rs150993059

Positions:

chr19-38466176-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PP2PP3

The NM_000540.3(RYR1):c.2956C>T(p.Arg986Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000143 in 1,613,514 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).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

RYR1
NM_000540.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:7

Conservation

PhyloP100: 1.70

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:

RYR1 (HGNC:):

RYR1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), RYR1. . Gene score misZ 1.918 (greater than the threshold 3.09). Trascript score misZ 3.9788 (greater than threshold 3.09). GenCC has associacion of gene with King-Denborough syndrome, congenital multicore myopathy with external ophthalmoplegia, autosomal recessive centronuclear myopathy, RYR1-related myopathy, lethal multiple pterygium syndrome, malignant hyperthermia of anesthesia, benign Samaritan congenital myopathy, malignant hyperthermia, susceptibility to, 1, congenital myopathy with myasthenic-like onset, central core myopathy.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.809

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RYR1	NM_000540.3 linkuse as main transcript	c.2956C>T	p.Arg986Cys	missense_variant	24/106	ENST00000359596.8	NP_000531.2	P21817-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
RYR1	ENST00000359596.8 linkuse as main transcript	c.2956C>T	p.Arg986Cys	missense_variant	24/106	5	NM_000540.3	ENSP00000352608.2	P21817-1
RYR1	ENST00000355481.8 linkuse as main transcript	c.2956C>T	p.Arg986Cys	missense_variant	24/105	1		ENSP00000347667.3	P21817-2
RYR1	ENST00000594111.1 linkuse as main transcript	n.49C>T		non_coding_transcript_exon_variant	1/2	2
RYR1	ENST00000599547.6 linkuse as main transcript	n.2956C>T		non_coding_transcript_exon_variant	24/80	2		ENSP00000471601.2	M0R127

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152184

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000603

AC:

AN:

248634

Hom.:

AF XY:

0.0000519

AC XY:

AN XY:

134824

show subpopulations

Gnomad AFR exome

AF:

0.0000625

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000125

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000149

AC:

218

AN:

1461212

Hom.:

Cov.:

AF XY:

0.000136

AC XY:

AN XY:

726980

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000181

Gnomad4 OTH exome

AF:

0.000265

GnomAD4 genome

AF:

0.0000788

AC:

AN:

152302

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000109

Hom.:

Bravo

AF:

0.0000642

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.0000412

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:7

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Malignant hyperthermia, susceptibility to, 1

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Feb 15, 2023	This missense variant replaces arginine with cysteine at codon 986 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 not been reported in individuals affected with autosomal dominant malignant hyperthermia susceptibility in the literature, although it is associated with other phenotypes (ClinVar Variation ID: 161367). This variant has been identified in 17/280012 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Due to insufficient evidence, this variant is classified as a Variant of Uncertain Significance for autosomal dominant malignant hyperthermia. -
Uncertain significance, criteria provided, single submitter	research	Biesecker Lab/Clinical Genomics Section, National Institutes of Health	Jul 01, 2013	- -
Uncertain significance, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Sep 09, 2024	This missense variant replaces arginine with cysteine at codon 986 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 not been reported in individuals affected with autosomal dominant malignant hyperthermia susceptibility in the literature, although it is associated with other phenotypes (ClinVar Variation ID: 161367). This variant has been identified in 17/280012 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Due to insufficient evidence, this variant is classified as a Variant of Uncertain Significance for autosomal dominant malignant hyperthermia. -

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Oct 18, 2019	Not observed at a significant frequency in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Reported in the compound heterozygous state in an individual with congenital myopathy (Klein et al., 2012); This variant is associated with the following publications: (PMID: 26332594, 22473935, 24195946, 25637381, 24055113) -
Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Sep 10, 2019	- -

RYR1-related disorder

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 27, 2024

This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 986 of the RYR1 protein (p.Arg986Cys). This variant is present in population databases (rs150993059, gnomAD 0.01%). This missense change has been observed in individual(s) with autosomal recessive congenital myopathy (PMID: 22473935). 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: 161367). 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. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Oct 16, 2024

Variant summary: RYR1 c.2956C>T (p.Arg986Cys) results in a non-conservative amino acid change located in the Ryanodine receptor Ryr domain (IPR003032) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 6e-05 in 248634 control chromosomes, predominantly at a frequency of 0.00012 within the Non-Finnish European subpopulation in the gnomAD database. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 1.4-fold of the estimated maximal expected allele frequency for a pathogenic variant in RYR1 causing Malignant Hyperthermia Susceptibility phenotype (8.8e-05). The allele frequency suggests that the variant is not causal for a dominant phenotype with high penetrance, and early onset disease, however the association with recessive conditions cannot be excluded based on this frequency. The variant, c.2956C>T, has been reported in the literature in a compound heterozygous individual affected with Myopathy (Klein_2012), who also carried a loss-of-function variant classified as 'pathogenic' by our lab for recessive RYR1-related myopathy. These data do not allow clear conclusions about variant significance. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 22473935, 24195946). ClinVar contains an entry for this variant (Variation ID: 161367). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Congenital myopathy

Uncertain:1

Uncertain significance, no assertion criteria provided

research

CSER _CC_NCGL, University of Washington

Jun 01, 2014

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Pathogenic

0.20

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.74

.;D

Eigen

Uncertain

0.24

Eigen_PC

Benign

0.14

FATHMM_MKL

Benign

0.56

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Pathogenic

0.40

MetaRNN

Pathogenic

0.81

D;D

MetaSVM

Uncertain

0.59

MutationAssessor

Benign

1.9

L;L

PrimateAI

Uncertain

0.62

PROVEAN

Pathogenic

-4.7

D;D

REVEL

Pathogenic

0.72

Sift

Uncertain

0.012

D;D

Polyphen

1.0

D;D

Vest4

0.69

MVP

0.98

MPC

1.2

ClinPred

0.55

GERP RS

2.7

Varity_R

0.27

gMVP

0.59

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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