rs1242495143
Positions:
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM1PP2
The NM_000540.3(RYR1):c.82C>T(p.Leu28Phe) variant causes a missense change. The variant allele was found at a frequency of 0.00000373 in 1,609,088 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. L28L) has been classified as Likely benign.
Frequency
Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000027 ( 0 hom. )
Consequence
RYR1
NM_000540.3 missense
NM_000540.3 missense
Scores
3
9
6
Clinical Significance
Conservation
PhyloP100: 4.94
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 3 ACMG points.
PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 3 benign, 7 uncertain in NM_000540.3
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), RYR1. . Gene score misZ 1.918 (greater than the threshold 3.09). Trascript score misZ 3.9788 (greater than threshold 3.09). GenCC has associacion of gene with King-Denborough syndrome, congenital multicore myopathy with external ophthalmoplegia, autosomal recessive centronuclear myopathy, RYR1-related myopathy, lethal multiple pterygium syndrome, malignant hyperthermia of anesthesia, benign Samaritan congenital myopathy, malignant hyperthermia, susceptibility to, 1, congenital myopathy with myasthenic-like onset, central core myopathy.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
RYR1 | NM_000540.3 | c.82C>T | p.Leu28Phe | missense_variant | 2/106 | ENST00000359596.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
RYR1 | ENST00000359596.8 | c.82C>T | p.Leu28Phe | missense_variant | 2/106 | 5 | NM_000540.3 | A2 | |
RYR1 | ENST00000355481.8 | c.82C>T | p.Leu28Phe | missense_variant | 2/105 | 1 | P4 | ||
RYR1 | ENST00000599547.6 | c.82C>T | p.Leu28Phe | missense_variant, NMD_transcript_variant | 2/80 | 2 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152172Hom.: 0 Cov.: 32
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GnomAD4 exome AF: 0.00000275 AC: 4AN: 1456916Hom.: 0 Cov.: 31 AF XY: 0.00000276 AC XY: 2AN XY: 724518
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GnomAD4 genome AF: 0.0000131 AC: 2AN: 152172Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74348
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:3Other:1
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
RYR1-related disorder Uncertain:1Other:1
not provided, no classification provided | phenotyping only | GenomeConnect - Invitae Patient Insights Network | - | Variant classified as Uncertain significance and reported on 11-27-2017 by Invitae. GenomeConnect-Invitae Patient Insights Network assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. Registry team members make no attempt to reinterpret the clinical significance of the variant. Phenotypic details are available under supporting information. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Feb 06, 2018 | 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. This missense change is located in a region of the RYR1 protein where a significant number of previously reported RYR1 missense mutations are found (PMID: 16084090). These observations suggest that a previously unreported missense substitution within this region may affect protein function, but experiments have not been done to test this possibility. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with RYR1-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces leucine with phenylalanine at codon 28 of the RYR1 protein (p.Leu28Phe). The leucine residue is moderately conserved and there is a small physicochemical difference between leucine and phenylalanine. - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Revvity Omics, Revvity | Jan 04, 2019 | - - |
Congenital myopathy with fiber type disproportion;C0751951:Central core myopathy;C1840365:King Denborough syndrome;C1850674:Congenital multicore myopathy with external ophthalmoplegia;C2930980:Malignant hyperthermia, susceptibility to, 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Oct 29, 2021 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Benign
CADD
Uncertain
DANN
Uncertain
DEOGEN2
Uncertain
.;D
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
LIST_S2
Uncertain
D;D
M_CAP
Pathogenic
D
MetaRNN
Uncertain
D;D
MetaSVM
Pathogenic
D
MutationAssessor
Benign
L;L
MutationTaster
Benign
D;D;D
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N
REVEL
Uncertain
Sift
Benign
T;T
Polyphen
D;D
Vest4
MutPred
Gain of catalytic residue at L28 (P = 0.0108);Gain of catalytic residue at L28 (P = 0.0108);
MVP
MPC
1.0
ClinPred
D
GERP RS
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gMVP
Splicing
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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