rs759306349
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 1P and 0B. PP2
The NM_000540.3(RYR1):c.7072A>C(p.Ile2358Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000138 in 1,599,934 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_000540.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 1 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
RYR1 | ENST00000359596.8 | c.7072A>C | p.Ile2358Leu | missense_variant | Exon 44 of 106 | 5 | NM_000540.3 | ENSP00000352608.2 | ||
RYR1 | ENST00000355481.8 | c.7072A>C | p.Ile2358Leu | missense_variant | Exon 44 of 105 | 1 | ENSP00000347667.3 | |||
RYR1 | ENST00000594335.5 | n.523A>C | non_coding_transcript_exon_variant | Exon 5 of 49 | 1 | ENSP00000470927.2 | ||||
RYR1 | ENST00000599547.6 | n.7072A>C | non_coding_transcript_exon_variant | Exon 44 of 80 | 2 | ENSP00000471601.2 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152138Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000418 AC: 1AN: 239514Hom.: 0 AF XY: 0.00000764 AC XY: 1AN XY: 130870
GnomAD4 exome AF: 0.0000138 AC: 20AN: 1447796Hom.: 0 Cov.: 33 AF XY: 0.0000153 AC XY: 11AN XY: 720704
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152138Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74318
ClinVar
Submissions by phenotype
not provided Uncertain:2
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Malignant hyperthermia, susceptibility to, 1 Uncertain:1
This missense variant replaces isoleucine with leucine at codon 2358 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 in an individual with malignant hyperthermia susceptibility (PMID: 23558838, 31559918). This variant has been identified in 1/239514 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 isoleucine with leucine at codon 2358 of the RYR1 protein (p.Ile2358Leu). The isoleucine residue is highly conserved and there is a small physicochemical difference between isoleucine and leucine. This variant is present in population databases (rs759306349, ExAC 0.003%). This variant has been observed in individual(s) with clinical features of malignant hyperthermia (PMID: 23558838). ClinVar contains an entry for this variant (Variation ID: 590581). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). 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. -
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
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at