1-237614389-G-C

Position:

chr1-237614389-G-C

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP4BS2

The NM_001035.3(RYR2):c.5261G>C(p.Ser1754Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,461,706 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

RYR2
NM_001035.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:7

Conservation

PhyloP100: 8.12

Variant links:

Genes affected

RYR2 (HGNC:10484): (ryanodine receptor 2) This gene encodes a ryanodine receptor found in cardiac muscle sarcoplasmic reticulum. The encoded protein is one of the components of a calcium channel, composed of a tetramer of the ryanodine receptor proteins and a tetramer of FK506 binding protein 1B proteins, that supplies calcium to cardiac muscle. Mutations in this gene are associated with stress-induced polymorphic ventricular tachycardia and arrhythmogenic right ventricular dysplasia. [provided by RefSeq, Jul 2008]

RYR2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), RYR2. . Gene score misZ 5.7809 (greater than the threshold 3.09). Trascript score misZ 6.4158 (greater than threshold 3.09). GenCC has associacion of gene with hypertrophic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, catecholaminergic polymorphic ventricular tachycardia 1, arrhythmogenic right ventricular dysplasia 2, catecholaminergic polymorphic ventricular tachycardia.

BP4

Computational evidence support a benign effect (MetaRNN=0.3039438).

BS2

High AC in GnomAdExome4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RYR2	NM_001035.3 linkuse as main transcript	c.5261G>C	p.Ser1754Thr	missense_variant	37/105	ENST00000366574.7	NP_001026.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RYR2	ENST00000366574.7 linkuse as main transcript	c.5261G>C	p.Ser1754Thr	missense_variant	37/105	1	NM_001035.3	ENSP00000355533	P1	Q92736-1
RYR2	ENST00000660292.2 linkuse as main transcript	c.5261G>C	p.Ser1754Thr	missense_variant	37/106			ENSP00000499787
RYR2	ENST00000659194.3 linkuse as main transcript	c.5261G>C	p.Ser1754Thr	missense_variant	37/105			ENSP00000499653
RYR2	ENST00000609119.2 linkuse as main transcript	c.5261G>C	p.Ser1754Thr	missense_variant, NMD_transcript_variant	37/104	5		ENSP00000499659

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

248968

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135046

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000869

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1461706

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727132

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000671

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:

0.00000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000827

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

May 22, 2014

The Ser1754Thr variant in RYR2 has not been previously reported in any other fam ilies with cardiomyopathy or in large population studies. Computational predicti on tools and conservation analysis do not provide strong support for or against an impact to the protein. Additional information is needed to fully assess the c linical significance of the Ser1754Thr variant. -

Catecholaminergic polymorphic ventricular tachycardia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

All of Us Research Program, National Institutes of Health

Apr 03, 2023

This missense variant replaces serine with threonine at codon 1754 of the RYR2 protein. Computational prediction tools and conservation analyses are inconclusive regarding the impact of this variant on the protein function. Computational splicing tools suggest that this variant may not impact RNA splicing. To our knowledge, functional assays have not been performed for this variant nor has this variant been reported in individuals affected with cardiovascular disorders in the literature. This variant has been identified in 3/248968 chromosomes in the general population by the Genome Aggregation Database (gnomAD). 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. -

Cardiomyopathy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Mar 09, 2023

This missense variant replaces serine with threonine at codon 1754 of the RYR2 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 been reported in two unrelated individuals affected with dilated cardiomyopathy (PMID: 28416588 and 24503780). This variant has been identified in 3/248968 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. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jan 11, 2024

Identified in patients with DCM in published literature (PMID: 28416588, 27532257, 24503780); at least one patient harbored additional cardiogenetic variants; Not observed at significant frequency in large population cohorts (gnomAD); Not located in one of the three hot-spot regions of the RYR2 gene, where the majority of pathogenic missense variants occur (PMID: 19926015); In silico analysis supports that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 19926015, 28416588, 27532257, 24503780) -

Catecholaminergic polymorphic ventricular tachycardia 1;C1832931:Arrhythmogenic right ventricular dysplasia 2;C5542154:Ventricular arrhythmias due to cardiac ryanodine receptor calcium release deficiency syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Feb 17, 2022

- -

Catecholaminergic polymorphic ventricular tachycardia 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 05, 2023

This sequence change replaces serine, which is neutral and polar, with threonine, which is neutral and polar, at codon 1754 of the RYR2 protein (p.Ser1754Thr). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. 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) performed at Invitae indicates that this missense variant is not expected to disrupt RYR2 protein function. ClinVar contains an entry for this variant (Variation ID: 43804). This missense change has been observed in individual(s) with dilated cardiomyopathy (PMID: 24503780, 27532257, 28416588). This variant is present in population databases (rs397516542, gnomAD 0.009%). -

RYR2-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Mar 29, 2023

The RYR2 c.5261G>C variant is predicted to result in the amino acid substitution p.Ser1754Thr. This variant was reported in three individuals with dilated cardiomyopathy (Table S1, Pugh et al. 2014. PubMed ID: 24503780; Table S1B, Walsh et al. 2017. PubMed ID: 27532257; Table S1, Dal Ferro et al. 2017. PubMed ID: 28416588). However, in one of the individuals, additional variants including a pathogenic LMNA c.949G>A (p.Glu317Lys) were also identified (Table S1, Dal Ferro et al. 2017. PubMed ID: 28416588). This variant is reported in 0.0087% of alleles in individuals of Latino descent in gnomAD (http://gnomad.broadinstitute.org/variant/1-237777689-G-C). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.20

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.36

T;T

Eigen

Uncertain

0.32

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.85

T;T

M_CAP

Benign

0.021

MetaRNN

Benign

0.30

T;T

MetaSVM

Benign

-0.78

MutationAssessor

Benign

1.6

L;.

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.79

PROVEAN

Benign

-0.84

N;.

REVEL

Benign

0.23

Sift

Benign

0.81

T;.

Polyphen

0.96

D;.

Vest4

0.62

MutPred

0.30

Loss of disorder (P = 0.0676);.;

MVP

0.73

MPC

0.61

ClinPred

0.55

GERP RS

5.4

Varity_R

0.22

gMVP

0.63

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