rs1553515422

Variant names:

• chr1-237591764-G-A
• rs1553515422
• NM_001035.3:c.4186G>A

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP2

The NM_001035.3(RYR2):​c.4186G>A​(p.Asp1396Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,460,996 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: RYR2 NM_001035.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 8.80
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• arrhythmogenic right ventricular dysplasia 2

  Inheritance: AD Classification: DEFINITIVE, NO_KNOWN Submitted by: Laboratory for Molecular Medicine, Ambry Genetics
• catecholaminergic polymorphic ventricular tachycardia

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen, G2P
• catecholaminergic polymorphic ventricular tachycardia 1

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• hypertrophic cardiomyopathy

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen
• arrhythmogenic right ventricular cardiomyopathy

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the RYR2 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 195 curated pathogenic missense variants (we use a threshold of 10). The gene has 55 curated benign missense variants. Gene score misZ: 5.7809 (above the threshold of 3.09). Trascript score misZ: 6.4158 (above the threshold of 3.09). GenCC associations: The gene is linked to hypertrophic cardiomyopathy, catecholaminergic polymorphic ventricular tachycardia 1, catecholaminergic polymorphic ventricular tachycardia, arrhythmogenic right ventricular dysplasia 2, arrhythmogenic right ventricular cardiomyopathy.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR2	NM_001035.3	c.4186G>A	p.Asp1396Asn	missense_variant	Exon 32 of 105	ENST00000366574.7	NP_001026.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RYR2	ENST00000366574.7	c.4186G>A	p.Asp1396Asn	missense_variant	Exon 32 of 105	1	NM_001035.3	ENSP00000355533.2
RYR2	ENST00000661330.2	c.4186G>A	p.Asp1396Asn	missense_variant	Exon 32 of 106			ENSP00000499393.2
RYR2	ENST00000609119.2	n.4186G>A		non_coding_transcript_exon_variant	Exon 32 of 104	5		ENSP00000499659.2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1460996 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 726726

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44624

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26100

East Asian (EAS) AF: 0.00 AC: 0 AN: 39628

South Asian (SAS) AF: 0.00 AC: 0 AN: 86102

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53346

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1111620

Other (OTH) AF: 0.00 AC: 0 AN: 60338

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

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

Jul 20, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Hypertrophic cardiomyopathy Uncertain:1

Feb 09, 2017

Center for Human Genetics, University of Leuven

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

ACMG score unknown significance -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.27
BayesDel_addAF	Uncertain	0.075	D
BayesDel_noAF	Benign	-0.13
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.40	T;T
Eigen	Uncertain	0.44
Eigen_PC	Uncertain	0.56
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.94	D;D
M_CAP	Pathogenic	0.29	D
MetaRNN	Uncertain	0.46	T;T
MetaSVM	Uncertain	0.53	D
MutationAssessor	Benign	0.20	N;.
PhyloP100		8.8
PrimateAI	Uncertain	0.77	T
PROVEAN	Benign	-1.4	N;.
REVEL	Uncertain	0.42
Sift	Benign	0.53	T;.
Polyphen		0.95	P;.
Vest4		0.77
MutPred		0.17		Gain of MoRF binding (P = 0.0496);.;
MVP		0.86
MPC		0.35
ClinPred		0.84	D
GERP RS		5.5
Varity_R		0.13
gMVP		0.53
Mutation Taster		=43/57	disease causing

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

Other links and lift over

dbSNP: rs1553515422; hg19: chr1-237755064;