9457G>A(p.Gly3153Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000744 in 1,611,940 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 (★★).
Frequency
Consequence
NM_000540.3 missense
Scores
Clinical Significance
Conservation
Publications
- malignant hyperthermia, susceptibility to, 1Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Genomics England PanelApp, Ambry Genetics
- congenital multicore myopathy with external ophthalmoplegiaInheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp
- RYR1-related myopathyInheritance: AR, AD Classification: DEFINITIVE Submitted by: ClinGen
- central core myopathyInheritance: AD, AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp
- King-Denborough syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- malignant hyperthermia of anesthesiaInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- autosomal recessive centronuclear myopathyInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- benign Samaritan congenital myopathyInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- congenital myopathy with myasthenic-like onsetInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- lethal multiple pterygium syndromeInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Uncertain_significance. The variant received 2 ACMG points.
Variant Effect in Transcripts
ACMG analysis was done for transcript: NM_000540.3. You can select a different transcript below to see updated ACMG assignments.
RefSeq Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| RYR1 | NM_000540.3 | MANE Select | c.9457G>A | p.Gly3153Arg | missense | Exon 63 of 106 | NP_000531.2 | ||
| RYR1 | NM_001042723.2 | c.9457G>A | p.Gly3153Arg | missense | Exon 63 of 105 | NP_001036188.1 |
Ensembl Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| RYR1 | ENST00000359596.8 | TSL:5 MANE Select | c.9457G>A | p.Gly3153Arg | missense | Exon 63 of 106 | ENSP00000352608.2 | ||
| RYR1 | ENST00000355481.8 | TSL:1 | c.9457G>A | p.Gly3153Arg | missense | Exon 63 of 105 | ENSP00000347667.3 | ||
| RYR1 | ENST00000594335.6 | TSL:1 | n.*200G>A | non_coding_transcript_exon | Exon 62 of 103 | ENSP00000470927.2 |
Frequencies
GnomAD3 genomes AF: 0.0000263 AC: 4AN: 152216Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000161 AC: 4AN: 248494 AF XY: 0.0000148 show subpopulations
GnomAD4 exome AF: 0.00000548 AC: 8AN: 1459724Hom.: 0 Cov.: 34 AF XY: 0.00000826 AC XY: 6AN XY: 726300 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000263 AC: 4AN: 152216Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74344 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Malignant hyperthermia, susceptibility to, 1 Uncertain:1
This missense variant replaces glycine with arginine at codon 3153 of the RYR1 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported to not segregate with malignant hyperthermia susceptibility in one study, where this variant was described as a potential polymorphism (PMID: 19191333). This variant has been reported in individuals with congenital myopathy (PMID: 25214167, 29417091). This variant has been identified in 4/248494 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.
RYR1-related disorder Uncertain:1
This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 3153 of the RYR1 protein (p.Gly3153Arg). This variant is present in population databases (rs779410371, gnomAD 0.007%). This missense change has been observed in individual(s) with congenital myopathy and/or malignant hyperthermia susceptibility (MHS) (PMID: 19191333, 25214167, 29417091). ClinVar contains an entry for this variant (Variation ID: 478300). 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 RYR1 protein function. 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.
not provided Uncertain:1
PP3
Central core myopathy Uncertain:1
The variant is observed at an extremely low frequency in the gnomAD v2.1.1 dataset (total allele frequency: 0.002%). In silico tool predictions suggest damaging effect of the variant on gene or gene product (REVEL: 0.92). However, the evidence of pathogenicity is insufficient at this time. Therefore, this variant is classified as uncertain significance according to the recommendation of ACMG/AMP guideline.
Congenital myopathy with fiber type disproportion;C1840365:King Denborough syndrome;C1850674:Congenital multicore myopathy with external ophthalmoplegia;C2930980:Malignant hyperthermia, susceptibility to, 1;C5830701:Central core myopathy Uncertain:1
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at