rs1555784801
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PVS1PM2PP3_StrongPP5_Moderate
The NM_000540.3(RYR1):c.7926+2T>C variant causes a splice donor change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★).
Frequency
Genomes: not found (cov: 32)
Consequence
RYR1
NM_000540.3 splice_donor
NM_000540.3 splice_donor
Scores
4
2
1
Splicing: ADA: 0.9999
2
Clinical Significance
Conservation
PhyloP100: 7.85
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 Pathogenic. Variant got 16 ACMG points.
PVS1
?
Splicing variant, LoF is a know mechanism of disease, No cryptic splice site detected. Exon removal results in frameshift change.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
?
Variant 19-38502972-T-C is Pathogenic according to our data. Variant chr19-38502972-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 478282.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
RYR1 | NM_000540.3 | c.7926+2T>C | splice_donor_variant | ENST00000359596.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
RYR1 | ENST00000359596.8 | c.7926+2T>C | splice_donor_variant | 5 | NM_000540.3 | A2 | |||
RYR1 | ENST00000355481.8 | c.7926+2T>C | splice_donor_variant | 1 | P4 | ||||
RYR1 | ENST00000594335.5 | c.1378+2T>C | splice_donor_variant, NMD_transcript_variant | 1 | |||||
RYR1 | ENST00000599547.6 | c.7926+2T>C | splice_donor_variant, NMD_transcript_variant | 2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 37
GnomAD4 exome
Cov.:
37
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
RYR1-related disorder Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Aug 01, 2016 | This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a RYR1-related disease. This sequence change affects a donor splice site in intron 49 of the RYR1 gene. It is expected to disrupt mRNA splicing and likely results in an absent or disrupted protein product. In summary, donor and acceptor splice site variants are typically truncating (PMID: 16199547), and truncating variants in RYR1 are known to be pathogenic ((PMID: 20839240). However, without additional functional and/or genetic data, this variant has been classified as Likely Pathogenic. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
Cadd
Pathogenic
Dann
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
MutationTaster
Benign
D;D;D
GERP RS
Splicing
Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
dbscSNV1_RF
Pathogenic
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_DG_spliceai
Position offset: 46
Find out detailed SpliceAI scores and Pangolin per-transcript scores at