rs112772310
Variant summary
Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PP2PP3_Strong
The NM_000540.3(RYR1):c.8638G>A(p.Glu2880Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000434 in 1,613,980 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
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)
Exomes 𝑓: 0.0000041 ( 0 hom. )
Consequence
RYR1
NM_000540.3 missense
NM_000540.3 missense
Scores
10
6
1
Clinical Significance
Conservation
PhyloP100: 9.86
Genes affected
RYR1 (HGNC:10483): (ryanodine receptor 1) This gene encodes a ryanodine receptor found in skeletal muscle. The encoded protein functions as a calcium release channel in the sarcoplasmic reticulum but also serves to connect the sarcoplasmic reticulum and transverse tubule. Mutations in this gene are associated with malignant hyperthermia susceptibility, central core disease, and minicore myopathy with external ophthalmoplegia. Alternatively spliced transcripts encoding different isoforms have been described. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 5 ACMG points.
PP2
?
Missense variant where missense usually causes diseases, RYR1
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.975
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
RYR1 | NM_000540.3 | c.8638G>A | p.Glu2880Lys | missense_variant | 56/106 | ENST00000359596.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
RYR1 | ENST00000359596.8 | c.8638G>A | p.Glu2880Lys | missense_variant | 56/106 | 5 | NM_000540.3 | A2 | |
RYR1 | ENST00000355481.8 | c.8638G>A | p.Glu2880Lys | missense_variant | 56/105 | 1 | P4 | ||
RYR1 | ENST00000594335.5 | c.2092G>A | p.Glu698Lys | missense_variant, NMD_transcript_variant | 17/49 | 1 | |||
RYR1 | ENST00000599547.6 | c.8638G>A | p.Glu2880Lys | missense_variant, NMD_transcript_variant | 56/80 | 2 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152110Hom.: 0 Cov.: 31
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GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251146Hom.: 0 AF XY: 0.00000737 AC XY: 1AN XY: 135770
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GnomAD4 exome AF: 0.00000410 AC: 6AN: 1461870Hom.: 0 Cov.: 36 AF XY: 0.00000688 AC XY: 5AN XY: 727234
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ClinVar
Significance: Uncertain significance
Submissions summary: Pathogenic:1Uncertain:3Other:1
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
Malignant hyperthermia of anesthesia Pathogenic:1Uncertain: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 glutamic acid with lysine at codon 2880 of the RYR1 protein, p.(Glu2880Lys). The maximum allele frequency for this variant among the six major gnomAD populations is NFE: 0.000009, a frequency consistent with pathogenicity for MHS. This variant has been reported in two unrelated individuals who have a personal or family history of a malignant hyperthermia reaction, both of these individuals had a positive in vitro contracture test (IVCT) or caffeine halothane contracture test (CHCT) result (if the proband was unavailable for testing, a positive diagnostic test result in a mutation-positive relative was counted), however, one of these individuals had a second variant of uncertain significance in RYR1 (p.Glu3290Lys) and was not counted toward PS4, PS4_Supporting was implemented (PMID:19191329). No functional studies were identified for this variant. This variant does not reside in a hotspot for pathogenic variants that contribute to MHS. A REVEL score >0.85 (0.901) supports a pathogenic status for this variant, PP3_Moderate. This variant has been classified as a Variant of Unknown Significance. Criteria implemented: PS4_Supporting, PP3_Moderate. - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Jul 20, 2016 | The p.Glu2880Lys variant in RYR1 has been reported in 2 Swiss individuals with malignant hyperthermia, and segregated with disease in 2 affected relatives from 1 family (Levano 2009). It was absent from large population studies. Computational prediction tools and conservation analysis suggest that the p.Glu2880Lys variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, while there is some suspicion for a pathogenic role, the clinical significance of the p.Glu2880Lys variant is uncertain. - |
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Jan 22, 2024 | Variant summary: RYR1 c.8638G>A (p.Glu2880Lys) results in a conservative amino acid change located in the Ryanodine receptor Ryr domain (IPR003032) of the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4e-06 in 251146 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.8638G>A has been reported in the literature in individuals affected with Malignant Hyperthermia Susceptibility without strong evidence of causality (Robinson_2006, Levano_2009). These reports do not provide unequivocal conclusions about association of the variant with Malignant Hyperthermia Susceptibility. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 16917943, 19191329). ClinVar contains an entry for this variant (Variation ID: 133232). Based on the evidence outlined above, the variant was classified as uncertain significance. - |
RYR1-related disorder Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jul 25, 2022 | This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 2880 of the RYR1 protein (p.Glu2880Lys). This variant is present in population databases (rs112772310, gnomAD 0.0009%). This missense change has been observed in individual(s) with malignant hyperthermia (PMID: 16917943, 19191329). ClinVar contains an entry for this variant (Variation ID: 133232). 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 Other:1
not provided, no classification provided | literature only | Leiden Muscular Dystrophy (RYR1) | - | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Uncertain
Dann
Uncertain
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
LIST_S2
Pathogenic
D;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D
MetaSVM
Pathogenic
D
MutationAssessor
Uncertain
M;M
MutationTaster
Benign
D;D;D
PrimateAI
Pathogenic
D
PROVEAN
Uncertain
D;D
REVEL
Pathogenic
Sift
Uncertain
D;D
Polyphen
D;B
Vest4
MutPred
Gain of MoRF binding (P = 0.004);Gain of MoRF binding (P = 0.004);
MVP
MPC
0.34
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
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Score
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at