1-237500723-G-T

Variant names:

• chr1-237500723-G-T
• NM_001035.3:c.2216G>T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PM5 PP2 PP3_Moderate

The NM_001035.3(RYR2):​c.2216G>T​(p.Arg739Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,455,274 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R739C) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: RYR2 NM_001035.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.99

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 Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr1-237500723-G-A is described in Lovd as [Pathogenic].
• 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, arrhythmogenic right ventricular cardiomyopathy, catecholaminergic polymorphic ventricular tachycardia 1, arrhythmogenic right ventricular dysplasia 2, catecholaminergic polymorphic ventricular tachycardia.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.865

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR2	NM_001035.3	c.2216G>T	p.Arg739Leu	missense_variant	Exon 21 of 105	ENST00000366574.7	NP_001026.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RYR2	ENST00000366574.7	c.2216G>T	p.Arg739Leu	missense_variant	Exon 21 of 105	1	NM_001035.3	ENSP00000355533.2
RYR2	ENST00000609119.2	n.2216G>T		non_coding_transcript_exon_variant	Exon 21 of 104	5		ENSP00000499659.2
RYR2	ENST00000660292.2	c.2216G>T	p.Arg739Leu	missense_variant	Exon 21 of 106			ENSP00000499787.2
RYR2	ENST00000659194.3	c.2216G>T	p.Arg739Leu	missense_variant	Exon 21 of 105			ENSP00000499653.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1455274 Hom.: 0 Cov.: 31 AF XY: 0.00000277 AC XY: 2 AN XY: 722798

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000233

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.77
BayesDel_addAF	Uncertain	0.042	T
BayesDel_noAF	Benign	-0.18
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.84	D;T
Eigen	Uncertain	0.22
Eigen_PC	Benign	0.20
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.87	D;D
M_CAP	Uncertain	0.20	D
MetaRNN	Pathogenic	0.86	D;D
MetaSVM	Benign	-0.56	T
MutationAssessor	Uncertain	2.8	M;.
PrimateAI	Uncertain	0.70	T
PROVEAN	Pathogenic	-5.7	D;.
REVEL	Uncertain	0.45
Sift	Uncertain	0.0030	D;.
Polyphen		0.82	P;.
Vest4		0.88
MutPred		0.72		Loss of disorder (P = 0.0892);.;
MVP		0.55
MPC		0.54
ClinPred		1.0	D
GERP RS		4.8
Varity_R		0.64
gMVP		0.65

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-237664023;