rs368028300

Positions:

• chr1-237707140-C-G
• chr1-237707140-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The ENST00000366574.7(RYR2):​c.9772C>G​(p.Pro3258Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000658 in 152,038 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. 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. P3258S) has been classified as Uncertain significance.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: RYR2 ENST00000366574.7 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.32

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 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.
• BP4: Computational evidence support a benign effect (MetaRNN=0.27648416).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RYR2	NM_001035.3	c.9772C>G	p.Pro3258Ala	missense_variant	68/105	ENST00000366574.7	NP_001026.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RYR2	ENST00000366574.7	c.9772C>G	p.Pro3258Ala	missense_variant	68/105	1	NM_001035.3	ENSP00000355533	P1
RYR2	ENST00000660292.2	c.9772C>G	p.Pro3258Ala	missense_variant	68/106			ENSP00000499787
RYR2	ENST00000659194.3	c.9772C>G	p.Pro3258Ala	missense_variant	68/105			ENSP00000499653
RYR2	ENST00000609119.2	c.*807C>G		3_prime_UTR_variant, NMD_transcript_variant	66/104	5		ENSP00000499659

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 152038 Hom.: 0 Cov.: 32

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: 0.00

Gnomad OTH AF: 0.000478

GnomAD4 exome Cov.: 31

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 152038 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74246

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: 0.00

Gnomad4 OTH AF: 0.000478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.069
BayesDel_addAF	Benign	-0.020	T
BayesDel_noAF	Benign	-0.27
CADD	Benign	9.7
DANN	Benign	0.96
DEOGEN2	Pathogenic	0.87	D;T
Eigen	Benign	-0.28
Eigen_PC	Benign	-0.22
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Uncertain	0.88	D;D
M_CAP	Benign	0.024	T
MetaRNN	Benign	0.28	T;T
MetaSVM	Uncertain	-0.10	T
MutationAssessor	Uncertain	2.0	M;.
MutationTaster	Benign	1.0	D
PrimateAI	Benign	0.33	T
PROVEAN	Pathogenic	-6.7	D;.
REVEL	Benign	0.22
Sift	Benign	0.057	T;.
Polyphen		0.083	B;.
Vest4		0.55
MutPred		0.26		Loss of catalytic residue at P3258 (P = 0.011);.;
MVP		0.63
MPC		0.36
ClinPred		0.62	D
GERP RS		5.7
Varity_R		0.10
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: rs368028300; hg19: chr1-237870440; COSMIC: COSV63695843;