chr19-38440793-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 2P and 9B. PM1BP4_StrongBP6BS1

The NM_000540.3(RYR1):c.94C>T(p.Leu32Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000232 in 1,609,174 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 1 hom. )

Consequence

RYR1
NM_000540.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:4

Conservation

PhyloP100: 1.18

Publications

4 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), PanelApp Australia, Genomics England PanelApp, Ambry Genetics, ClinGen
RYR1-related myopathy
Inheritance: AD, AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, PanelApp Australia
congenital multicore myopathy with external ophthalmoplegia
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp
central core myopathy
Inheritance: AD, AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), 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 -7 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 15 uncertain in NM_000540.3

BP4

Computational evidence support a benign effect (MetaRNN=0.017810881).

BP6

Variant 19-38440793-C-T is Benign according to our data. Variant chr19-38440793-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 195083.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00115 (175/152268) while in subpopulation AFR AF = 0.00395 (164/41544). AF 95% confidence interval is 0.00345. There are 0 homozygotes in GnomAd4. There are 85 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000540.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RYR1	NM_000540.3	MANE Select	c.94C>T	p.Leu32Phe	missense	Exon 2 of 106	NP_000531.2	P21817-1
	RYR1	NM_001042723.2		c.94C>T	p.Leu32Phe	missense	Exon 2 of 105	NP_001036188.1	P21817-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
RYR1	ENST00000359596.8	TSL:5 MANE Select	c.94C>T	p.Leu32Phe	missense	Exon 2 of 106	ENSP00000352608.2	P21817-1
RYR1	ENST00000355481.8	TSL:1	c.94C>T	p.Leu32Phe	missense	Exon 2 of 105	ENSP00000347667.3	P21817-2
RYR1	ENST00000594335.6	TSL:1	n.94C>T		non_coding_transcript_exon	Exon 2 of 103	ENSP00000470927.2	M0R014

Frequencies

GnomAD3 genomes

AF:

0.00115

AC:

175

AN:

152150

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00396

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.000248

AC:

AN:

237566

AF XY:

0.000216

show subpopulations

Gnomad AFR exome

AF:

0.00303

Gnomad AMR exome

AF:

0.0000298

Gnomad ASJ exome

AF:

0.000829

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000283

Gnomad OTH exome

AF:

0.000346

GnomAD4 exome

AF:

0.000137

AC:

199

AN:

1456906

Hom.:

Cov.:

AF XY:

0.000101

AC XY:

AN XY:

724536

show subpopulations

African (AFR)

AF:

0.00452

AC:

151

AN:

33442

American (AMR)

AF:

0.0000906

AC:

AN:

44126

Ashkenazi Jewish (ASJ)

AF:

0.000732

AC:

AN:

25970

East Asian (EAS)

AF:

0.00

AC:

AN:

39598

South Asian (SAS)

AF:

0.00

AC:

AN:

85604

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51978

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5320

European-Non Finnish (NFE)

AF:

0.0000108

AC:

AN:

1110718

Other (OTH)

AF:

0.000216

AC:

AN:

60150

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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

GnomAD4 genome

AF:

0.00115

AC:

175

AN:

152268

Hom.:

Cov.:

AF XY:

0.00114

AC XY:

AN XY:

74460

show subpopulations

African (AFR)

AF:

0.00395

AC:

164

AN:

41544

American (AMR)

AF:

0.000392

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.000576

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68022

Other (OTH)

AF:

0.000946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

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:

0.000797

Hom.:

Bravo

AF:

0.00116

ESP6500AA

AF:

0.00273

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000273

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

RYR1-related disorder (2)

Malignant hyperthermia, susceptibility to, 1 (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.14

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.71

Eigen

Uncertain

0.33

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Benign

0.67

LIST_S2

Uncertain

0.95

M_CAP

Pathogenic

0.70

MetaRNN

Benign

0.018

MetaSVM

Uncertain

0.30

MutationAssessor

Benign

1.2

PhyloP100

1.2

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-1.5

REVEL

Uncertain

0.39

Sift

Benign

0.071

Polyphen

0.99

Vest4

0.36

MVP

0.94

MPC

0.95

ClinPred

0.033

GERP RS

3.8

Varity_R

0.13

gMVP

0.30

Mutation Taster

=33/67

disease causing

(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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over