rs118192135
Variant summary
Our verdict is Pathogenic. Variant got 15 ACMG points: 15P and 0B. PM1PM2PM5PP2PP3_StrongPP5_Strong
The NM_000540.3(RYR1):c.13913G>A(p.Gly4638Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,888 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. G4638S) has been classified as Likely pathogenic.
Frequency
Consequence
NM_000540.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 15 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
RYR1 | NM_000540.3 | c.13913G>A | p.Gly4638Asp | missense_variant | 95/106 | ENST00000359596.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
RYR1 | ENST00000359596.8 | c.13913G>A | p.Gly4638Asp | missense_variant | 95/106 | 5 | NM_000540.3 | A2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461888Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 727246
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
not provided Pathogenic:2Other:1
Pathogenic, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | Nov 22, 2013 | - - |
not provided, no classification provided | literature only | Leiden Muscular Dystrophy (RYR1) | - | - - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Revvity Omics, Revvity | Sep 28, 2022 | - - |
Central core myopathy Pathogenic:1
Pathogenic, no assertion criteria provided | curation | GeneReviews | May 11, 2010 | - - |
Congenital myopathy with fiber type disproportion Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Centre for Mendelian Genomics, University Medical Centre Ljubljana | Jan 09, 2019 | This variant was classified as: Likely pathogenic. The following ACMG criteria were applied in classifying this variant: PM2,PP2,PP3,PS1,PM6. - |
RYR1-Related Disorders Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Dec 31, 2022 | This variant is not present in population databases (gnomAD no frequency). This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 4638 of the RYR1 protein (p.Gly4638Asp). This missense change has been observed in individual(s) with clinical features of autosomal dominant RYR1-related conditions (PMID: 12565913, 14985404, 28357410). For these reasons, this variant has been classified as Pathogenic. This variant disrupts the p.Gly4638Ser amino acid residue in RYR1. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 16621918, 23394784). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. 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. ClinVar contains an entry for this variant (Variation ID: 65941). - |
Malignant hyperthermia of anesthesia Uncertain:1
Uncertain significance, reviewed by expert panel | curation | ClinGen Malignant Hyperthermia Susceptibility Variant Curation Expert Panel, ClinGen | Apr 06, 2023 | This pathogenicity assessment is relevant only for malignant hyperthermia susceptibility (MHS) inherited in an autosomal dominant pattern. Variants in RYR1 can also cause other myopathies inherited in an autosomal dominant pattern or in an autosomal recessive pattern. Some of these disorders may predispose individuals to malignant hyperthermia. RYR1 variants may also contribute to a malignant hyperthermia reaction in combination with other genetic and non-genetic factors and the clinician needs to consider such factors in making management decisions. This sequence variant predicts a substitution of glycine with aspartic acid at codon 4638 of the RYR1 protein, p.(Gly4638Asp). This variant was not present in a large population database (gnomAD) at the time this variant was interpreted. This variant has been reported in one individual with a personal or family history of a malignant hyperthermia reaction. This individual did not have an in vitro contracture test (IVCT) or a caffeine halothane contracture test (CHCT) result, PS4 not implemented (PMID: 16732084). No functional studies were identified for this variant. This variant resides in a region of RYR1 considered to be a hotspot for pathogenic variants that contribute to MHS, PM1_Supporting (PMID: 21118704). A REVEL score >0.85 (0.917) supports a pathogenic status for this variant, PP3_Moderate. This variant has been classified as a Variant of Unknown Significance. Criteria implemented: PM1_Supporting, PP3_Moderate. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at