rs200450676

Positions:

• chr1-237595526-T-A
• chr1-237595526-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_001035.3(RYR2):​c.4465T>A​(p.Cys1489Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C1489R) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: RYR2 NM_001035.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 8.01

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• 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.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RYR2	NM_001035.3	c.4465T>A	p.Cys1489Ser	missense_variant	34/105	ENST00000366574.7	NP_001026.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RYR2	ENST00000366574.7	c.4465T>A	p.Cys1489Ser	missense_variant	34/105	1	NM_001035.3	ENSP00000355533.2
RYR2	ENST00000609119.2	n.4465T>A		non_coding_transcript_exon_variant	34/104	5		ENSP00000499659.2
RYR2	ENST00000660292.2	c.4465T>A	p.Cys1489Ser	missense_variant	34/106			ENSP00000499787.2
RYR2	ENST00000659194.3	c.4465T>A	p.Cys1489Ser	missense_variant	34/105			ENSP00000499653.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.40
BayesDel_addAF	Uncertain	0.053	T
BayesDel_noAF	Benign	-0.16
CADD	Benign	21
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.56	D;T
Eigen	Benign	0.13
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.89	D;D
M_CAP	Benign	0.028	D
MetaRNN	Uncertain	0.67	D;D
MetaSVM	Benign	-0.75	T
MutationAssessor	Uncertain	2.2	M;.
PrimateAI	Uncertain	0.78	T
PROVEAN	Uncertain	-4.1	D;.
REVEL	Uncertain	0.32
Sift	Benign	0.13	T;.
Polyphen		0.0070	B;.
Vest4		0.77
MutPred		0.69		Gain of disorder (P = 0.0017);.;
MVP		0.42
MPC		0.81
ClinPred		0.98	D
GERP RS		5.5
Varity_R		0.38
gMVP		0.64

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.40		Details are displayed if max score is > 0.2
DS_AL_spliceai		0.40		Position offset: -28

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs200450676; hg19: chr1-237758826;