1-237454522-A-T

Variant names:

• chr1-237454522-A-T
• NM_001035.3:c.1424A>T

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP2 PP3_Moderate

The NM_001035.3(RYR2):​c.1424A>T​(p.Lys475Ile) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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. K475Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: RYR2 NM_001035.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.22

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 5 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, 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, 0.848

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR2	NM_001035.3	c.1424A>T	p.Lys475Ile	missense_variant	Exon 15 of 105	ENST00000366574.7	NP_001026.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RYR2	ENST00000366574.7	c.1424A>T	p.Lys475Ile	missense_variant	Exon 15 of 105	1	NM_001035.3	ENSP00000355533.2
RYR2	ENST00000609119.2	n.1424A>T		non_coding_transcript_exon_variant	Exon 15 of 104	5		ENSP00000499659.2
RYR2	ENST00000660292.2	c.1424A>T	p.Lys475Ile	missense_variant	Exon 15 of 106			ENSP00000499787.2
RYR2	ENST00000659194.3	c.1424A>T	p.Lys475Ile	missense_variant	Exon 15 of 105			ENSP00000499653.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.83
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.020
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.93	D;D
Eigen	Uncertain	0.46
Eigen_PC	Uncertain	0.46
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.99	D;D
M_CAP	Pathogenic	0.49	D
MetaRNN	Pathogenic	0.85	D;D
MetaSVM	Uncertain	0.59	D
MutationAssessor	Uncertain	2.5	M;.
PrimateAI	Uncertain	0.68	T
PROVEAN	Pathogenic	-6.2	D;.
REVEL	Pathogenic	0.78
Sift	Uncertain	0.0010	D;.
Polyphen		0.77	P;.
Vest4		0.54
MutPred		0.58		Loss of ubiquitination at K475 (P = 0.0027);.;
MVP		0.86
MPC		0.86
ClinPred		0.99	D
GERP RS		4.6
Varity_R		0.76
gMVP		0.71

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: chr1-237617822;