19-38473635-A-G

Position:

• chr19-38473635-A-G

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BA1

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 Serine with Glycine at codon 1342 of the RYR1 protein, p.(Ser1342Gly). The maximum allele frequency for this variant among the six major gnomAD populations is AFR: 0.1566, which is considered to be too common for a pathogenic variant causing autosomal dominantly inherited MHS, BA1. This variant has been classified as Benign. Criteria implemented: BA1. LINK:https://erepo.genome.network/evrepo/ui/classification/CA024415/MONDO:0007783/012

• Frequency:
  • Genomes: 𝑓 0.044 (468 hom., cov: 31)
  • Exomes 𝑓: 0.0049 (465 hom.)
• Consequence: RYR1 NM_000540.3 missense
• Clinical Significance: Benign reviewed by expert panel B:16 O:1
• Conservation: PhyloP100: 4.27

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]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RYR1	NM_000540.3	c.4024A>G	p.Ser1342Gly	missense_variant	28/106	ENST00000359596.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RYR1	ENST00000359596.8	c.4024A>G	p.Ser1342Gly	missense_variant	28/106	5	NM_000540.3	A2
RYR1	ENST00000355481.8	c.4024A>G	p.Ser1342Gly	missense_variant	28/105	1		P4
RYR1	ENST00000599547.6	c.4024A>G	p.Ser1342Gly	missense_variant, NMD_transcript_variant	28/80	2

Frequencies

GnomAD3 genomes AF: 0.0437 AC: 6646 AN: 152028 Hom.: 462 Cov.: 31

Gnomad AFR AF: 0.151

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0163

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00124

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.0253

Gnomad NFE AF: 0.000588

Gnomad OTH AF: 0.0364

GnomAD3 exomes AF: 0.0105 AC: 1667 AN: 159276 Hom.: 119 AF XY: 0.00799 AC XY: 686 AN XY: 85860

Gnomad AFR exome AF: 0.159

Gnomad AMR exome AF: 0.0100

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000380

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000602

Gnomad OTH exome AF: 0.00666

GnomAD4 exome AF: 0.00487 AC: 6859 AN: 1408394 Hom.: 465 Cov.: 33 AF XY: 0.00423 AC XY: 2940 AN XY: 695692

Gnomad4 AFR exome AF: 0.160

Gnomad4 AMR exome AF: 0.00986

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000436

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000479

Gnomad4 OTH exome AF: 0.0124

GnomAD4 genome AF: 0.0439 AC: 6674 AN: 152144 Hom.: 468 Cov.: 31 AF XY: 0.0428 AC XY: 3183 AN XY: 74394

Gnomad4 AFR AF: 0.152

Gnomad4 AMR AF: 0.0162

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000830

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000588

Gnomad4 OTH AF: 0.0360

Alfa AF: 0.0142 Hom.: 37

Bravo AF: 0.0509

ESP6500AA AF: 0.107 AC: 450

ESP6500EA AF: 0.000618 AC: 5

ExAC AF: 0.00977 AC: 1088

Asia WGS AF: 0.0120 AC: 40 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:16 Other:1

Revision: reviewed by expert panel

Submissions by phenotype

not specified Benign:7

Benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	Apr 03, 2018	- -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Nov 04, 2019	- -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jan 06, 2017	- -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	May 06, 2016	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Feb 08, 2013	- -

Malignant hyperthermia, susceptibility to, 1 Benign:5

Benign, criteria provided, single submitter	research	Biesecker Lab/Clinical Genomics Section, National Institutes of Health	Jul 01, 2013	- -
Benign, reviewed by expert panel	curation	ClinGen Malignant Hyperthermia Susceptibility Variant Curation Expert Panel, ClinGen	Mar 17, 2021	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 Serine with Glycine at codon 1342 of the RYR1 protein, p.(Ser1342Gly). The maximum allele frequency for this variant among the six major gnomAD populations is AFR: 0.1566, which is considered to be too common for a pathogenic variant causing autosomal dominantly inherited MHS, BA1. This variant has been classified as Benign. Criteria implemented: BA1. -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Mar 06, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Feb 05, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Oct 16, 2023	- -

not provided Benign:1 Other:1

not provided, no classification provided	literature only	Leiden Muscular Dystrophy (RYR1)	-	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 06, 2023	- -

Congenital multicore myopathy with external ophthalmoplegia Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Mar 06, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Central core myopathy Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Mar 06, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

RYR1-related disorder Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.045
BayesDel_addAF	Benign	-0.53	T
BayesDel_noAF	Benign	-0.39
CADD	Benign	21
DANN	Benign	0.86
DEOGEN2	Benign	0.26	.;T
Eigen	Benign	-0.63
Eigen_PC	Benign	-0.44
FATHMM_MKL	Benign	0.023	N
LIST_S2	Benign	0.25	T;T
MetaRNN	Benign	0.0016	T;T
MetaSVM	Benign	-0.91	T
MutationAssessor	Benign	-1.4	N;N
MutationTaster	Benign	1.0	P;P;P
PrimateAI	Benign	0.48	T
PROVEAN	Benign	0.23	N;N
REVEL	Uncertain	0.29
Sift	Benign	0.47	T;T
Polyphen		0.0	B;B
Vest4		0.043
MPC		0.28
ClinPred		0.0024	T
GERP RS		4.0
Varity_R		0.059
gMVP		0.15

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

Other links and lift over

dbSNP: rs34694816; hg19: chr19-38964275;