rs370966353

chr19-38473726-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 1P and 3B. PP2 BP4_Moderate BP6

The NM_000540.3(RYR1):c.4115C>T(p.Ala1372Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000237 in 1,543,788 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A1372E) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.00024 (0 hom., cov: 31)
  • Exomes 𝑓: 0.00024 (0 hom.)
• Consequence: RYR1 NM_000540.3 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:12 B:2
• Conservation: PhyloP100: -0.0510

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 Likely_benign. Variant got -2 ACMG points.

• PP2: Missense variant where missense usually causes diseases, RYR1
• BP4: Computational evidence support a benign effect (MetaRNN=0.076971054).
• BP6: Variant 19-38473726-C-T is Benign according to our data. Variant chr19-38473726-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 374135.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=12}. Variant chr19-38473726-C-T is described in Lovd as [Likely_benign].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RYR1	NM_000540.3	c.4115C>T	p.Ala1372Val	missense_variant	28/106	ENST00000359596.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RYR1	ENST00000359596.8	c.4115C>T	p.Ala1372Val	missense_variant	28/106	5	NM_000540.3	A2
RYR1	ENST00000355481.8	c.4115C>T	p.Ala1372Val	missense_variant	28/105	1		P4
RYR1	ENST00000599547.6	c.4115C>T	p.Ala1372Val	missense_variant, NMD_transcript_variant	28/80	2

Frequencies

GnomAD3 genomes AF: 0.000244 AC: 37 AN: 151652 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000485

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000208

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000486

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000221 AC: 31 AN: 139990 Hom.: 0 AF XY: 0.000158 AC XY: 12 AN XY: 75912

Gnomad AFR exome AF: 0.000155

Gnomad AMR exome AF: 0.000299

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000449

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000419

Gnomad OTH exome AF: 0.000246

GnomAD4 exome AF: 0.000236 AC: 329 AN: 1392136 Hom.: 0 Cov.: 33 AF XY: 0.000233 AC XY: 160 AN XY: 686428

Gnomad4 AFR exome AF: 0.0000960

Gnomad4 AMR exome AF: 0.000289

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000633

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000276

Gnomad4 OTH exome AF: 0.000191

GnomAD4 genome AF: 0.000244 AC: 37 AN: 151652 Hom.: 0 Cov.: 31 AF XY: 0.000257 AC XY: 19 AN XY: 74054

Gnomad4 AFR AF: 0.0000485

Gnomad4 AMR AF: 0.0000655

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000208

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000486

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000291 Hom.: 0

Bravo AF: 0.000219

TwinsUK AF: 0.000809 AC: 3

ALSPAC AF: 0.000519 AC: 2

ESP6500AA AF: 0.000320 AC: 1

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.0000669 AC: 5

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:12 Benign:2

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Uncertain:4 Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Apr 13, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Jun 06, 2019	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Sep 22, 2020	In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Uncertain significance, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	May 11, 2016	- -
Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Sep 01, 2019	- -

Malignant hyperthermia, susceptibility to, 1 Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	May 01, 2023	This missense variant replaces alanine with valine at codon 1372 of the RYR1 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with RYR1-related disorders in the literature. This variant has been identified in 36/170906 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Feb 05, 2024	This missense variant replaces alanine with valine at codon 1372 of the RYR1 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with malignant hyperthermia in the literature. This variant has been identified in 36/170906 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

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

Feb 16, 2024

Variant summary: RYR1 c.4115C>T (p.Ala1372Val) results in a non-conservative amino acid change located in the B30.2/SPRY domain (IPR001870) of the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00024 in 1543788 control chromosomes (gnomAD). To our knowledge, no occurrence of c.4115C>T in individuals affected with Myopathy, RYR1-Associated and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 374135). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Congenital multicore myopathy with external ophthalmoplegia Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Central core myopathy Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Congenital myopathy with fiber type disproportion Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Jan 01, 2016

This variant was classified as: Uncertain significance. -

Congenital myasthenic syndrome Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Jan 15, 2015

- -

RYR1-related disorder Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Feb 01, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.067
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.32
Cadd	Benign	5.7
Dann	Benign	0.44
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.068	N
LIST_S2	Benign	0.65	T;T
M_CAP	Uncertain	0.17	D
MetaRNN	Benign	0.077	T;T
MetaSVM	Uncertain	-0.15	T
MutationAssessor	Benign	-1.0	N;N
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Uncertain	0.50	T
PROVEAN	Benign	-0.63	N;N
REVEL	Benign	0.19
Sift	Benign	0.29	T;T
Polyphen		0.13	B;B
Vest4		0.066
MVP		0.74
MPC		0.31
ClinPred		0.011	T
GERP RS		-0.95
Varity_R		0.029
gMVP		0.31

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: rs370966353; hg19: chr19-38964366;