rs777016690
Variant summary
Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1PP2PP3PP5
The NM_000540.3(RYR1):c.1198G>A(p.Ala400Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000889 in 1,461,878 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 Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. A400A) has been classified as Likely benign.
Frequency
Consequence
NM_000540.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 5 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
RYR1 | NM_000540.3 | c.1198G>A | p.Ala400Thr | missense_variant | 12/106 | ENST00000359596.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
RYR1 | ENST00000359596.8 | c.1198G>A | p.Ala400Thr | missense_variant | 12/106 | 5 | NM_000540.3 | A2 | |
RYR1 | ENST00000355481.8 | c.1198G>A | p.Ala400Thr | missense_variant | 12/105 | 1 | P4 | ||
RYR1 | ENST00000599547.6 | c.1198G>A | p.Ala400Thr | missense_variant, NMD_transcript_variant | 12/80 | 2 |
Frequencies
GnomAD3 genomes ? Cov.: 31
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251420Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135904
GnomAD4 exome AF: 0.00000889 AC: 13AN: 1461878Hom.: 0 Cov.: 31 AF XY: 0.00000825 AC XY: 6AN XY: 727240
GnomAD4 genome ? Cov.: 31
ClinVar
Submissions by phenotype
not provided Pathogenic:1Uncertain:1
Likely pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Jan 17, 2023 | Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Identified in a patient with myopathy in published literature (PMID: 31069529); This variant is associated with the following publications: (PMID: 31069529) - |
Uncertain significance, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | Jul 18, 2016 | - - |
RYR1-related disorder Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jan 31, 2024 | This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 400 of the RYR1 protein (p.Ala400Thr). This variant is present in population databases (rs777016690, gnomAD 0.003%). This missense change has been observed in individual(s) with clinical features of autosomal recessive RYR1-related myopathy and/or myopathy (PMID: 1069529; Invitae). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 590393). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on RYR1 protein function. For these reasons, this variant has been classified as Pathogenic. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at