19-38455445-C-G

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000540.3(RYR1):c.1577-6C>G variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00516 in 1,614,150 control chromosomes in the GnomAD database, including 256 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.024 ( 125 hom., cov: 31)

Exomes 𝑓: 0.0032 ( 131 hom. )

Consequence

RYR1
NM_000540.3 splice_region, intron

Scores

Splicing: ADA: 0.004555

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:13

Conservation

PhyloP100: 0.797

Publications

2 publications found

Variant links:

Genes affected

RYR1 (HGNC:10483): (ryanodine receptor 1) This gene encodes a ryanodine receptor found in skeletal muscle. The encoded protein functions as a calcium release channel in the sarcoplasmic reticulum but also serves to connect the sarcoplasmic reticulum and transverse tubule. Mutations in this gene are associated with malignant hyperthermia susceptibility, central core disease, and minicore myopathy with external ophthalmoplegia. Alternatively spliced transcripts encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

RYR1 Gene-Disease associations (from GenCC):

malignant hyperthermia, susceptibility to, 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Genomics England PanelApp, Ambry Genetics
congenital multicore myopathy with external ophthalmoplegia
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp
RYR1-related myopathy
Inheritance: AR, AD Classification: DEFINITIVE Submitted by: ClinGen
central core myopathy
Inheritance: AD, AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp
King-Denborough syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
malignant hyperthermia of anesthesia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
autosomal recessive centronuclear myopathy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
benign Samaritan congenital myopathy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
congenital myopathy with myasthenic-like onset
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
lethal multiple pterygium syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

RYR1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.77).

BP6

Variant 19-38455445-C-G is Benign according to our data. Variant chr19-38455445-C-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 159838.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0782 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR1	NM_000540.3 link	c.1577-6C>G		splice_region_variant, intron_variant	Intron 14 of 105	ENST00000359596.8	NP_000531.2	P21817-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RYR1	ENST00000359596.8 link	c.1577-6C>G		splice_region_variant, intron_variant	Intron 14 of 105	5	NM_000540.3	ENSP00000352608.2		P21817-1

Frequencies

GnomAD3 genomes

AF:

0.0238

AC:

3623

AN:

152144

Hom.:

124

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0803

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00930

Gnomad ASJ

AF:

0.0216

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00104

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.0222

Gnomad NFE

AF:

0.000514

Gnomad OTH

AF:

0.0167

GnomAD2 exomes

AF:

0.00732

AC:

1840

AN:

251490

AF XY:

0.00561

show subpopulations

Gnomad AFR exome

AF:

0.0831

Gnomad AMR exome

AF:

0.00523

Gnomad ASJ exome

AF:

0.0209

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000580

Gnomad OTH exome

AF:

0.00440

GnomAD4 exome

AF:

0.00321

AC:

4690

AN:

1461888

Hom.:

131

Cov.:

AF XY:

0.00288

AC XY:

2096

AN XY:

727244

show subpopulations

African (AFR)

AF:

0.0874

AC:

2927

AN:

33480

American (AMR)

AF:

0.00555

AC:

248

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0223

AC:

582

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000278

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00728

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000360

AC:

400

AN:

1112012

Other (OTH)

AF:

0.00773

AC:

467

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.489

Heterozygous variant carriers

294

588

882

1176

1470

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

102

204

306

408

510

<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:

0.0239

AC:

3638

AN:

152262

Hom.:

125

Cov.:

AF XY:

0.0235

AC XY:

1748

AN XY:

74456

show subpopulations

African (AFR)

AF:

0.0805

AC:

3341

AN:

41520

American (AMR)

AF:

0.00929

AC:

142

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.0216

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.000622

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.0238

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000514

AC:

AN:

68032

Other (OTH)

AF:

0.0166

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

168

336

504

672

840

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

126

168

210

<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:

0.00355

Hom.:

Bravo

AF:

0.0277

Asia WGS

AF:

0.00751

AC:

AN:

3478

EpiCase

AF:

0.00115

EpiControl

AF:

0.00119

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:13

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

May 23, 2016

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Mar 26, 2018

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Nov 04, 2019

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Feb 08, 2013

Genetic Services Laboratory, University of Chicago

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Malignant hyperthermia, susceptibility to, 1

Benign:2

Mar 05, 2018

Color Diagnostics, LLC DBA Color Health

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Nov 03, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Congenital multicore myopathy with external ophthalmoplegia

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

RYR1-related disorder

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Neuromuscular disease, congenital, with uniform type 1 fiber

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Central core myopathy

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Congenital myopathy with fiber type disproportion;C1840365:King Denborough syndrome;C1850674:Congenital multicore myopathy with external ophthalmoplegia;C2930980:Malignant hyperthermia, susceptibility to, 1;C5830701:Central core myopathy

Benign:1

Aug 20, 2021

Fulgent Genetics, Fulgent Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.77

CADD

Benign

7.4

(source)

DANN

Benign

0.62

PhyloP100

0.80

Mutation Taster

=100/0

polymorphism (auto)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0046

dbscSNV1_RF

Benign

0.22

SpliceAI score (max)

0.080

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