1-237042557-G-T

Variant names:

• chr1-237042557-G-T
• NM_001035.3:c.36G>T

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1 PM2 PP2

The NM_001035.3(RYR2):​c.36G>T​(p.Gln12His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000027 in 1,109,710 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Synonymous variant affecting the same amino acid position (i.e. Q12Q) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: RYR2 NM_001035.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.650

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.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 9 uncertain in NM_001035.3
• 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.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR2	NM_001035.3	c.36G>T	p.Gln12His	missense_variant	Exon 1 of 105	ENST00000366574.7	NP_001026.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RYR2	ENST00000366574.7	c.36G>T	p.Gln12His	missense_variant	Exon 1 of 105	1	NM_001035.3	ENSP00000355533.2
RYR2	ENST00000609119.2	n.36G>T		non_coding_transcript_exon_variant	Exon 1 of 104	5		ENSP00000499659.2
RYR2	ENST00000660292.2	c.36G>T	p.Gln12His	missense_variant	Exon 1 of 106			ENSP00000499787.2
RYR2	ENST00000659194.3	c.36G>T	p.Gln12His	missense_variant	Exon 1 of 105			ENSP00000499653.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000270 AC: 3 AN: 1109710 Hom.: 0 Cov.: 31 AF XY: 0.00000190 AC XY: 1 AN XY: 525762

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000323

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.69
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.030
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Pathogenic	0.84	D
Eigen	Benign	0.18
Eigen_PC	Benign	0.13
FATHMM_MKL	Benign	0.65	D
LIST_S2	Uncertain	0.91	D
M_CAP	Pathogenic	0.98	D
MetaRNN	Uncertain	0.69	D
MetaSVM	Pathogenic	0.85	D
MutationAssessor	Benign	1.7	L
PrimateAI	Uncertain	0.79	T
PROVEAN	Benign	-2.2	N
REVEL	Pathogenic	0.76
Sift	Uncertain	0.017	D
Polyphen		0.98	D
Vest4		0.35
MutPred		0.56		Gain of sheet (P = 0.039);
MVP		0.82
MPC		0.70
ClinPred		0.68	D
GERP RS		2.3
Varity_R		0.35
gMVP		0.21

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: chr1-237205857; COSMIC: COSV99053485;