19-38517386-A-G
Variant summary
Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP6
The NM_000540.3(RYR1):c.9713A>G(p.Glu3238Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000321 in 1,613,676 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E3238K) has been classified 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: Likely_benign. The variant received -1 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes  0.000191  AC: 29AN: 151804Hom.:  0  Cov.: 31 show subpopulations 
GnomAD2 exomes  AF:  0.000257  AC: 64AN: 248662 AF XY:  0.000304   show subpopulations 
GnomAD4 exome  AF:  0.000334  AC: 488AN: 1461754Hom.:  0  Cov.: 34 AF XY:  0.000360  AC XY: 262AN XY: 727182 show subpopulations 
Age Distribution
GnomAD4 genome  0.000197  AC: 30AN: 151922Hom.:  0  Cov.: 31 AF XY:  0.000189  AC XY: 14AN XY: 74254 show subpopulations 
Age Distribution
ClinVar
Submissions by phenotype
not provided    Uncertain:3 
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Reported in an individual with late-onset myopathy in the published literature (Loseth et al., 2013); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; This variant is associated with the following publications: (PMID: 25637381, 23329375, 25747005, 23558838) -
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not specified    Uncertain:1Benign:1 
Variant identified in a genome or exome case(s) and assessed due to predicted null impact of the variant or pathogenic assertions in the literature or databases. Disclaimer: This variant has not undergone full assessment. The following are preliminary notes: This variant has been reported in one patient with axial myopathy and one who is malignant hyperthermia susceptible as determined by the Caffeine contracture test. The variant has a Max MAF of 0.1% in ExAC (19 South Asian alleles) and 0.1% in gnomAD (35 South Asian alleles). Frequency is too high for disease. It is classified with 1 star in ClinVar as VUS by GeneDx and as Likely benign by CSER_CC_NCGL. -
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Axial myopathy, late-onset    Benign:1 
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RYR1-related disorder    Benign:1 
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Malignant hyperthermia, susceptibility to, 1    Benign:1 
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Malignant hyperthermia of anesthesia    Benign:1 
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Multiminicore myopathy    Benign:1 
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Neuromuscular disease, congenital, with uniform type 1 fiber    Benign:1 
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Central core myopathy    Benign:1 
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Computational scores
Source: 
Splicing
 Find out detailed SpliceAI scores and Pangolin per-transcript scores at