Genetic Variant RYR2:c.3599-9dupT (chr1-237589774-A-AT) – ACMG Classification: Benign (-10 pts)

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP6_ModerateBS1BS2

The NM_001035.3(RYR2):c.3599-9dupT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.00028 ( 0 hom., cov: 0)

Exomes 𝑓: 0.00032 ( 0 hom. )

Consequence

RYR2
NM_001035.3 splice_region, intron

Scores

Not classified

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.467

Publications

2 publications found

Variant links:

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

RYR2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -10 ACMG points.

BP6

Variant 1-237589774-A-AT is Benign according to our data. Variant chr1-237589774-A-AT is described in ClinVar as Benign. ClinVar VariationId is 1534662.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000285 (43/151042) while in subpopulation AFR AF = 0.000901 (37/41056). AF 95% confidence interval is 0.000672. There are 0 homozygotes in GnomAd4. There are 24 alleles in the male GnomAd4 subpopulation. Median coverage is 0. This position passed quality control check.

BS2

High AC in GnomAd4 at 43 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR2	NM_001035.3 link	c.3599-9dupT		splice_region_variant, intron_variant	Intron 29 of 104	ENST00000366574.7	NP_001026.2	Q92736-1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
RYR2	ENST00000366574.7 link	c.3599-19_3599-18insT	intron_variant	Intron 29 of 104	1	NM_001035.3	ENSP00000355533.2	Q92736-1
RYR2	ENST00000661330.2 link	c.3599-19_3599-18insT	intron_variant	Intron 29 of 105			ENSP00000499393.2	A0A590UJF6
RYR2	ENST00000609119.2 link	n.3599-19_3599-18insT	intron_variant	Intron 29 of 103	5		ENSP00000499659.2	A0A590UK06

Frequencies

GnomAD3 genomes

AF:

0.000285

AC:

AN:

150932

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000904

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000660

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000628

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000295

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000489

AC:

108

AN:

221074

AF XY:

0.000528

show subpopulations

Gnomad AFR exome

AF:

0.00201

Gnomad AMR exome

AF:

0.000250

Gnomad ASJ exome

AF:

0.000222

Gnomad EAS exome

AF:

0.000448

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000368

Gnomad OTH exome

AF:

0.000548

GnomAD4 exome

AF:

0.000321

AC:

456

AN:

1422388

Hom.:

Cov.:

AF XY:

0.000338

AC XY:

239

AN XY:

707976

show subpopulations

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

African (AFR)

AF:

0.00131

AC:

AN:

31980

American (AMR)

AF:

0.000230

AC:

AN:

43418

Ashkenazi Jewish (ASJ)

AF:

0.000196

AC:

AN:

25450

East Asian (EAS)

AF:

0.000232

AC:

AN:

38828

South Asian (SAS)

AF:

0.00102

AC:

AN:

83224

European-Finnish (FIN)

AF:

0.0000190

AC:

AN:

52552

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5664

European-Non Finnish (NFE)

AF:

0.000268

AC:

290

AN:

1082450

Other (OTH)

AF:

0.000238

AC:

AN:

58822

⚠️ 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.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.295

Heterozygous variant carriers

117

176

234

293

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000285

AC:

AN:

151042

Hom.:

Cov.:

AF XY:

0.000325

AC XY:

AN XY:

73742

show subpopulations

African (AFR)

AF:

0.000901

AC:

AN:

41056

American (AMR)

AF:

0.0000660

AC:

AN:

15162

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3458

East Asian (EAS)

AF:

0.00

AC:

AN:

5086

South Asian (SAS)

AF:

0.000628

AC:

AN:

4776

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10440

Middle Eastern (MID)

AF:

0.00

AC:

AN:

288

European-Non Finnish (NFE)

AF:

0.0000295

AC:

AN:

67778

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.515

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00213

Hom.:

1497

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Catecholaminergic polymorphic ventricular tachycardia 1

Benign:1

Jan 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.47

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over