1-237635042-G-C

Variant names:

• chr1-237635042-G-C
• rs41305973
• NM_001035.3:c.6792+50G>C

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 2P and 8B. PM2 BP4_Strong BS1

The NM_001035.3(RYR2):​c.6792+50G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000308 in 1,300,400 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 8.7e-7 (0 hom.)
• Consequence: RYR2 NM_001035.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.369
• Publications: 3 publications found

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 Gene-Disease associations (from GenCC):

• arrhythmogenic right ventricular dysplasia 2

  Inheritance: AD Classification: DEFINITIVE, NO_KNOWN Submitted by: Laboratory for Molecular Medicine, Ambry Genetics
• catecholaminergic polymorphic ventricular tachycardia

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen, G2P
• catecholaminergic polymorphic ventricular tachycardia 1

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• hypertrophic cardiomyopathy

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen
• arrhythmogenic right ventricular cardiomyopathy

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0000197 (3/152014) while in subpopulation AFR AF = 0.0000725 (3/41380). AF 95% confidence interval is 0.0000192. There are 0 homozygotes in GnomAd4. There are 2 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR2	NM_001035.3	c.6792+50G>C		intron_variant	Intron 44 of 104	ENST00000366574.7	NP_001026.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RYR2	ENST00000366574.7	c.6792+50G>C		intron_variant	Intron 44 of 104	1	NM_001035.3	ENSP00000355533.2
RYR2	ENST00000661330.2	c.6792+50G>C		intron_variant	Intron 44 of 105			ENSP00000499393.2
RYR2	ENST00000609119.2	n.6792+50G>C		intron_variant	Intron 44 of 103	5		ENSP00000499659.2

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152014 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000725

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: 0.00

GnomAD2 exomes AF: 0.00000953 AC: 1 AN: 104924 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000370

GnomAD4 exome AF: 8.71e-7 AC: 1 AN: 1148386 Hom.: 0 Cov.: 14 AF XY: 0.00 AC XY: 0 AN XY: 561504

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000392 AC: 1 AN: 25540

American (AMR) AF: 0.00 AC: 0 AN: 19874

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19762

East Asian (EAS) AF: 0.00 AC: 0 AN: 32674

South Asian (SAS) AF: 0.00 AC: 0 AN: 52010

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 45432

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4954

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 899948

Other (OTH) AF: 0.00 AC: 0 AN: 48192

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152014 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74254

African (AFR) AF: 0.0000725 AC: 3 AN: 41380

American (AMR) AF: 0.00 AC: 0 AN: 15252

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10566

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68012

Other (OTH) AF: 0.00 AC: 0 AN: 2086

Alfa AF: 0.00 Hom.: 389

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	0.16
DANN	Benign	0.60
PhyloP100		-0.37

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

Other links and lift over

dbSNP: rs41305973; hg19: chr1-237798342;