rs193922853

Positions:

chr19-38565182-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.

This summary comes from the ClinGen Evidence Repository: 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 valine at codon 4283 of the RYR1 protein, p.(Glu4283Val). This variant was not present in a large population database (gnomAD) at the time this variant was interpreted. This variant has been reported in one individual with a personal or family history of a malignant hyperthermia reaction, a second variant of uncertain significance, p.(Val218Ile), was also identified. This individual did not have an in vitro contracture test (IVCT) or a caffeine halothane contracture test (CHCT) result, PS4 was not implemented (PMID:16732084). 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 of 0.561 supports neither a pathogenic nor a benign status for this variant. This variant has been classified as a Variant of Unknown Significance. Criteria implemented: none. LINK:https://erepo.genome.network/evrepo/ui/classification/CA024011/MONDO:0018493/012

Frequency

Genomes: 𝑓 0.0000069 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000081 ( 0 hom. )

Consequence

RYR1
NM_000540.3 missense

Scores

Clinical Significance

Uncertain significance reviewed by expert panel U:1O:1

Conservation

PhyloP100: 1.98

Variant links:

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]

RYR1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RYR1	NM_000540.3 linkuse as main transcript	c.12848A>T	p.Glu4283Val	missense_variant	91/106	ENST00000359596.8	NP_000531.2	P21817-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RYR1	ENST00000359596.8 linkuse as main transcript	c.12848A>T	p.Glu4283Val	missense_variant	91/106	5	NM_000540.3	ENSP00000352608.2		P21817-1

Frequencies

GnomAD3 genomes

AF:

0.00000685

AC:

AN:

145888

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000199

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000809

AC:

AN:

989056

Hom.:

Cov.:

AF XY:

0.00000643

AC XY:

AN XY:

466554

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000446

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000685

AC:

AN:

145888

Hom.:

Cov.:

AF XY:

0.0000141

AC XY:

AN XY:

71052

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000199

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1Other:1

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

Malignant hyperthermia of anesthesia

Uncertain: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 valine at codon 4283 of the RYR1 protein, p.(Glu4283Val). This variant was not present in a large population database (gnomAD) at the time this variant was interpreted. This variant has been reported in one individual with a personal or family history of a malignant hyperthermia reaction, a second variant of uncertain significance, p.(Val218Ile), was also identified. This individual did not have an in vitro contracture test (IVCT) or a caffeine halothane contracture test (CHCT) result, PS4 was not implemented (PMID: 16732084). 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 of 0.561 supports neither a pathogenic nor a benign status for this variant. This variant has been classified as a Variant of Unknown Significance. Criteria implemented: none. -

not provided

Other:1

not provided, no classification provided

literature only

Leiden Muscular Dystrophy (RYR1)

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Uncertain

0.020

CADD

Benign

DANN

Benign

0.81

DEOGEN2

Uncertain

0.59

.;D

Eigen

Benign

-0.75

Eigen_PC

Benign

-0.76

FATHMM_MKL

Benign

0.39

LIST_S2

Benign

0.43

T;T

M_CAP

Pathogenic

0.99

MetaRNN

Pathogenic

0.76

D;D

MetaSVM

Uncertain

0.094

MutationAssessor

Benign

0.90

.;L

PrimateAI

Pathogenic

0.89

PROVEAN

Benign

-1.7

N;N

REVEL

Uncertain

0.56

Sift

Benign

0.14

T;T

Polyphen

0.0

B;B

Vest4

0.41

MutPred

0.70

.;Gain of MoRF binding (P = 0.0617);

MVP

0.95

MPC

0.84

ClinPred

0.16

GERP RS

0.69

Varity_R

0.081

gMVP

0.53

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over